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GitLab

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<h3>

Eric S. Raymond pushed to branch master

at <a href="https://gitlab.com/NTPsec/ntpsec">NTPsec / ntpsec</a>

</h3>

<h4>

Commits:

</h4>

<ul>

<li>

<strong><a href="https://gitlab.com/NTPsec/ntpsec/commit/943a6b1a472c0ae3efb099ee3bb61a6b0467030a">943a6b1a</a></strong>

<div>

<span>by Eric S. Raymond</span>

<i>at 2017-08-29T15:50:14-04:00</i>

</div>

<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Fix comment glitches.

</pre>

</li>

<li>

<strong><a href="https://gitlab.com/NTPsec/ntpsec/commit/c48ba0f1a21e94b5d0321a433f04c9deb5a6d5b4">c48ba0f1</a></strong>

<div>

<span>by Eric S. Raymond</span>

<i>at 2017-08-29T15:50:14-04:00</i>

</div>

<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">New documentation page om rollover problems

Driver pages about those only emitting 2-digit years now have warnings

attached. More drivers now have eprecation marks for this reason.

</pre>

</li>

</ul>

<h4>14 changed files:</h4>

<ul>

<li class="file-stats">

<a href="#0f868682d7b52af2b0188c10c85a20600b8c7864">

docs/driver_arbiter.txt

</a>

</li>

<li class="file-stats">

<a href="#8ac68dd6c9d43d221ae8ff9008ffb0fc85fa88da">

docs/driver_generic.txt

</a>

</li>

<li class="file-stats">

<a href="#0bd6c56d0e78f54dfd56dc14c9928e1f7e5a6361">

docs/driver_jjy.txt

</a>

</li>

<li class="file-stats">

<a href="#30d863c18d8137384f2effdfc21768a8691f3cac">

docs/driver_modem.txt

</a>

</li>

<li class="file-stats">

<a href="#3a5f68e1276c1afa60ce140401e44bea6b98a462">

docs/driver_neoclock.txt

</a>

</li>

<li class="file-stats">

<a href="#6cd07d197d0d7acb60a2fa32273445f58cd524e2">

docs/driver_oncore.txt

</a>

</li>

<li class="file-stats">

<a href="#88c3bc4ce7300fff2df6eddb288ccc00364b7392">

docs/driver_spectracom.txt

</a>

</li>

<li class="file-stats">

<a href="#f96e255bab650ed460d8f4b652bc3a20b35017df">

docs/driver_trimble.txt

</a>

</li>

<li class="file-stats">

<a href="#060641e932492afc2167f8bc197bd429d10de6f4">

docs/driver_truetime.txt

</a>

</li>

<li class="file-stats">

<a href="#979ab800dfcc1943876ec289874cbd685702ce36">

docs/includes/special.txt

</a>

</li>

<li class="file-stats">

<a href="#8ec5a3b4bb4eeb9f01384aa968f611aafc654f34">

docs/refclock.txt

</a>

</li>

<li class="file-stats">

<a href="#a4b3179f71939609cb86e36fbc402f8f57ac249c">

<span class="new-file">

+

docs/rollover.txt

</span>

</a>

</li>

<li class="file-stats">

<a href="#32e64a7002392c9e63eb88ff539e034049b8c58d">

libparse/README

</a>

</li>

<li class="file-stats">

<a href="#b78eba02f54c555edf3cfc6828cbe1b81c8c2bf0">

libparse/clk_computime.c

</a>

</li>

</ul>

<h4>Changes:</h4>

<li id="0f868682d7b52af2b0188c10c85a20600b8c7864">

<a href="https://gitlab.com/NTPsec/ntpsec/compare/f54d6919c53317b87a233bc64d22a266272d9ae7...c48ba0f1a21e94b5d0321a433f04c9deb5a6d5b4#0f868682d7b52af2b0188c10c85a20600b8c7864"><strong>docs/driver_arbiter.txt</strong></a>

<hr>

<table class="code white" style="font-family: monospace; font-size: 12px;" bgcolor="#fff" width="100%" cellpadding="0" cellspacing="0">

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="15" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="diff-line-num unfold js-unfold new_line" data-linenumber="15" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -15,6 +15,9 @@ This refclock is deprecated and obsolete. The NTPsec maintainers plan</td>

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<td class="diff-line-num old_line" data-linenumber="15" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

15

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15

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<td class="line_content noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;">

<pre style="margin: 0;"> <span id="LC15" class="line" lang="plaintext">to remove it in a future release.  If you have a requirement for it,</span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="16" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

16

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16

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<td class="line_content noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;">

<pre style="margin: 0;"> <span id="LC16" class="line" lang="plaintext">please make this known to us.</span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="17" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

17

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<td class="diff-line-num new_line" data-linenumber="17" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

17

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<td class="line_content noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;">

<pre style="margin: 0;"> <span id="LC17" class="line" lang="plaintext"></span>

</pre>

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<tr class="line_holder new" id="" style="line-height: 1.6;">

<td class="diff-line-num new old_line" data-linenumber="18" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<td class="diff-line-num new new_line" data-linenumber="18" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

18

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<td class="line_content new noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC18" class="line" lang="plaintext">This driver reports only two-digit years, and may thus be subject to</span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="18" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

</td>

<td class="diff-line-num new new_line" data-linenumber="19" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

19

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<td class="line_content new noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC19" class="line" lang="plaintext">both lingering Y2K effects and issues near future century rollovers.</span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="18" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<td class="diff-line-num new new_line" data-linenumber="20" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

20

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<td class="line_content new noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC20" class="line" lang="plaintext"></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="18" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

18

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<td class="diff-line-num new_line" data-linenumber="21" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<td class="line_content noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;">

<pre style="margin: 0;"> <span id="LC21" class="line" lang="plaintext">== Description ==</span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="19" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

19

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<td class="diff-line-num new_line" data-linenumber="22" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

22

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<td class="line_content noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;">

<pre style="margin: 0;"> <span id="LC22" class="line" lang="plaintext"></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="20" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

20

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<td class="diff-line-num new_line" data-linenumber="23" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<td class="line_content noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;">

<pre style="margin: 0;"> <span id="LC23" class="line" lang="plaintext">This driver supports the Arbiter 1088A/B Satellite Controlled Clock. The</span>

</pre>

</td>

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</table>

<br>

</li>

<li id="8ac68dd6c9d43d221ae8ff9008ffb0fc85fa88da">

<a href="https://gitlab.com/NTPsec/ntpsec/compare/f54d6919c53317b87a233bc64d22a266272d9ae7...c48ba0f1a21e94b5d0321a433f04c9deb5a6d5b4#8ac68dd6c9d43d221ae8ff9008ffb0fc85fa88da"><strong>docs/driver_generic.txt</strong></a>

<hr>

<table class="code white" style="font-family: monospace; font-size: 12px;" bgcolor="#fff" width="100%" cellpadding="0" cellspacing="0">

<tr class="line_holder match" id="" style="line-height: 1.6;">

<td class="diff-line-num unfold js-unfold old_line" data-linenumber="19" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="diff-line-num unfold js-unfold new_line" data-linenumber="19" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -19,8 +19,10 @@ types/configurations by plugging type-specific packet-parsing</td>

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19

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<td class="diff-line-num new_line" data-linenumber="19" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<td class="line_content noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;">

<pre style="margin: 0;"> <span id="LC19" class="line" lang="plaintext">routine into a generic drive framework.</span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="20" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<td class="diff-line-num new_line" data-linenumber="20" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

20

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<td class="line_content noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;">

<pre style="margin: 0;"> <span id="LC20" class="line" lang="plaintext"></span>

</pre>

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<tr class="line_holder" id="" style="line-height: 1.6;">

<td class="diff-line-num old_line" data-linenumber="21" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<td class="diff-line-num new_line" data-linenumber="21" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<td class="line_content noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;">

<pre style="margin: 0;"> <span id="LC21" class="line" lang="plaintext">Note that some of these subtypes below are to support equipment that</span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="22" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<td class="diff-line-num new_line old" data-linenumber="22" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC22" class="line" lang="plaintext">has not been commercially available for a long time, and may be</span>

</pre>

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23

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<td class="diff-line-num new_line old" data-linenumber="22" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<td class="line_content noteable_line old" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#fbe9eb">

<pre style="margin: 0;">-<span id="LC23" class="line" lang="plaintext">removed in a future release.  See</span>

</pre>

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22

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<td class="line_content new noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC22" class="line" lang="plaintext">has not been commercially available for a long time, report only</span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="24" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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23

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<td class="line_content new noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC23" class="line" lang="plaintext">2-digit years (thus being subject to lingering Y2K problems and</span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="24" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

24

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<pre style="margin: 0;">+<span id="LC24" class="line" lang="plaintext">possible fture issues near century boundaries). and may be removed in</span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="24" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<td class="diff-line-num new new_line" data-linenumber="25" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<td class="line_content new noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC25" class="line" lang="plaintext">a future release.  See</span>

</pre>

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<td class="diff-line-num new_line" data-linenumber="26" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

26

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<pre style="margin: 0;"> <span id="LC26" class="line" lang="plaintext">https://www.ntpsec.org/removal-plan.html[Feature removals] for a</span>

</pre>

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25

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<pre style="margin: 0;"> <span id="LC27" class="line" lang="plaintext">discussion of this issue.</span>

</pre>

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26

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<td class="diff-line-num new_line" data-linenumber="28" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

28

</td>

<td class="line_content noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;">

<pre style="margin: 0;"> <span id="LC28" class="line" lang="plaintext"></span>

</pre>

</td>

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</table>

<br>

</li>

<li id="0bd6c56d0e78f54dfd56dc14c9928e1f7e5a6361">

<a href="https://gitlab.com/NTPsec/ntpsec/compare/f54d6919c53317b87a233bc64d22a266272d9ae7...c48ba0f1a21e94b5d0321a433f04c9deb5a6d5b4#0bd6c56d0e78f54dfd56dc14c9928e1f7e5a6361"><strong>docs/driver_jjy.txt</strong></a>

<hr>

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<td class="diff-line-num unfold js-unfold new_line" data-linenumber="9" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -9,6 +9,10 @@ Serial Port: +/dev/jjyu+; See corresponding receiver</td>

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<td class="line_content noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;">

<pre style="margin: 0;"> <span id="LC9" class="line" lang="plaintext"></span>

</pre>

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10

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<td class="line_content noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;">

<pre style="margin: 0;"> <span id="LC10" class="line" lang="plaintext">== Description ==</span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="11" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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11

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<td class="line_content noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;">

<pre style="margin: 0;"> <span id="LC11" class="line" lang="plaintext"></span>

</pre>

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<pre style="margin: 0;">+<span id="LC12" class="line" lang="plaintext">Warning: some modes of this driver report only two-digit years, and</span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="12" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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13

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<td class="line_content new noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC13" class="line" lang="plaintext">may thus be subject to both lingering Y2K effects and problems near</span>

</pre>

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<pre style="margin: 0;">+<span id="LC14" class="line" lang="plaintext">future century rollovers.</span>

</pre>

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15

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<pre style="margin: 0;">+<span id="LC15" class="line" lang="plaintext"></span>

</pre>

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12

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<pre style="margin: 0;"> <span id="LC16" class="line" lang="plaintext">This driver supports the following the JJY receivers and the GPS clock</span>

</pre>

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13

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<td class="diff-line-num new_line" data-linenumber="17" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<td class="line_content noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;">

<pre style="margin: 0;"> <span id="LC17" class="line" lang="plaintext">sold in Japan, and the time service through a telephone line.</span>

</pre>

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14

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18

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<td class="line_content noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;">

<pre style="margin: 0;"> <span id="LC18" class="line" lang="plaintext"></span>

</pre>

</td>

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</table>

<br>

</li>

<li id="30d863c18d8137384f2effdfc21768a8691f3cac">

<a href="https://gitlab.com/NTPsec/ntpsec/compare/f54d6919c53317b87a233bc64d22a266272d9ae7...c48ba0f1a21e94b5d0321a433f04c9deb5a6d5b4#30d863c18d8137384f2effdfc21768a8691f3cac"><strong>docs/driver_modem.txt</strong></a>

<hr>

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<td class="diff-line-num unfold js-unfold new_line" data-linenumber="11" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -11,6 +11,10 @@ Requires: a dial-out device.</td>

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11

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<pre style="margin: 0;"> <span id="LC11" class="line" lang="plaintext"></span>

</pre>

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12

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<td class="line_content noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;">

<pre style="margin: 0;"> <span id="LC12" class="line" lang="plaintext">== Description ==</span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="13" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

13

</td>

<td class="diff-line-num new_line" data-linenumber="13" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

13

</td>

<td class="line_content noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;">

<pre style="margin: 0;"> <span id="LC13" class="line" lang="plaintext"></span>

</pre>

</td>

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<td class="diff-line-num new old_line" data-linenumber="14" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

</td>

<td class="diff-line-num new new_line" data-linenumber="14" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

14

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<td class="line_content new noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC14" class="line" lang="plaintext">Warning: the ACTS mode of this driver reports only two-digit years,</span>

</pre>

</td>

</tr>

<tr class="line_holder new" id="" style="line-height: 1.6;">

<td class="diff-line-num new old_line" data-linenumber="14" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

</td>

<td class="diff-line-num new new_line" data-linenumber="15" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

15

</td>

<td class="line_content new noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC15" class="line" lang="plaintext">and may thus be subject to both lingering Y2K effects and problems</span>

</pre>

</td>

</tr>

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<td class="diff-line-num new old_line" data-linenumber="14" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

</td>

<td class="diff-line-num new new_line" data-linenumber="16" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

16

</td>

<td class="line_content new noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC16" class="line" lang="plaintext">near future century rollovers.</span>

</pre>

</td>

</tr>

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<td class="diff-line-num new old_line" data-linenumber="14" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

</td>

<td class="diff-line-num new new_line" data-linenumber="17" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

17

</td>

<td class="line_content new noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC17" class="line" lang="plaintext"></span>

</pre>

</td>

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<td class="diff-line-num old_line" data-linenumber="14" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

14

</td>

<td class="diff-line-num new_line" data-linenumber="18" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

18

</td>

<td class="line_content noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;">

<pre style="margin: 0;"> <span id="LC18" class="line" lang="plaintext">This driver supports the US (NIST and USNO) and European (PTB (Germany),</span>

</pre>

</td>

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<td class="diff-line-num old_line" data-linenumber="15" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

15

</td>

<td class="diff-line-num new_line" data-linenumber="19" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

19

</td>

<td class="line_content noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;">

<pre style="margin: 0;"> <span id="LC19" class="line" lang="plaintext">NPL (UK), etc.) modem time services, as well as Spectracom GPS receivers</span>

</pre>

</td>

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<td class="diff-line-num old_line" data-linenumber="16" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

16

</td>

<td class="diff-line-num new_line" data-linenumber="20" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

20

</td>

<td class="line_content noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;">

<pre style="margin: 0;"> <span id="LC20" class="line" lang="plaintext">connected via a modem. The driver periodically dials a number from a</span>

</pre>

</td>

</tr>

</table>

<br>

</li>

<li id="3a5f68e1276c1afa60ce140401e44bea6b98a462">

<a href="https://gitlab.com/NTPsec/ntpsec/compare/f54d6919c53317b87a233bc64d22a266272d9ae7...c48ba0f1a21e94b5d0321a433f04c9deb5a6d5b4#3a5f68e1276c1afa60ce140401e44bea6b98a462"><strong>docs/driver_neoclock.txt</strong></a>

<hr>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="11" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="diff-line-num unfold js-unfold new_line" data-linenumber="11" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -11,6 +11,10 @@ image:pic/neoclock4x.gif[float="right",link="http://www.linum.com"]</td>

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<td class="diff-line-num old_line" data-linenumber="11" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

11

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<td class="diff-line-num new_line" data-linenumber="11" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

11

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<td class="line_content noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;">

<pre style="margin: 0;"> <span id="LC11" class="line" lang="plaintext"></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="12" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

12

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<td class="diff-line-num new_line" data-linenumber="12" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

12

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<td class="line_content noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;">

<pre style="margin: 0;"> <span id="LC12" class="line" lang="plaintext">== Description ==</span>

</pre>

</td>

</tr>

<tr class="line_holder" id="" style="line-height: 1.6;">

<td class="diff-line-num old_line" data-linenumber="13" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

13

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<td class="diff-line-num new_line" data-linenumber="13" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

13

</td>

<td class="line_content noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;">

<pre style="margin: 0;"> <span id="LC13" class="line" lang="plaintext"></span>

</pre>

</td>

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<tr class="line_holder new" id="" style="line-height: 1.6;">

<td class="diff-line-num new old_line" data-linenumber="14" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

</td>

<td class="diff-line-num new new_line" data-linenumber="14" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

14

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<td class="line_content new noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC14" class="line" lang="plaintext">Warning: the ACTS mode of this driver reports only two-digit years,</span>

</pre>

</td>

</tr>

<tr class="line_holder new" id="" style="line-height: 1.6;">

<td class="diff-line-num new old_line" data-linenumber="14" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

</td>

<td class="diff-line-num new new_line" data-linenumber="15" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

15

</td>

<td class="line_content new noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC15" class="line" lang="plaintext">and may thus be subject to both lingering Y2K effects and problems</span>

</pre>

</td>

</tr>

<tr class="line_holder new" id="" style="line-height: 1.6;">

<td class="diff-line-num new old_line" data-linenumber="14" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

</td>

<td class="diff-line-num new new_line" data-linenumber="16" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

16

</td>

<td class="line_content new noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC16" class="line" lang="plaintext">near future century rollovers.</span>

</pre>

</td>

</tr>

<tr class="line_holder new" id="" style="line-height: 1.6;">

<td class="diff-line-num new old_line" data-linenumber="14" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

</td>

<td class="diff-line-num new new_line" data-linenumber="17" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

17

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<td class="line_content new noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC17" class="line" lang="plaintext"></span>

</pre>

</td>

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<tr class="line_holder" id="" style="line-height: 1.6;">

<td class="diff-line-num old_line" data-linenumber="14" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

14

</td>

<td class="diff-line-num new_line" data-linenumber="18" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

18

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<td class="line_content noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;">

<pre style="margin: 0;"> <span id="LC18" class="line" lang="plaintext">The refclock_neoclock4x driver supports the NeoClock4X receiver</span>

</pre>

</td>

</tr>

<tr class="line_holder" id="" style="line-height: 1.6;">

<td class="diff-line-num old_line" data-linenumber="15" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

15

</td>

<td class="diff-line-num new_line" data-linenumber="19" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

19

</td>

<td class="line_content noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;">

<pre style="margin: 0;"> <span id="LC19" class="line" lang="plaintext">available from http://www.linum.com[Linum Software GmbH]. The receiver</span>

</pre>

</td>

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<tr class="line_holder" id="" style="line-height: 1.6;">

<td class="diff-line-num old_line" data-linenumber="16" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

16

</td>

<td class="diff-line-num new_line" data-linenumber="20" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

20

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<td class="line_content noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;">

<pre style="margin: 0;"> <span id="LC20" class="line" lang="plaintext">is available as a http://www.dcf77.de[DCF77] or TDF receiver. Both</span>

</pre>

</td>

</tr>

</table>

<br>

</li>

<li id="6cd07d197d0d7acb60a2fa32273445f58cd524e2">

<a href="https://gitlab.com/NTPsec/ntpsec/compare/f54d6919c53317b87a233bc64d22a266272d9ae7...c48ba0f1a21e94b5d0321a433f04c9deb5a6d5b4#6cd07d197d0d7acb60a2fa32273445f58cd524e2"><strong>docs/driver_oncore.txt</strong></a>

<hr>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="15" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="diff-line-num unfold js-unfold new_line" data-linenumber="15" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -15,6 +15,9 @@ been end-of-lifed. The NTPsec maintainers plan to remove it in a</td>

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15

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<td class="diff-line-num new_line" data-linenumber="15" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

15

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<td class="line_content noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;">

<pre style="margin: 0;"> <span id="LC15" class="line" lang="plaintext">future release.  If you have a requirement for it, please make this</span>

</pre>

</td>

</tr>

<tr class="line_holder" id="" style="line-height: 1.6;">

<td class="diff-line-num old_line" data-linenumber="16" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

16

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<td class="diff-line-num new_line" data-linenumber="16" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

16

</td>

<td class="line_content noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;">

<pre style="margin: 0;"> <span id="LC16" class="line" lang="plaintext">known to us.</span>

</pre>

</td>

</tr>

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<td class="diff-line-num old_line" data-linenumber="17" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

17

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<td class="diff-line-num new_line" data-linenumber="17" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

17

</td>

<td class="line_content noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;">

<pre style="margin: 0;"> <span id="LC17" class="line" lang="plaintext"></span>

</pre>

</td>

</tr>

<tr class="line_holder new" id="" style="line-height: 1.6;">

<td class="diff-line-num new old_line" data-linenumber="18" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

</td>

<td class="diff-line-num new new_line" data-linenumber="18" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

18

</td>

<td class="line_content new noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC18" class="line" lang="plaintext">This driver reports only two-digit years, and may thus be subject to</span>

</pre>

</td>

</tr>

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<td class="diff-line-num new old_line" data-linenumber="18" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

</td>

<td class="diff-line-num new new_line" data-linenumber="19" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

19

</td>

<td class="line_content new noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC19" class="line" lang="plaintext">both lingering Y2K effects and issues near future century rollovers.</span>

</pre>

</td>

</tr>

<tr class="line_holder new" id="" style="line-height: 1.6;">

<td class="diff-line-num new old_line" data-linenumber="18" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

</td>

<td class="diff-line-num new new_line" data-linenumber="20" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

20

</td>

<td class="line_content new noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC20" class="line" lang="plaintext"></span>

</pre>

</td>

</tr>

<tr class="line_holder" id="" style="line-height: 1.6;">

<td class="diff-line-num old_line" data-linenumber="18" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

18

</td>

<td class="diff-line-num new_line" data-linenumber="21" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

21

</td>

<td class="line_content noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;">

<pre style="margin: 0;"> <span id="LC21" class="line" lang="plaintext">== Description ==</span>

</pre>

</td>

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<td class="diff-line-num old_line" data-linenumber="19" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

19

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<td class="diff-line-num new_line" data-linenumber="22" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

22

</td>

<td class="line_content noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;">

<pre style="margin: 0;"> <span id="LC22" class="line" lang="plaintext"></span>

</pre>

</td>

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<tr class="line_holder" id="" style="line-height: 1.6;">

<td class="diff-line-num old_line" data-linenumber="20" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

20

</td>

<td class="diff-line-num new_line" data-linenumber="23" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

23

</td>

<td class="line_content noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;">

<pre style="margin: 0;"> <span id="LC23" class="line" lang="plaintext">This driver supports most models of the</span>

</pre>

</td>

</tr>

</table>

<br>

</li>

<li id="88c3bc4ce7300fff2df6eddb288ccc00364b7392">

<a href="https://gitlab.com/NTPsec/ntpsec/compare/f54d6919c53317b87a233bc64d22a266272d9ae7...c48ba0f1a21e94b5d0321a433f04c9deb5a6d5b4#88c3bc4ce7300fff2df6eddb288ccc00364b7392"><strong>docs/driver_spectracom.txt</strong></a>

<hr>

<table class="code white" style="font-family: monospace; font-size: 12px;" bgcolor="#fff" width="100%" cellpadding="0" cellspacing="0">

<tr class="line_holder match" id="" style="line-height: 1.6;">

<td class="diff-line-num unfold js-unfold old_line" data-linenumber="9" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="diff-line-num unfold js-unfold new_line" data-linenumber="9" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -9,6 +9,15 @@ Serial Port: +/dev/spectracom+'u'; 9600bps 8N1</td>

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<td class="diff-line-num old_line" data-linenumber="9" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

9

</td>

<td class="diff-line-num new_line" data-linenumber="9" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

9

</td>

<td class="line_content noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;">

<pre style="margin: 0;"> <span id="LC9" class="line" lang="plaintext">Features: Optional PPS signal processing, +tty_clk+</span>

</pre>

</td>

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<td class="diff-line-num old_line" data-linenumber="10" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

10

</td>

<td class="diff-line-num new_line" data-linenumber="10" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

10

</td>

<td class="line_content noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;">

<pre style="margin: 0;"> <span id="LC10" class="line" lang="plaintext">Requires: Optional PPS signal processing requires the PPSAPI signal interface.</span>

</pre>

</td>

</tr>

<tr class="line_holder" id="" style="line-height: 1.6;">

<td class="diff-line-num old_line" data-linenumber="11" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

11

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<td class="diff-line-num new_line" data-linenumber="11" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

11

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<td class="line_content noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;">

<pre style="margin: 0;"> <span id="LC11" class="line" lang="plaintext"></span>

</pre>

</td>

</tr>

<tr class="line_holder new" id="" style="line-height: 1.6;">

<td class="diff-line-num new old_line" data-linenumber="12" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

</td>

<td class="diff-line-num new new_line" data-linenumber="12" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

12

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<td class="line_content new noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC12" class="line" lang="plaintext">== Deprecation warning ==</span>

</pre>

</td>

</tr>

<tr class="line_holder new" id="" style="line-height: 1.6;">

<td class="diff-line-num new old_line" data-linenumber="12" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

</td>

<td class="diff-line-num new new_line" data-linenumber="13" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

13

</td>

<td class="line_content new noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC13" class="line" lang="plaintext"></span>

</pre>

</td>

</tr>

<tr class="line_holder new" id="" style="line-height: 1.6;">

<td class="diff-line-num new old_line" data-linenumber="12" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

</td>

<td class="diff-line-num new new_line" data-linenumber="14" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

14

</td>

<td class="line_content new noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC14" class="line" lang="plaintext">This refclock is deprecated and obsolete. The NTPsec maintainers plan</span>

</pre>

</td>

</tr>

<tr class="line_holder new" id="" style="line-height: 1.6;">

<td class="diff-line-num new old_line" data-linenumber="12" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

</td>

<td class="diff-line-num new new_line" data-linenumber="15" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

15

</td>

<td class="line_content new noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC15" class="line" lang="plaintext">to remove it in a future release.  If you have a requirement for it,</span>

</pre>

</td>

</tr>

<tr class="line_holder new" id="" style="line-height: 1.6;">

<td class="diff-line-num new old_line" data-linenumber="12" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

</td>

<td class="diff-line-num new new_line" data-linenumber="16" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

16

</td>

<td class="line_content new noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC16" class="line" lang="plaintext">please make this known to us.</span>

</pre>

</td>

</tr>

<tr class="line_holder new" id="" style="line-height: 1.6;">

<td class="diff-line-num new old_line" data-linenumber="12" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

</td>

<td class="diff-line-num new new_line" data-linenumber="17" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

17

</td>

<td class="line_content new noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC17" class="line" lang="plaintext"></span>

</pre>

</td>

</tr>

<tr class="line_holder new" id="" style="line-height: 1.6;">

<td class="diff-line-num new old_line" data-linenumber="12" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

</td>

<td class="diff-line-num new new_line" data-linenumber="18" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

18

</td>

<td class="line_content new noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC18" class="line" lang="plaintext">This driver reports only two-digit years, and may thus be subject to</span>

</pre>

</td>

</tr>

<tr class="line_holder new" id="" style="line-height: 1.6;">

<td class="diff-line-num new old_line" data-linenumber="12" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

</td>

<td class="diff-line-num new new_line" data-linenumber="19" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

19

</td>

<td class="line_content new noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC19" class="line" lang="plaintext">both lingering Y2K effects and issues near future century rollovers.</span>

</pre>

</td>

</tr>

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</td>

<td class="diff-line-num new new_line" data-linenumber="20" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

20

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<td class="line_content new noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC20" class="line" lang="plaintext"></span>

</pre>

</td>

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<td class="diff-line-num old_line" data-linenumber="12" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

12

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<td class="diff-line-num new_line" data-linenumber="21" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

21

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<td class="line_content noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;">

<pre style="margin: 0;"> <span id="LC21" class="line" lang="plaintext">== Description ==</span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="13" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

13

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<td class="diff-line-num new_line" data-linenumber="22" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

22

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<td class="line_content noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;">

<pre style="margin: 0;"> <span id="LC22" class="line" lang="plaintext"></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="14" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

14

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<td class="diff-line-num new_line" data-linenumber="23" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

23

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<td class="line_content noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;">

<pre style="margin: 0;"> <span id="LC23" class="line" lang="plaintext">This driver supports the "Type 2" format emitted by Spectracom time</span>

</pre>

</td>

</tr>

</table>

<br>

</li>

<li id="f96e255bab650ed460d8f4b652bc3a20b35017df">

<a href="https://gitlab.com/NTPsec/ntpsec/compare/f54d6919c53317b87a233bc64d22a266272d9ae7...c48ba0f1a21e94b5d0321a433f04c9deb5a6d5b4#f96e255bab650ed460d8f4b652bc3a20b35017df"><strong>docs/driver_trimble.txt</strong></a>

<hr>

<table class="code white" style="font-family: monospace; font-size: 12px;" bgcolor="#fff" width="100%" cellpadding="0" cellspacing="0">

<tr class="line_holder match" id="" style="line-height: 1.6;">

<td class="diff-line-num unfold js-unfold old_line" data-linenumber="11" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="diff-line-num unfold js-unfold new_line" data-linenumber="11" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -11,6 +11,15 @@ Name: trimble</td>

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<td class="diff-line-num old_line" data-linenumber="11" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

11

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<td class="diff-line-num new_line" data-linenumber="11" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

11

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<td class="line_content noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;">

<pre style="margin: 0;"> <span id="LC11" class="line" lang="plaintext">Reference ID: GPS</span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="12" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

12

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<td class="diff-line-num new_line" data-linenumber="12" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

12

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<td class="line_content noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;">

<pre style="margin: 0;"> <span id="LC12" class="line" lang="plaintext">Serial Port: /dev/trimble__u__; 9600bps 8N1/8O1</span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="13" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

13

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<td class="diff-line-num new_line" data-linenumber="13" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

13

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<td class="line_content noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;">

<pre style="margin: 0;"> <span id="LC13" class="line" lang="plaintext"></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="14" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

</td>

<td class="diff-line-num new new_line" data-linenumber="14" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

14

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<td class="line_content new noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC14" class="line" lang="plaintext">== Deprecation warning ==</span>

</pre>

</td>

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<td class="diff-line-num new old_line" data-linenumber="14" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<td class="diff-line-num new new_line" data-linenumber="15" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

15

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<td class="line_content new noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC15" class="line" lang="plaintext"></span>

</pre>

</td>

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<td class="diff-line-num new old_line" data-linenumber="14" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

</td>

<td class="diff-line-num new new_line" data-linenumber="16" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

16

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<td class="line_content new noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC16" class="line" lang="plaintext">This refclock is deprecated and obsolete. The NTPsec maintainers plan</span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="14" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<td class="diff-line-num new new_line" data-linenumber="17" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

17

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<td class="line_content new noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC17" class="line" lang="plaintext">to remove it in a future release.  If you have a requirement for it,</span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="14" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<td class="diff-line-num new new_line" data-linenumber="18" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

18

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<td class="line_content new noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC18" class="line" lang="plaintext">please make this known to us.</span>

</pre>

</td>

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<td class="diff-line-num new old_line" data-linenumber="14" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

</td>

<td class="diff-line-num new new_line" data-linenumber="19" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

19

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<td class="line_content new noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC19" class="line" lang="plaintext"></span>

</pre>

</td>

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<tr class="line_holder new" id="" style="line-height: 1.6;">

<td class="diff-line-num new old_line" data-linenumber="14" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

</td>

<td class="diff-line-num new new_line" data-linenumber="20" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

20

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<td class="line_content new noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC20" class="line" lang="plaintext">This driver reports only two-digit years, and may thus be subject to</span>

</pre>

</td>

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<td class="diff-line-num new old_line" data-linenumber="14" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

</td>

<td class="diff-line-num new new_line" data-linenumber="21" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

21

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<td class="line_content new noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC21" class="line" lang="plaintext">both lingering Y2K effects and issues near future century rollovers.</span>

</pre>

</td>

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<td class="diff-line-num new old_line" data-linenumber="14" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<td class="diff-line-num new new_line" data-linenumber="22" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

22

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<td class="line_content new noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC22" class="line" lang="plaintext"></span>

</pre>

</td>

</tr>

<tr class="line_holder" id="" style="line-height: 1.6;">

<td class="diff-line-num old_line" data-linenumber="14" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

14

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<td class="diff-line-num new_line" data-linenumber="23" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

23

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<pre style="margin: 0;"> <span id="LC23" class="line" lang="plaintext">== Description ==</span>

</pre>

</td>

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<td class="diff-line-num old_line" data-linenumber="15" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

15

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<td class="diff-line-num new_line" data-linenumber="24" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

24

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<td class="line_content noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;">

<pre style="margin: 0;"> <span id="LC24" class="line" lang="plaintext"></span>

</pre>

</td>

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<td class="diff-line-num old_line" data-linenumber="16" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

16

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<td class="diff-line-num new_line" data-linenumber="25" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

25

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<td class="line_content noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;">

<pre style="margin: 0;"> <span id="LC25" class="line" lang="plaintext">The *refclock trimble* driver supports</span>

</pre>

</td>

</tr>

</table>

<br>

</li>

<li id="060641e932492afc2167f8bc197bd429d10de6f4">

<a href="https://gitlab.com/NTPsec/ntpsec/compare/f54d6919c53317b87a233bc64d22a266272d9ae7...c48ba0f1a21e94b5d0321a433f04c9deb5a6d5b4#060641e932492afc2167f8bc197bd429d10de6f4"><strong>docs/driver_truetime.txt</strong></a>

<hr>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="14" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="diff-line-num unfold js-unfold new_line" data-linenumber="14" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -14,6 +14,9 @@ This refclock is deprecated and obsolete. The NTPsec maintainers plan</td>

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<td class="line_content noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;">

<pre style="margin: 0;"> <span id="LC14" class="line" lang="plaintext">to remove it in a future release.  If you have a requirement for it,</span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="15" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<pre style="margin: 0;"> <span id="LC15" class="line" lang="plaintext">please make this known to us.</span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="16" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<pre style="margin: 0;"> <span id="LC16" class="line" lang="plaintext"></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="17" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<td class="diff-line-num new new_line" data-linenumber="17" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<td class="line_content new noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC17" class="line" lang="plaintext">This driver reports only two-digit years, and may thus be subject to</span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="17" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<td class="diff-line-num new new_line" data-linenumber="18" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<pre style="margin: 0;">+<span id="LC18" class="line" lang="plaintext">both lingering Y2K effects and issues near future century rollovers.</span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="17" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<pre style="margin: 0;">+<span id="LC19" class="line" lang="plaintext"></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="17" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<pre style="margin: 0;"> <span id="LC20" class="line" lang="plaintext">== Description ==</span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="18" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<td class="diff-line-num new_line" data-linenumber="21" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<pre style="margin: 0;"> <span id="LC21" class="line" lang="plaintext"></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="19" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<pre style="margin: 0;"> <span id="LC22" class="line" lang="plaintext">This driver supports several models models of Kinemetrics/TrueTime</span>

</pre>

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<br>

</li>

<li id="979ab800dfcc1943876ec289874cbd685702ce36">

<a href="https://gitlab.com/NTPsec/ntpsec/compare/f54d6919c53317b87a233bc64d22a266272d9ae7...c48ba0f1a21e94b5d0321a433f04c9deb5a6d5b4#979ab800dfcc1943876ec289874cbd685702ce36"><strong>docs/includes/special.txt</strong></a>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="11" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="diff-line-num unfold js-unfold new_line" data-linenumber="11" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -11,4 +11,5 @@</td>

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<pre style="margin: 0;"> <span id="LC11" class="line" lang="plaintext">* link:clock.html[Clock State Machine]</span>

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<td class="diff-line-num old_line" data-linenumber="12" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<pre style="margin: 0;"> <span id="LC12" class="line" lang="plaintext">* link:leap.html[Leap Second Processing]</span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="13" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<pre style="margin: 0;"> <span id="LC13" class="line" lang="plaintext">* link:leapsmear.html[Leap Smearing]</span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="14" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<td class="diff-line-num new new_line" data-linenumber="14" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<pre style="margin: 0;">+<span id="LC14" class="line" lang="plaintext">* link:rollover.html[Rollover issues in time sources]</span>

</pre>

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<td class="diff-line-num new_line" data-linenumber="15" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<pre style="margin: 0;"> <span id="LC15" class="line" lang="plaintext"></span></pre>

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<br>

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<li id="8ec5a3b4bb4eeb9f01384aa968f611aafc654f34">

<a href="https://gitlab.com/NTPsec/ntpsec/compare/f54d6919c53317b87a233bc64d22a266272d9ae7...c48ba0f1a21e94b5d0321a433f04c9deb5a6d5b4#8ec5a3b4bb4eeb9f01384aa968f611aafc654f34"><strong>docs/refclock.txt</strong></a>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="162" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="diff-line-num unfold js-unfold new_line" data-linenumber="162" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -162,21 +162,21 @@ the 6021 in the generic parse driver.</td>

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<pre style="margin: 0;"> <span id="LC162" class="line" lang="plaintext">|====================================================================</span>

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<pre style="margin: 0;"> <span id="LC163" class="line" lang="plaintext">| Name                                  | Flags | Driver</span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="164" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<pre style="margin: 0;"> <span id="LC164" class="line" lang="plaintext">|link:driver_local.html[local]          | - | Undisciplined Local Clock</span>

</pre>

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<pre style="margin: 0;">-<span id="LC165" class="line" lang="plaintext">|link:driver_spectracom.html[spectracom]| <span class="idiff left right">-</span> | Generic Spectracom Receivers</span>

</pre>

</td>

</tr>

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<td class="diff-line-num new new_line" data-linenumber="165" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<pre style="margin: 0;">+<span id="LC165" class="line" lang="plaintext">|link:driver_spectracom.html[spectracom]| <span class="idiff left right">D</span> | Generic Spectracom Receivers</span>

</pre>

</td>

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<td class="diff-line-num old_line" data-linenumber="166" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

166

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<td class="diff-line-num new_line" data-linenumber="166" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

166

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<pre style="margin: 0;"> <span id="LC166" class="line" lang="plaintext">|link:driver_truetime.html[truetime]    | D | TrueTime GPS/GOES Receivers</span>

</pre>

</td>

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<td class="diff-line-num old_line" data-linenumber="167" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

167

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<td class="diff-line-num new_line" data-linenumber="167" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

167

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<pre style="margin: 0;"> <span id="LC167" class="line" lang="plaintext">|link:driver_generic.html[generic]      | T | Generic Reference Driver (Parse)</span>

</pre>

</td>

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<td class="diff-line-num old_line" data-linenumber="168" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<td class="diff-line-num new_line" data-linenumber="168" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

168

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<pre style="margin: 0;"> <span id="LC168" class="line" lang="plaintext">|link:driver_magnavox.html[magnavox]    | D | MX4200 and compatible GPS receivers</span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="169" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<td class="diff-line-num new_line old" data-linenumber="169" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC169" class="line" lang="plaintext">|link:driver_arbiter.html[arbiter]      | <span class="idiff left right">-</span> | Arbiter 1088A/B GPS Receiver</span>

</pre>

</td>

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<td class="diff-line-num new old_line" data-linenumber="170" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<td class="diff-line-num new new_line" data-linenumber="169" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<pre style="margin: 0;">+<span id="LC169" class="line" lang="plaintext">|link:driver_arbiter.html[arbiter]      | <span class="idiff left right">D</span> | Arbiter 1088A/B GPS Receiver</span>

</pre>

</td>

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<td class="diff-line-num old_line" data-linenumber="170" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

170

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170

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<pre style="margin: 0;"> <span id="LC170" class="line" lang="plaintext">|link:driver_modem.html[modem]          | - | NIST/USNO/PTB Modem Time Services</span>

</pre>

</td>

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<td class="diff-line-num old_line" data-linenumber="171" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

171

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<td class="diff-line-num new_line" data-linenumber="171" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

171

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<pre style="margin: 0;"> <span id="LC171" class="line" lang="plaintext">|link:driver_nmea.html[nmea]            | T | Generic NMEA GPS Receiver</span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="172" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<td class="diff-line-num new_line" data-linenumber="172" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

172

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<pre style="margin: 0;"> <span id="LC172" class="line" lang="plaintext">|link:driver_pps.html[pps]              | T | PPS Clock Discipline</span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="173" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

173

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<td class="diff-line-num new_line" data-linenumber="173" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

173

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<pre style="margin: 0;"> <span id="LC173" class="line" lang="plaintext">|link:driver_hpgps.html[hpgps]          | T | Hewlett Packard GPS Receivers</span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="174" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

174

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<td class="diff-line-num new_line" data-linenumber="174" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

174

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<pre style="margin: 0;"> <span id="LC174" class="line" lang="plaintext">|link:driver_shm.html[shm]              | T | Shared Memory Driver</span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="175" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<td class="diff-line-num new_line old" data-linenumber="175" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC175" class="line" lang="plaintext">|link:driver_trimble.html[trimble]      | <span class="idiff left right">T</span> | Trimble Palisade/Thunderbolt/Acutime GPSes</span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="176" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<td class="diff-line-num new new_line" data-linenumber="175" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

175

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<pre style="margin: 0;">+<span id="LC175" class="line" lang="plaintext">|link:driver_trimble.html[trimble]      | <span class="idiff left right">D</span> | Trimble Palisade/Thunderbolt/Acutime GPSes</span>

</pre>

</td>

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<td class="diff-line-num old_line" data-linenumber="176" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<td class="diff-line-num new_line" data-linenumber="176" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<pre style="margin: 0;"> <span id="LC176" class="line" lang="plaintext">|link:driver_oncore.html[oncore]        | D | Motorola UT Oncore GPS</span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="177" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

177

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<td class="diff-line-num new_line" data-linenumber="177" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

177

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<pre style="margin: 0;"> <span id="LC177" class="line" lang="plaintext">|link:driver_jjy.html[jjy]              | T | JJY Receivers</span>

</pre>

</td>

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<td class="diff-line-num old_line" data-linenumber="178" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<td class="diff-line-num new_line" data-linenumber="178" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

178

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<pre style="margin: 0;"> <span id="LC178" class="line" lang="plaintext">|link:driver_zyfer.html[zyfer]          | - | Zyfer GPStarplus Receiver</span>

</pre>

</td>

</tr>

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<td class="diff-line-num old old_line" data-linenumber="179" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<td class="diff-line-num new_line old" data-linenumber="179" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC179" class="line" lang="plaintext">|link:driver_neoclock.html[neoclock]    | <span class="idiff left right">-</span> | NeoClock4X DCF77 / TDF Receiver</span>

</pre>

</td>

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<td class="diff-line-num new old_line" data-linenumber="180" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<td class="diff-line-num new new_line" data-linenumber="179" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<pre style="margin: 0;">+<span id="LC179" class="line" lang="plaintext">|link:driver_neoclock.html[neoclock]    | <span class="idiff left right">D</span> | NeoClock4X DCF77 / TDF Receiver</span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="180" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<pre style="margin: 0;"> <span id="LC180" class="line" lang="plaintext">|link:driver_gpsd.html[gpsd]            | T | GPSD client protocol</span>

</pre>

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<pre style="margin: 0;"> <span id="LC181" class="line" lang="plaintext">|==========================================================================</span>

</pre>

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182

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182

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<pre style="margin: 0;"> <span id="LC182" class="line" lang="plaintext"></span>

</pre>

</td>

</tr>

</table>

<br>

</li>

<li id="a4b3179f71939609cb86e36fbc402f8f57ac249c">

<a href="https://gitlab.com/NTPsec/ntpsec/compare/f54d6919c53317b87a233bc64d22a266272d9ae7...c48ba0f1a21e94b5d0321a433f04c9deb5a6d5b4#a4b3179f71939609cb86e36fbc402f8f57ac249c"><strong>docs/rollover.txt</strong></a>

<hr>

<table class="code white" style="font-family: monospace; font-size: 12px;" bgcolor="#fff" width="100%" cellpadding="0" cellspacing="0">

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<td class="diff-line-num new old_line" data-linenumber="0" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

</td>

<td class="diff-line-num new new_line" data-linenumber="1" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

1

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<td class="line_content new noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC1" class="line" lang="plaintext">= Rollover issues ib time sources =</span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="0" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<td class="diff-line-num new new_line" data-linenumber="2" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

2

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<td class="line_content new noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC2" class="line" lang="plaintext"></span>

</pre>

</td>

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<td class="diff-line-num new old_line" data-linenumber="0" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<td class="diff-line-num new new_line" data-linenumber="3" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

3

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<pre style="margin: 0;">+<span id="LC3" class="line" lang="plaintext">'''''</span>

</pre>

</td>

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<td class="diff-line-num new old_line" data-linenumber="0" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

</td>

<td class="diff-line-num new new_line" data-linenumber="4" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

4

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<td class="line_content new noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC4" class="line" lang="plaintext"></span>

</pre>

</td>

</tr>

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<td class="diff-line-num new old_line" data-linenumber="0" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<td class="diff-line-num new new_line" data-linenumber="5" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

5

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<td class="line_content new noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC5" class="line" lang="plaintext">== Table of Contents ==</span>

</pre>

</td>

</tr>

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<td class="diff-line-num new old_line" data-linenumber="0" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<td class="diff-line-num new new_line" data-linenumber="6" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

6

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<td class="line_content new noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC6" class="line" lang="plaintext"></span>

</pre>

</td>

</tr>

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<td class="diff-line-num new old_line" data-linenumber="0" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

</td>

<td class="diff-line-num new new_line" data-linenumber="7" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

7

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<td class="line_content new noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC7" class="line" lang="plaintext">* link:#intro[Introduction]</span>

</pre>

</td>

</tr>

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<td class="diff-line-num new old_line" data-linenumber="0" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

</td>

<td class="diff-line-num new new_line" data-linenumber="8" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

8

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<pre style="margin: 0;">+<span id="LC8" class="line" lang="plaintext">* link:#terminology[Terminology]</span>

</pre>

</td>

</tr>

<tr class="line_holder new" id="" style="line-height: 1.6;">

<td class="diff-line-num new old_line" data-linenumber="0" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

</td>

<td class="diff-line-num new new_line" data-linenumber="9" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

9

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<td class="line_content new noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC9" class="line" lang="plaintext">* link:#cycles[Major cycles of interest]</span>

</pre>

</td>

</tr>

<tr class="line_holder new" id="" style="line-height: 1.6;">

<td class="diff-line-num new old_line" data-linenumber="0" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

</td>

<td class="diff-line-num new new_line" data-linenumber="10" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

10

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<td class="line_content new noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC10" class="line" lang="plaintext">* link:#gps_pivots[GPS pivot dates]</span>

</pre>

</td>

</tr>

<tr class="line_holder new" id="" style="line-height: 1.6;">

<td class="diff-line-num new old_line" data-linenumber="0" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

</td>

<td class="diff-line-num new new_line" data-linenumber="11" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

11

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<td class="line_content new noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC11" class="line" lang="plaintext">* link:#mtp_pivots[NTP pivot dates]</span>

</pre>

</td>

</tr>

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<td class="diff-line-num new old_line" data-linenumber="0" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

</td>

<td class="diff-line-num new new_line" data-linenumber="12" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

12

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<td class="line_content new noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC12" class="line" lang="plaintext"></span>

</pre>

</td>

</tr>

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<td class="diff-line-num new old_line" data-linenumber="0" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

</td>

<td class="diff-line-num new new_line" data-linenumber="13" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

13

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<td class="line_content new noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC13" class="line" lang="plaintext">[[intro]]</span>

</pre>

</td>

</tr>

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<td class="diff-line-num new old_line" data-linenumber="0" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

</td>

<td class="diff-line-num new new_line" data-linenumber="14" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

14

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<td class="line_content new noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC14" class="line" lang="plaintext">== Introduction ==</span>

</pre>

</td>

</tr>

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<td class="diff-line-num new old_line" data-linenumber="0" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

</td>

<td class="diff-line-num new new_line" data-linenumber="15" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

15

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<td class="line_content new noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC15" class="line" lang="plaintext"></span>

</pre>

</td>

</tr>

<tr class="line_holder new" id="" style="line-height: 1.6;">

<td class="diff-line-num new old_line" data-linenumber="0" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

</td>

<td class="diff-line-num new new_line" data-linenumber="16" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

16

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<td class="line_content new noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC16" class="line" lang="plaintext">All time-handling software and hardware suffers from a fundamental</span>

</pre>

</td>

</tr>

<tr class="line_holder new" id="" style="line-height: 1.6;">

<td class="diff-line-num new old_line" data-linenumber="0" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

</td>

<td class="diff-line-num new new_line" data-linenumber="17" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

17

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<td class="line_content new noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC17" class="line" lang="plaintext">problem: finite-sized data representations for times means that,</span>

</pre>

</td>

</tr>

<tr class="line_holder new" id="" style="line-height: 1.6;">

<td class="diff-line-num new old_line" data-linenumber="0" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

</td>

<td class="diff-line-num new new_line" data-linenumber="18" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

18

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<td class="line_content new noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC18" class="line" lang="plaintext">sooner or later, your time counter is going to roll over to zero. If</span>

</pre>

</td>

</tr>

<tr class="line_holder new" id="" style="line-height: 1.6;">

<td class="diff-line-num new old_line" data-linenumber="0" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

</td>

<td class="diff-line-num new new_line" data-linenumber="19" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

19

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<td class="line_content new noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC19" class="line" lang="plaintext">you are lucky, the space you have to represent time is large enough</span>

</pre>

</td>

</tr>

<tr class="line_holder new" id="" style="line-height: 1.6;">

<td class="diff-line-num new old_line" data-linenumber="0" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

</td>

<td class="diff-line-num new new_line" data-linenumber="20" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

20

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<pre style="margin: 0;">+<span id="LC20" class="line" lang="plaintext">that you can expect not to observe a rollover during the expected</span>

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<pre style="margin: 0;">+<span id="LC21" class="line" lang="plaintext">lifetime of the universe (or whatever portion of it concerns you).</span>

</pre>

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<pre style="margin: 0;">+<span id="LC22" class="line" lang="plaintext">On real-world hardware you will seldom be that lucky.</span>

</pre>

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<pre style="margin: 0;">+<span id="LC23" class="line" lang="plaintext"></span>

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<pre style="margin: 0;">+<span id="LC24" class="line" lang="plaintext">This page discusses calendar cycles related to NTP, the ways they</span>

</pre>

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<pre style="margin: 0;">+<span id="LC25" class="line" lang="plaintext">interact, the consequences of rollover, and common workarounds for</span>

</pre>

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<pre style="margin: 0;">+<span id="LC26" class="line" lang="plaintext">rollover problems.</span>

</pre>

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<pre style="margin: 0;">+<span id="LC27" class="line" lang="plaintext"></span>

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<pre style="margin: 0;">+<span id="LC28" class="line" lang="plaintext">[[terminology]]</span>

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<pre style="margin: 0;">+<span id="LC29" class="line" lang="plaintext">== Terminology ==</span>

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<pre style="margin: 0;">+<span id="LC30" class="line" lang="plaintext"></span>

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<pre style="margin: 0;">+<span id="LC31" class="line" lang="plaintext">Every calendar cycle has at least three basic properties: a start date</span>

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<pre style="margin: 0;">+<span id="LC32" class="line" lang="plaintext">(usually referred to a solar astronomical date in the Gregorian</span>

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<pre style="margin: 0;">+<span id="LC33" class="line" lang="plaintext">calendar), a unit (such as seconds) and a rollover time or cycle</span>

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<pre style="margin: 0;">+<span id="LC34" class="line" lang="plaintext">length in that unit.  It also matters what the calendar does about</span>

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<pre style="margin: 0;">+<span id="LC35" class="line" lang="plaintext">leap seconds.</span>

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<pre style="margin: 0;">+<span id="LC36" class="line" lang="plaintext"></span>

</pre>

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<pre style="margin: 0;">+<span id="LC37" class="line" lang="plaintext">As an important example, the basic time representation used on</span>

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<pre style="margin: 0;">+<span id="LC38" class="line" lang="plaintext">computers running Unix has a start date of 1970-01-01T00:00:00</span>

</pre>

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<pre style="margin: 0;">+<span id="LC39" class="line" lang="plaintext">(midnight of Janary 1st 1970), a unit of seconds, and a rollover time</span>

</pre>

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<pre style="margin: 0;">+<span id="LC40" class="line" lang="plaintext">of either 2^31^ seconds or 2^63^ seconds, depending on the word size</span>

</pre>

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<pre style="margin: 0;">+<span id="LC41" class="line" lang="plaintext">of the hardware. Negative times represent seconds before the start</span>

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<pre style="margin: 0;">+<span id="LC42" class="line" lang="plaintext">date.</span>

</pre>

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<pre style="margin: 0;">+<span id="LC43" class="line" lang="plaintext"></span>

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<pre style="margin: 0;">+<span id="LC44" class="line" lang="plaintext">The start date is often called the "epoch", and a rollover period may</span>

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<pre style="margin: 0;">+<span id="LC45" class="line" lang="plaintext">be called an "era". Beware that eras are often numbered zero-origin;</span>

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<pre style="margin: 0;">+<span id="LC46" class="line" lang="plaintext">it is likely that Unix software will refer to dates immediately before</span>

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<pre style="margin: 0;">+<span id="LC47" class="line" lang="plaintext">the 2038 rollover as "era 0", not "era 1".</span>

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<pre style="margin: 0;">+<span id="LC48" class="line" lang="plaintext"></span>

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<pre style="margin: 0;">+<span id="LC49" class="line" lang="plaintext">Rollover problems arise when a counter wraps to zero, so that a system</span>

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<pre style="margin: 0;">+<span id="LC50" class="line" lang="plaintext">behaves or reports as though time has warped into the far past. The</span>

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<pre style="margin: 0;">+<span id="LC51" class="line" lang="plaintext">consequences can range from trivial to catastrophic; time-dependent</span>

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<pre style="margin: 0;">+<span id="LC52" class="line" lang="plaintext">software enters previously unexplored regions of its behavior space</span>

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<pre style="margin: 0;">+<span id="LC53" class="line" lang="plaintext">and may crash or deliver nonsensical results.  Because these edge</span>

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<pre style="margin: 0;">+<span id="LC54" class="line" lang="plaintext">cases are difficult to test, they are defect attractors even when</span>

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<pre style="margin: 0;">+<span id="LC55" class="line" lang="plaintext">system designers have been careful and conscientious.</span>

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<pre style="margin: 0;">+<span id="LC56" class="line" lang="plaintext"></span>

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<pre style="margin: 0;">+<span id="LC57" class="line" lang="plaintext">[[cycles]]</span>

</pre>

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<pre style="margin: 0;">+<span id="LC58" class="line" lang="plaintext">== Major cycles of interest ==</span>

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<pre style="margin: 0;">+<span id="LC59" class="line" lang="plaintext"></span>

</pre>

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<pre style="margin: 0;">+<span id="LC60" class="line" lang="plaintext">For purposes related to NTP there are four major cyclic calendars of</span>

</pre>

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<pre style="margin: 0;">+<span id="LC61" class="line" lang="plaintext">interest: two-digit years, Unix time, NTP time, GPS time (because GPSes</span>

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<pre style="margin: 0;">+<span id="LC62" class="line" lang="plaintext">are so often used as primary time sources).</span>

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<pre style="margin: 0;">+<span id="LC63" class="line" lang="plaintext"></span>

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<pre style="margin: 0;">+<span id="LC64" class="line" lang="plaintext">=== Two-digit year reports ===</span>

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65

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<pre style="margin: 0;">+<span id="LC65" class="line" lang="plaintext"></span>

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66

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<pre style="margin: 0;">+<span id="LC66" class="line" lang="plaintext">A well-known historical rollover problem was "Y2K", which derived from</span>

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<pre style="margin: 0;">+<span id="LC67" class="line" lang="plaintext">the use of two-digit decimal year counters in mainframe software</span>

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<pre style="margin: 0;">+<span id="LC68" class="line" lang="plaintext">(written when storage was so extensive that longer counters would have</span>

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<pre style="margin: 0;">+<span id="LC69" class="line" lang="plaintext">been dramatically more expensive). Expensive preparation and</span>

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<pre style="margin: 0;">+<span id="LC70" class="line" lang="plaintext">mitigation work prevented any major disasters in the year 2000, but</span>

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<pre style="margin: 0;">+<span id="LC71" class="line" lang="plaintext">this was in part because there were many fewer vulnerable systems than</span>

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<pre style="margin: 0;">+<span id="LC72" class="line" lang="plaintext">there later became.</span>

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<pre style="margin: 0;">+<span id="LC73" class="line" lang="plaintext"></span>

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<pre style="margin: 0;">+<span id="LC74" class="line" lang="plaintext">Alas, Y2K-like problems are not dead.  Some will persist as long</span>

</pre>

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<pre style="margin: 0;">+<span id="LC75" class="line" lang="plaintext">as bad old time-source hardware that only reports two-digit years</span>

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<pre style="margin: 0;">+<span id="LC76" class="line" lang="plaintext">is in service.</span>

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<pre style="margin: 0;">+<span id="LC77" class="line" lang="plaintext"></span>

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<pre style="margin: 0;">+<span id="LC78" class="line" lang="plaintext">Many GPSes have this problem due to NMEA0183's inadequacies as a</span>

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<pre style="margin: 0;">+<span id="LC79" class="line" lang="plaintext">reporting format (and analogous problems in various proprietary GPS</span>

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<pre style="margin: 0;">+<span id="LC80" class="line" lang="plaintext">protocols). Unless the device ships a particular $GZDA sentence</span>

</pre>

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<pre style="margin: 0;">+<span id="LC81" class="line" lang="plaintext">(which many do not) the year parts of time stamps are the low two</span>

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<pre style="margin: 0;">+<span id="LC82" class="line" lang="plaintext">digits only.</span>

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<pre style="margin: 0;">+<span id="LC83" class="line" lang="plaintext"></span>

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<pre style="margin: 0;">+<span id="LC84" class="line" lang="plaintext">Dedicated non-GPS reference-clock hardware designed in the 20th</span>

</pre>

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<pre style="margin: 0;">+<span id="LC85" class="line" lang="plaintext">century frequently also reports only two-digit year dates - for</span>

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<pre style="margin: 0;">+<span id="LC86" class="line" lang="plaintext">example, the Arbiter and Spectracom devices supported by this</span>

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<pre style="margin: 0;">+<span id="LC87" class="line" lang="plaintext">distribution.  This problem may persist in post-2000 devices that</span>

</pre>

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<pre style="margin: 0;">+<span id="LC88" class="line" lang="plaintext">are designed for compatility to use the same reporting protocols,</span>

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<pre style="margin: 0;">+<span id="LC89" class="line" lang="plaintext">such as Spectracom's "Type 2".</span>

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<pre style="margin: 0;">+<span id="LC90" class="line" lang="plaintext"></span>

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<pre style="margin: 0;">+<span id="LC91" class="line" lang="plaintext">For any device with a two-digit year report, Y2K-like hilarity can</span>

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<pre style="margin: 0;">+<span id="LC92" class="line" lang="plaintext">ensue near any century boundary.  There is an internal workaround, in</span>

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<pre style="margin: 0;">+<span id="LC93" class="line" lang="plaintext">{ntpdman}, but prudent time admimistrators should be aware that such</span>

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<pre style="margin: 0;">+<span id="LC94" class="line" lang="plaintext">workarounds are defect attractors and monitor such hardware carefully,</span>

</pre>

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<pre style="margin: 0;">+<span id="LC95" class="line" lang="plaintext">especially near century boundaries. Warnings have been attached to the</span>

</pre>

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<pre style="margin: 0;">+<span id="LC96" class="line" lang="plaintext">documentation of NTP clock drivers that may have a vulnerability here.</span>

</pre>

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<pre style="margin: 0;">+<span id="LC97" class="line" lang="plaintext"></span>

</pre>

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<pre style="margin: 0;">+<span id="LC98" class="line" lang="plaintext">=== Unix time ===</span>

</pre>

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<pre style="margin: 0;">+<span id="LC99" class="line" lang="plaintext"></span>

</pre>

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<pre style="margin: 0;">+<span id="LC100" class="line" lang="plaintext">The basics of Unix time have already been described. </span>

</pre>

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<pre style="margin: 0;">+<span id="LC101" class="line" lang="plaintext"></span>

</pre>

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<pre style="margin: 0;">+<span id="LC102" class="line" lang="plaintext">32-bit Unix time will roll over at 2038-01-19T03:14:08, beginning its</span>

</pre>

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<pre style="margin: 0;">+<span id="LC103" class="line" lang="plaintext">second era.  It will not roll over to zero but rather to the minimum</span>

</pre>

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<pre style="margin: 0;">+<span id="LC104" class="line" lang="plaintext">*negative* Unix time, which will report as 1901-12-13T20:45:52.</span>

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105

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<pre style="margin: 0;">+<span id="LC105" class="line" lang="plaintext"></span>

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<td class="diff-line-num new new_line" data-linenumber="106" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

106

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<pre style="margin: 0;">+<span id="LC106" class="line" lang="plaintext">Unix time is leap-second-corrected. When a leap second is inserted,</span>

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<td class="diff-line-num new new_line" data-linenumber="107" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

107

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<pre style="margin: 0;">+<span id="LC107" class="line" lang="plaintext">the Unix counter stutters - increases during the leap second, then</span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="108" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

108

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<pre style="margin: 0;">+<span id="LC108" class="line" lang="plaintext">drops back a second so that the same counter value represents two</span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="109" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

109

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<pre style="margin: 0;">+<span id="LC109" class="line" lang="plaintext">distinct times.  If a leap second were to be deleted, the counter</span>

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110

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<pre style="margin: 0;">+<span id="LC110" class="line" lang="plaintext">would skip that second.</span>

</pre>

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<pre style="margin: 0;">+<span id="LC111" class="line" lang="plaintext"></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="112" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<pre style="margin: 0;">+<span id="LC112" class="line" lang="plaintext">Thw possibility of stutter or skip also means that in order to compute</span>

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<td class="diff-line-num new new_line" data-linenumber="113" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<pre style="margin: 0;">+<span id="LC113" class="line" lang="plaintext">elapsed time in seconds between two Unix times, you need to know</span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="114" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

114

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<pre style="margin: 0;">+<span id="LC114" class="line" lang="plaintext">the leap-second offset at each time.  It is not guaranteed that</span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="115" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<pre style="margin: 0;">+<span id="LC115" class="line" lang="plaintext">these offsets are the same if the interval crosses midnight  at the</span>

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<pre style="margin: 0;">+<span id="LC116" class="line" lang="plaintext">end of any calendar month. To date in 2017,  IERS (the International</span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="117" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<pre style="margin: 0;">+<span id="LC117" class="line" lang="plaintext">Earth Rotation service) has performed all corrections just after</span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="118" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<pre style="margin: 0;">+<span id="LC118" class="line" lang="plaintext">midnight of June 31 and December 31 respectively.</span>

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<pre style="margin: 0;">+<span id="LC119" class="line" lang="plaintext"></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="120" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<pre style="margin: 0;">+<span id="LC120" class="line" lang="plaintext">The purpose of leap-second correction is to keep Unix time</span>

</pre>

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<pre style="margin: 0;">+<span id="LC121" class="line" lang="plaintext">synchronized to the solar calendar.  With it, Unix time after</span>

</pre>

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<pre style="margin: 0;">+<span id="LC122" class="line" lang="plaintext">1972-01-01T00:00:00 (the start date of UTC, Universal Coordinated</span>

</pre>

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<pre style="margin: 0;">+<span id="LC123" class="line" lang="plaintext">Time) coincides with UTC.  Unix time before 1972 was an approximation</span>

</pre>

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<pre style="margin: 0;">+<span id="LC124" class="line" lang="plaintext">of GMT (Greenwich Mean Time) without leap seconds.</span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="125" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

125

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<pre style="margin: 0;">+<span id="LC125" class="line" lang="plaintext"></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="126" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

126

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<pre style="margin: 0;">+<span id="LC126" class="line" lang="plaintext">On POSIX-compliant Unix systems (which is now effecively all) Unix</span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="127" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

127

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<pre style="margin: 0;">+<span id="LC127" class="line" lang="plaintext">time can be retrieved with nanosecond precision; some older versions</span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="128" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

128

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<pre style="margin: 0;">+<span id="LC128" class="line" lang="plaintext">supported only millisecond precision.  The subseconds counter is not</span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="129" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

129

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<pre style="margin: 0;">+<span id="LC129" class="line" lang="plaintext">involved in any of the rollover or leap-second issues thith the</span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="130" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

130

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<pre style="margin: 0;">+<span id="LC130" class="line" lang="plaintext">seconds counter.</span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="131" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

131

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<pre style="margin: 0;">+<span id="LC131" class="line" lang="plaintext"></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="132" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<pre style="margin: 0;">+<span id="LC132" class="line" lang="plaintext">The Unix 32-bit rollover may fizzle the way Y2K did, and will if a</span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="133" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<pre style="margin: 0;">+<span id="LC133" class="line" lang="plaintext">large enough percentage of 32-bit computers are replaced with 64-bit</span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="134" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<pre style="margin: 0;">+<span id="LC134" class="line" lang="plaintext">systems (the time counters on those won't roll over for approximately</span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="135" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<pre style="margin: 0;">+<span id="LC135" class="line" lang="plaintext">292 billion years, which is twenty times the lifetime of the universe</span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="136" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<pre style="margin: 0;">+<span id="LC136" class="line" lang="plaintext">so far).  There is, however, reason for worry; various Unix</span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="137" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<pre style="margin: 0;">+<span id="LC137" class="line" lang="plaintext">filesystems, binary file formats, and databases even on 64-bit systems</span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="138" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<pre style="margin: 0;">+<span id="LC138" class="line" lang="plaintext">use 32-bit fields.  A more serious worry is embedded 32-bit hardware</span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="139" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<pre style="margin: 0;">+<span id="LC139" class="line" lang="plaintext">quietly ticking away in life-critical systems everywhere from medical</span>

</pre>

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<pre style="margin: 0;">+<span id="LC140" class="line" lang="plaintext">devices to avionics.</span>

</pre>

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<pre style="margin: 0;">+<span id="LC141" class="line" lang="plaintext"></span>

</pre>

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<pre style="margin: 0;">+<span id="LC142" class="line" lang="plaintext">=== NTP time ===</span>

</pre>

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<pre style="margin: 0;">+<span id="LC143" class="line" lang="plaintext"></span>

</pre>

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<pre style="margin: 0;">+<span id="LC144" class="line" lang="plaintext">NTP time has a 32-bit cycle with an epoch of 1900-01-01T00:00:00.  NTP</span>

</pre>

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<pre style="margin: 0;">+<span id="LC145" class="line" lang="plaintext">time is unsigned; the cycle is thus twice that from a signed 32-bit</span>

</pre>

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<pre style="margin: 0;">+<span id="LC146" class="line" lang="plaintext">counter and the era 1 rollover will be on 2036-01-08.  A detailed</span>

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<pre style="margin: 0;">+<span id="LC147" class="line" lang="plaintext">discussion can be found at</span>

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<pre style="margin: 0;">+<span id="LC148" class="line" lang="plaintext">https://www.eecis.udel.edu/~mills/y2k.html[The NTP Era and Era</span>

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<pre style="margin: 0;">+<span id="LC149" class="line" lang="plaintext">Numbering]. NTP time has a subsecond part in units of 2^-32^</span>

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<pre style="margin: 0;">+<span id="LC150" class="line" lang="plaintext">seconds, which does not participate in the seconds counter's rollover</span>

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<pre style="margin: 0;">+<span id="LC151" class="line" lang="plaintext">problems.</span>

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<pre style="margin: 0;">+<span id="LC152" class="line" lang="plaintext"></span>

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<pre style="margin: 0;">+<span id="LC153" class="line" lang="plaintext">NTP time is leap-second corrected, and the reference implementation</span>

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<pre style="margin: 0;">+<span id="LC154" class="line" lang="plaintext">may exhibit stutter or skip.  There is a controversial technique</span>

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<pre style="margin: 0;">+<span id="LC155" class="line" lang="plaintext">called https://developers.google.com/time/smear["leap smearing"] used</span>

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<pre style="margin: 0;">+<span id="LC156" class="line" lang="plaintext">by some servers that avoids these by changing the length of the issued</span>

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<pre style="margin: 0;">+<span id="LC157" class="line" lang="plaintext">second slightly near scheduled corrections.</span>

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<pre style="margin: 0;">+<span id="LC158" class="line" lang="plaintext"></span>

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<pre style="margin: 0;">+<span id="LC159" class="line" lang="plaintext">=== GPS time ===</span>

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<pre style="margin: 0;">+<span id="LC160" class="line" lang="plaintext"></span>

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<pre style="margin: 0;">+<span id="LC161" class="line" lang="plaintext">Raw GPS time is expressed as weeks since the GPS epoch</span>

</pre>

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<pre style="margin: 0;">+<span id="LC162" class="line" lang="plaintext">1980-01-06T00:00:00, and seconds within the week.  Due to cost</span>

</pre>

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<pre style="margin: 0;">+<span id="LC163" class="line" lang="plaintext">constraints at the time the system was designed, the week counters are</span>

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<pre style="margin: 0;">+<span id="LC164" class="line" lang="plaintext">only 10 bits long; thus, GPS time has a period of 1024 weeks (a bit</span>

</pre>

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<pre style="margin: 0;">+<span id="LC165" class="line" lang="plaintext">over 19 years) footnote:[It is planned that future GPS satellites will</span>

</pre>

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<pre style="margin: 0;">+<span id="LC166" class="line" lang="plaintext">increase the week counter length to 13 bits, for a period of 8192</span>

</pre>

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<pre style="margin: 0;">+<span id="LC167" class="line" lang="plaintext">weeks or more than 157 years].  At time of writing, one GPS rollover</span>

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<pre style="margin: 0;">+<span id="LC168" class="line" lang="plaintext">has occurred at 1999-08-22T00:00:00 and the next will occur on</span>

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<pre style="margin: 0;">+<span id="LC169" class="line" lang="plaintext">2019-05-06.</span>

</pre>

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<pre style="margin: 0;">+<span id="LC170" class="line" lang="plaintext"></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="171" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

171

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<pre style="margin: 0;">+<span id="LC171" class="line" lang="plaintext">(GPS was originally designed for military geolocation, not time</span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="172" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<pre style="margin: 0;">+<span id="LC172" class="line" lang="plaintext">service. It does not seem to have occurred to the originators that</span>

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<pre style="margin: 0;">+<span id="LC173" class="line" lang="plaintext">long-service GPS clocks would ever be built.)</span>

</pre>

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<pre style="margin: 0;">+<span id="LC174" class="line" lang="plaintext"></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="175" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<pre style="margin: 0;">+<span id="LC175" class="line" lang="plaintext">Raw GPS time does not include subseconds, but does ship a</span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="176" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

176

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<pre style="margin: 0;">+<span id="LC176" class="line" lang="plaintext">top-of-second notification accurate to 50ns.  Receivers are expected</span>

</pre>

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<pre style="margin: 0;">+<span id="LC177" class="line" lang="plaintext">to compose this with message data to report time at subsecond</span>

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<pre style="margin: 0;">+<span id="LC178" class="line" lang="plaintext">precision.  Many, however, do not, and those that do are often</span>

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<td class="diff-line-num new new_line" data-linenumber="179" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<pre style="margin: 0;">+<span id="LC179" class="line" lang="plaintext">inaccurate; consumer-grade hardware often has jitter of over a tenth</span>

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<td class="diff-line-num new new_line" data-linenumber="180" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<pre style="margin: 0;">+<span id="LC180" class="line" lang="plaintext">of a second (100ms). On the other hand, carefully designed GPSes</span>

</pre>

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<pre style="margin: 0;">+<span id="LC181" class="line" lang="plaintext">easily deliver 1ms accuracy, and some do 20 times better than that.  A</span>

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<pre style="margin: 0;">+<span id="LC182" class="line" lang="plaintext">more detailed discussion of accuracy budgets see the</span>

</pre>

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<pre style="margin: 0;">+<span id="LC183" class="line" lang="plaintext">http://www.catb.org/gpsd/time-service-intro.html[Introduction to Time</span>

</pre>

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<pre style="margin: 0;">+<span id="LC184" class="line" lang="plaintext">Service].</span>

</pre>

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<pre style="margin: 0;">+<span id="LC185" class="line" lang="plaintext"></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="186" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<pre style="margin: 0;">+<span id="LC186" class="line" lang="plaintext">Raw GPS time is not leap-second corrected, but the satellite messages</span>

</pre>

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<pre style="margin: 0;">+<span id="LC187" class="line" lang="plaintext">include a leap-second offset field in a special update approximately</span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="188" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<pre style="margin: 0;">+<span id="LC188" class="line" lang="plaintext">every 20 minutes.  If the receiver firmware is not carefully designed</span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="189" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

189

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<pre style="margin: 0;">+<span id="LC189" class="line" lang="plaintext">there will be a window between device boot time and the next</span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="190" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

190

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<pre style="margin: 0;">+<span id="LC190" class="line" lang="plaintext">leap-second update, and around leap-second correctipns, during which</span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="191" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

191

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<pre style="margin: 0;">+<span id="LC191" class="line" lang="plaintext">the reported second will be incorrect.</span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="192" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

192

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<pre style="margin: 0;">+<span id="LC192" class="line" lang="plaintext"></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="193" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

193

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<pre style="margin: 0;">+<span id="LC193" class="line" lang="plaintext">The qualifications about careful design are important because GPS</span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="194" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

194

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<pre style="margin: 0;">+<span id="LC194" class="line" lang="plaintext">firmware - especially in inexpensive consumer-grade devices - is</span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="195" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

195

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<pre style="margin: 0;">+<span id="LC195" class="line" lang="plaintext">often low-quality and poorly tested due to vendors trying to squeeze</span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="196" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

196

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<pre style="margin: 0;">+<span id="LC196" class="line" lang="plaintext">every possible dime out of their costs.  Even major vendors like</span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="197" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

197

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<pre style="margin: 0;">+<span id="LC197" class="line" lang="plaintext">SiRF have a history of embarrassing firmware glitches, and the</span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="198" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

198

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<pre style="margin: 0;">+<span id="LC198" class="line" lang="plaintext">semi-anonymous outfits in Shenzhen and on Taiwan are worse.</span>

</pre>

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199

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<pre style="margin: 0;">+<span id="LC199" class="line" lang="plaintext"></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="200" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

200

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<pre style="margin: 0;">+<span id="LC200" class="line" lang="plaintext">The worst impact of careless, low-budget design when using a GPS as</span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="201" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<pre style="margin: 0;">+<span id="LC201" class="line" lang="plaintext">an NTP clock is not around either jitter or leap-second corrections,</span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="202" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<pre style="margin: 0;">+<span id="LC202" class="line" lang="plaintext">but rather the behavior near GPS and century rollovers.</span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="203" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

203

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<pre style="margin: 0;">+<span id="LC203" class="line" lang="plaintext"></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="204" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

204

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<pre style="margin: 0;">+<span id="LC204" class="line" lang="plaintext">[gps_pivots]</span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="205" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

205

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<pre style="margin: 0;">+<span id="LC205" class="line" lang="plaintext">== GPS pivot dates and rollover compensation ==</span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="206" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

206

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<pre style="margin: 0;">+<span id="LC206" class="line" lang="plaintext"></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="207" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

207

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<pre style="margin: 0;">+<span id="LC207" class="line" lang="plaintext">To yield a UTC date, the weeks+second information from the GPS satellites</span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="208" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

208

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<pre style="margin: 0;">+<span id="LC208" class="line" lang="plaintext">has to be used as an offset to a base date.</span>

</pre>

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<pre style="margin: 0;">+<span id="LC209" class="line" lang="plaintext"></span>

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<pre style="margin: 0;">+<span id="LC210" class="line" lang="plaintext">The most naive way to do this would to simply use the zero date of the</span>

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<pre style="margin: 0;">+<span id="LC211" class="line" lang="plaintext">current era (1024-week cycle) as the base.  Some very early GPS equipment</span>

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<pre style="margin: 0;">+<span id="LC212" class="line" lang="plaintext">seems to have worked this way, but it has the drawback that the device</span>

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<pre style="margin: 0;">+<span id="LC213" class="line" lang="plaintext">time-warps at the next GPS era rollover - which, if your device first ship</span>

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<pre style="margin: 0;">+<span id="LC214" class="line" lang="plaintext">is only a few years before that rollover, is a serious drawback.</span>

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<pre style="margin: 0;">+<span id="LC215" class="line" lang="plaintext"></span>

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<pre style="margin: 0;">+<span id="LC216" class="line" lang="plaintext">There is a relatively simple way to extend the useful life of a GPS</span>

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<pre style="margin: 0;">+<span id="LC217" class="line" lang="plaintext">used as a clock. That is to choose a pivot date in GPS weeks.  When</span>

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<pre style="margin: 0;">+<span id="LC218" class="line" lang="plaintext">your device reports a week number *before* the pivot, you assume that</span>

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<pre style="margin: 0;">+<span id="LC219" class="line" lang="plaintext">a GPS rollover has occurred and add 1024 weeks to the base date.</span>

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<pre style="margin: 0;">+<span id="LC220" class="line" lang="plaintext"></span>

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<pre style="margin: 0;">+<span id="LC221" class="line" lang="plaintext">This technique will postpones time-warping to a full 1024 weeks after</span>

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<pre style="margin: 0;">+<span id="LC222" class="line" lang="plaintext">the pivot date - which the vendor typically makes the release date</span>

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<pre style="margin: 0;">+<span id="LC223" class="line" lang="plaintext">of the device firmware.  But it won't do any better than that; without the</span>

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<pre style="margin: 0;">+<span id="LC224" class="line" lang="plaintext">ability to change the base date, the device will ship incorrect</span>

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<pre style="margin: 0;">+<span id="LC225" class="line" lang="plaintext">reports forever afterwards.</span>

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<pre style="margin: 0;">+<span id="LC226" class="line" lang="plaintext"></span>

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<pre style="margin: 0;">+<span id="LC227" class="line" lang="plaintext">This where careless, low-budget design begins to matter. GPS vendors</span>

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<pre style="margin: 0;">+<span id="LC228" class="line" lang="plaintext">do not document even the fact that they use base or pivot dates, let</span>

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<pre style="margin: 0;">+<span id="LC229" class="line" lang="plaintext">alone what the base and pivot dates for their devices are. As of 2017,</span>

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<pre style="margin: 0;">+<span id="LC230" class="line" lang="plaintext">NTP's developers no not know of any devices for which you can even</span>

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<pre style="margin: 0;">+<span id="LC231" class="line" lang="plaintext">query these parameters, let alone set them.  The best you can generally</span>

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<pre style="margin: 0;">+<span id="LC232" class="line" lang="plaintext">do (and on only some devices) is get the firmware release date; from this,</span>

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<pre style="margin: 0;">+<span id="LC233" class="line" lang="plaintext">you can assume that you will get non-timewarped reports for 1024 weeks</span>

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<pre style="margin: 0;">+<span id="LC234" class="line" lang="plaintext">after that and probably be right.</span>

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<pre style="margin: 0;">+<span id="LC235" class="line" lang="plaintext"></span>

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<pre style="margin: 0;">+<span id="LC236" class="line" lang="plaintext">This is not entirely the GPS vendors' fault.  The truth is, GPS</span>

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<pre style="margin: 0;">+<span id="LC237" class="line" lang="plaintext">reporting protocols are an awful mess.  The closest thing to a</span>

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<pre style="margin: 0;">+<span id="LC238" class="line" lang="plaintext">standard is NMEA0183, originally designed for a different purpose; it</span>

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<pre style="margin: 0;">+<span id="LC239" class="line" lang="plaintext">is poorly specified and has no standard device-control functions at</span>

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<pre style="margin: 0;">+<span id="LC240" class="line" lang="plaintext">all, let alone any for querying base and pivot dates.</span>

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<pre style="margin: 0;">+<span id="LC241" class="line" lang="plaintext">http://www.catb.org/gpsd/[GPSD], the ubiquitous open-source GPS</span>

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<pre style="margin: 0;">+<span id="LC242" class="line" lang="plaintext">manager daemon that shares some developers with NTPsec, works around a</span>

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<pre style="margin: 0;">+<span id="LC243" class="line" lang="plaintext">lot of the general messiness, but can't solve this problem</span>

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<pre style="margin: 0;">+<span id="LC244" class="line" lang="plaintext">because the device capabilities to address it are simply absent.</span>

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<pre style="margin: 0;">+<span id="LC245" class="line" lang="plaintext"></span>

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<pre style="margin: 0;">+<span id="LC246" class="line" lang="plaintext">Finally, when you buy a GPS you do not know - and often will not be</span>

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<pre style="margin: 0;">+<span id="LC247" class="line" lang="plaintext">able to discover - how far in the past its hidden pivot date is.  This</span>

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<pre style="margin: 0;">+<span id="LC248" class="line" lang="plaintext">means that time service operators using a GPS as a local Stratum 0</span>

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<pre style="margin: 0;">+<span id="LC249" class="line" lang="plaintext">need to be aware of the possibility that their device could roll over</span>

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<pre style="margin: 0;">+<span id="LC250" class="line" lang="plaintext">at any time (but especially near the zeo dats of a GPS era) and be</span>

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<pre style="margin: 0;">+<span id="LC251" class="line" lang="plaintext">ready to compensate by dropping in a device with a newer pivot date.</span>

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<pre style="margin: 0;">+<span id="LC252" class="line" lang="plaintext"></span>

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<pre style="margin: 0;">+<span id="LC253" class="line" lang="plaintext">[ntp_pivots]</span>

</pre>

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<pre style="margin: 0;">+<span id="LC254" class="line" lang="plaintext">== NTP pivot dates ==</span>

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<pre style="margin: 0;">+<span id="LC255" class="line" lang="plaintext"></span>

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<pre style="margin: 0;">+<span id="LC256" class="line" lang="plaintext">For purposes of this discussion, a 'resolved' timestamp is one that</span>

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<pre style="margin: 0;">+<span id="LC257" class="line" lang="plaintext">has been mapped from a 32-bit seconds offset in some era to a full</span>

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<pre style="margin: 0;">+<span id="LC258" class="line" lang="plaintext">64-bit timestamp implicitly based in some known era.</span>

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<pre style="margin: 0;">+<span id="LC259" class="line" lang="plaintext"></span>

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<pre style="margin: 0;">+<span id="LC260" class="line" lang="plaintext">When {ntpdman} receives a unresolved timestamp from an upstream server</span>

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<pre style="margin: 0;">+<span id="LC261" class="line" lang="plaintext">that timestamp could be based in any era prior to the current</span>

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<pre style="margin: 0;">+<span id="LC262" class="line" lang="plaintext">wall-clock date - but, by definition, we may not know the wall-clock</span>

</pre>

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<pre style="margin: 0;">+<span id="LC263" class="line" lang="plaintext">date with confidence yet (not having achieved sync).</span>

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<pre style="margin: 0;">+<span id="LC264" class="line" lang="plaintext"></span>

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<pre style="margin: 0;">+<span id="LC265" class="line" lang="plaintext">To resolve this ambiguity, NTP also uses an internal pivot date.  It</span>

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<pre style="margin: 0;">+<span id="LC266" class="line" lang="plaintext">chooses the era that would minimize the absolute value of the time</span>

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<pre style="margin: 0;">+<span id="LC267" class="line" lang="plaintext">difference between the resolved timestamp and its internal pivot date.</span>

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<pre style="margin: 0;">+<span id="LC268" class="line" lang="plaintext"></span>

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<pre style="margin: 0;">+<span id="LC269" class="line" lang="plaintext">This resolution technique is part of the NTP specification. It will</span>

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<pre style="margin: 0;">+<span id="LC270" class="line" lang="plaintext">normally resolve to the current era, but may in cases where the pivot</span>

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<pre style="margin: 0;">+<span id="LC271" class="line" lang="plaintext">is within a half-cycle of a rollover time resolve to either the</span>

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<pre style="margin: 0;">+<span id="LC272" class="line" lang="plaintext">previous or the next era.</span>

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<pre style="margin: 0;">+<span id="LC273" class="line" lang="plaintext"></span>

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<pre style="margin: 0;">+<span id="LC274" class="line" lang="plaintext">An {ntpdman} instance's pivot date will be the date it was compiled</span>

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<pre style="margin: 0;">+<span id="LC275" class="line" lang="plaintext">and built.  </span>

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<pre style="margin: 0;">+<span id="LC276" class="line" lang="plaintext"></span>

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<pre style="margin: 0;">+<span id="LC277" class="line" lang="plaintext">It is fairly easy to see that this guarantees correct resolution if the</span>

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<pre style="margin: 0;">+<span id="LC278" class="line" lang="plaintext">pivot dates of the communicating ntpds are within a half-cycle</span>

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<pre style="margin: 0;">+<span id="LC279" class="line" lang="plaintext">(88 years) of each other, even if there is a rollover between the pivot</span>

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<pre style="margin: 0;">+<span id="LC280" class="line" lang="plaintext">dates.</span>

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<pre style="margin: 0;">+<span id="LC281" class="line" lang="plaintext"></span>

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<pre style="margin: 0;">+<span id="LC282" class="line" lang="plaintext">'''''</span>

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<pre style="margin: 0;">+<span id="LC283" class="line" lang="plaintext"></span>

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<pre style="margin: 0;">+<span id="LC284" class="line" lang="plaintext">image::pic/pogo1a.gif[align="center"]</span>

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<pre style="margin: 0;">+<span id="LC285" class="line" lang="plaintext"></span>

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<pre style="margin: 0;">+<span id="LC286" class="line" lang="plaintext">include::includes/footer.txt[]</span></pre>

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<br>

</li>

<li id="32e64a7002392c9e63eb88ff539e034049b8c58d">

<a href="https://gitlab.com/NTPsec/ntpsec/compare/f54d6919c53317b87a233bc64d22a266272d9ae7...c48ba0f1a21e94b5d0321a433f04c9deb5a6d5b4#32e64a7002392c9e63eb88ff539e034049b8c58d"><strong>libparse/README</strong></a>

<hr>

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<td class="diff-line-num unfold js-unfold new_line" data-linenumber="18" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -18,7 +18,7 @@ selects the clock type which determines how I/O is done, the tty</td>

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<pre style="margin: 0;"> <span id="LC18" class="line" lang="plaintext">parameters and the NTP parameters.</span>

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<pre style="margin: 0;"> <span id="LC19" class="line" lang="plaintext"></span>

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<pre style="margin: 0;"> <span id="LC20" class="line" lang="plaintext">refclock_parse operates on an abstract reference clock that delivers</span>

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<pre style="margin: 0;">-<span id="LC21" class="line" lang="plaintext">time stamps and statuses. Offsets and sychron<span class="idiff left right">- is</span>ation information is</span>

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<pre style="margin: 0;">+<span id="LC21" class="line" lang="plaintext">time stamps and statuses. Offsets and sychron<span class="idiff left right">iz</span>ation information is</span>

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<pre style="margin: 0;"> <span id="LC22" class="line" lang="plaintext">derived from this data and passed on to refclock_receive of ntpd which</span>

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<pre style="margin: 0;"> <span id="LC23" class="line" lang="plaintext">uses that data for syncronisation.</span>

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<pre style="margin: 0;"> <span id="LC24" class="line" lang="plaintext"></span>

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</li>

<li id="b78eba02f54c555edf3cfc6828cbe1b81c8c2bf0">

<a href="https://gitlab.com/NTPsec/ntpsec/compare/f54d6919c53317b87a233bc64d22a266272d9ae7...c48ba0f1a21e94b5d0321a433f04c9deb5a6d5b4#b78eba02f54c555edf3cfc6828cbe1b81c8c2bf0"><strong>libparse/clk_computime.c</strong></a>

<hr>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="29" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="diff-line-num unfold js-unfold new_line" data-linenumber="29" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -29,7 +29,8 @@</td>

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<pre style="margin: 0;"> <span id="LC29" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * Parse        T:  :  :  :  :  :  :  rn</span></span>

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<pre style="margin: 0;"> <span id="LC30" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *</span></span>

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<pre style="margin: 0;"> <span id="LC31" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * T     Startcharacter "T" specifies start of the timestamp</span></span>

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<td class="diff-line-num new_line old" data-linenumber="32" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC32" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * YY    Year MM Month 1-12</span></span>

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<td class="diff-line-num new old_line" data-linenumber="33" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<pre style="margin: 0;">+<span id="LC32" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * YY    Year</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="33" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<pre style="margin: 0;">+<span id="LC33" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * MM    Month 1-12</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="33" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<td class="diff-line-num new_line" data-linenumber="34" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<pre style="margin: 0;"> <span id="LC34" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * MD    Day of the month</span></span>

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<td class="diff-line-num old_line" data-linenumber="34" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<pre style="margin: 0;"> <span id="LC35" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * WD    Day of week</span></span>

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<td class="diff-line-num old_line" data-linenumber="35" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<td class="diff-line-num new_line" data-linenumber="36" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<pre style="margin: 0;"> <span id="LC36" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * HH    Hour</span></span>

</pre>

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