contrib/tzcode/tz-link.html

16 <a href="https://en.wikipedia.org/wiki/Time_zone">Time zone</a> and
17 <a href="https://en.wikipedia.org/wiki/Daylight_saving_time">daylight-saving</a>
67 The <a href="https://en.wikipedia.org/wiki/Public_domain">public-domain</a>
77 <a href="https://www.gnu.org/software/libc/">the
80 <a href="https://en.wikipedia.org/wiki/Linux"><abbr>GNU</abbr>/Linux</a>),
81 <a href="https://www.android.com">Android</a>,
82 <a href="https://www.freebsd.org">Free<abbr
84 <a href="https://netbsd.org">Net<abbr>BSD</abbr></a>,
85 <a href="https://www.openbsd.org">Open<abbr>BSD</abbr></a>,
86 <a href="https://www.chromium.org/chromium-os/">ChromiumOS</a>,
87 <a href="https://cygwin.com">Cygwin</a>,
88 <a href="https://mariadb.org">MariaDB</a>,
89 <a href="https://musl.libc.org">musl libc</a>,
90 <a href="https://www.mysql.com">MySQL</a>,
91 <a href="https://en.wikipedia.org/wiki/WebOS"><abbr
93 <a href="https://en.wikipedia.org/wiki/IBM_AIX"><abbr
95 <a href="https://www.apple.com/os/ios/"><abbr
97 <a href="https://www.apple.com/os/macos/">macOS</a>,
98 <a href="https://www.microsoft.com/en-us/windows">Microsoft Windows</a>,
99 <a href="https://vmssoftware.com">Open<abbr
101 <a href="https://www.oracle.com/database/">Oracle Database</a>,
102 <a href="https://www.oracle.com/solaris/solaris11/">Oracle Solaris</a>,
103 and <a href="https://qnx.software/en">QNX</a>.</p>
119 href="https://en.wikipedia.org/wiki/POSIX"><abbr
126 <a href="https://en.wikipedia.org/wiki/Universal_Time">Universal
128 href="https://en.wikipedia.org/wiki/Greenwich_Mean_Time">Greenwich Mean
131 href="https://en.wikipedia.org/wiki/Coordinated_Universal_Time">Coordinated
142 href="https://en.wikipedia.org/wiki/Unix_shell">shell</a> commands download
144 <a href="https://en.wikipedia.org/wiki/Tar_(computing)">tarballs</a>
148 <a href="https://www.gnu.org/software/wget/">wget</a> https://www.iana.org/time-zones/repository/tz…
149 wget https://www.iana.org/time-zones/repository/tzdata-latest.tar.gz
150 <a href="https://www.gnu.org/software/gzip/">gzip</a> -dc tzcode-latest.tar.gz | <a href="https://w…
156 <pre><code>wget <a href="https://www.iana.org/time-zones/repository/tzdb-latest.tar.lz">https://www…
157 <a href="https://www.nongnu.org/lzip/">lzip</a> -dc tzdb-latest.tar.lz | tar -xf -
161 <a href="https://www.iana.org/time-zones">Time Zone Database website</a>
162 of the <a href="https://www.iana.org">Internet Assigned Numbers
174 <a href="https://pubs.opengroup.org/onlinepubs/9799919799/utilities/pax.html#tag_20_94_13_06">POSIX
179 <a href="https://ftp.iana.org/tz/releases/">Older archived releases are
181 <a href="https://en.wikipedia.org/wiki/HTTPS"><abbr
182 title="Hypertext Transfer Protocol Secure">HTTPS</abbr></a>,
183 <a href="https://en.wikipedia.org/wiki/Rsync"><abbr
185 <a href="https://en.wikipedia.org/wiki/FTP"><abbr
188 retrieved from <a href="https://github.com">GitHub</a> via the shell
190 <pre><code><a href="https://git-scm.com">git</a> clone <a href="https://github.com/eggert/tz">https…
202 <a href="https://www.rfc-editor.org/rfc/rfc9636">The
220 <a href="https://lists.iana.org/postorius/lists/tz.iana.org/">the mailing
222 <a href="https://tzdata-meta.timtimeonline.com">Metadata for mailing list
224 generated <a href="https://github.com/timparenti/tzdata-meta">automatically</a>.
237 for <a href="https://www.ibm.com/support/pages/aix-time-zone-olson-tzdata-updates"><abbr>AIX</abbr>…
239 href="https://source.android.com/docs/core/permissions/timezone-rules">Android</a>,
241 href="https://unicode-org.github.io/icu/userguide/datetime/timezone/"><abbr
243 <a href="https://www.ibm.com/support/pages/java-sdk-time-zone-update-utility"><abbr>IBM</abbr>
245 <a href="https://www.joda.org/joda-time/tz_update.html">Joda-Time</a>, <a
246 href="https://dev.mysql.com/doc/refman/en/time-zone-support.html">MySQL</a>,
247 <a href="https://nodatime.org/userguide/tzdb">Noda Time</a>, and <a
248 href="https://www.oracle.com/java/technologies/javase/tzupdater-readme.html">OpenJDK/Oracle JDK</a>.
252 <a href="https://en.wikipedia.org/wiki/UTF-8"><abbr
254 <a href="https://en.wikipedia.org/wiki/Text_file">text files</a>
255 with lines terminated by <a href="https://en.wikipedia.org/wiki/Newline"><abbr
258 as <a href="https://www.gnu.org/software/emacs/">GNU Emacs</a>,
259 <a href="https://gedit-text-editor.org">gedit</a>, and
260 <a href="https://www.vim.org">vim</a>.
262 <a href="https://packagecontrol.io/packages/zoneinfo">Sublime
264 href="https://www.sublimetext.com">Sublime Text</a> and the <a
265 href="https://marketplace.visualstudio.com/items?itemName=gilmoreorless.vscode-zoneinfo">VSCode
266 zoneinfo</a> extension for <a href="https://code.visualstudio.com">Visual
271 <a href="https://www.rfc-editor.org/rfc/rfc6557">Procedures for
276 <a href="https://a0.github.io/a0-tzmigration/">A0 TimeZone Migration</a>
285 “<a href="https://www.icann.org/en/blogs/details/how-time-zones-are-coordinated-13-03-2023-en">How
311 href="https://en.wikipedia.org/wiki/End_user">end users</a> see changes.
313 href="https://en.wikipedia.org/wiki/Quality_assurance">quality
326 href="https://codeofmatt.com/on-the-timing-of-time-zone-changes/">On
335 <a href="https://en.wikipedia.org/wiki/Tz_database">tz database</a> is
341 href="https://blog.jonudell.net/2009/10/23/a-literary-appreciation-of-the-olsonzoneinfotz-database/…
344 <li><a href="https://doi.org/10.1145/3340301.3341125">What time is it:
356 <li><a href="https://time.is">Time.is</a> shows locations’
358 <li><a href="https://www.timejones.com">TimeJones.com</a>,
359 <a href="https://timezoneconverterapp.com">Time Zone Converter</a> and
360 <a href="https://www.worldclock.com">The World Clock</a>
362 <li><a href="https://timezonedb.com/download">TimeZoneDB Database</a>
364 <a href="https://en.wikipedia.org/wiki/Comma-separated_values"><abbr
366 in <a href="https://en.wikipedia.org/wiki/SQL"><abbr
369 href="https://twiki.org/cgi-bin/xtra/tzdatepick.html">Date and Time Gateway</a>
372 href="https://www.convertit.com/Go/ConvertIt/World_Time/Current_Time.ASP">Current
374 <li><a href="https://www.timeanddate.com/worldclock/">The World Clock –
376 <li><a href="https://24timezones.com">24TimeZones</a> has a world
378 <li><a href="https://www.zeitverschiebung.net/en/">Time Difference</a>
380 <li><a href="https://www.wx-now.com">Weather Now</a> and
381 <a href="https://www.thetimenow.com">The Time Now</a> list the weather too.</li>
388 <li><a href="https://www.rfc-editor.org/rfc/rfc7808">Time Zone
391 <a href="https://www.rfc-editor.org/rfc/rfc7809">CalDAV</a>
394 <a href="https://devguide.calconnect.org/Time-Zones/TZDS/">TZDIST
396 <li>The <a href="https://www.rfc-editor.org/rfc/rfc5545">iCalendar format</a>
401 variant <a href="https://www.rfc-editor.org/rfc/rfc6321">xCal</a>
403 <a href="https://www.w3.org/XML/"><abbr
405 <a href="https://www.rfc-editor.org/rfc/rfc7265">jCal</a>
407 uses <a href="https://www.json.org/json-en.html"><abbr
420 <li><a href="https://github.com/libical/vzic">Vzic</a> is a <a
421 href="https://en.wikipedia.org/wiki/C_(programming_language)">C</a>
426 href="https://www.gnu.org/copyleft/gpl.html"><abbr>GNU</abbr>
430 href="https://metacpan.org/release/DateTime-TimeZone">DateTime::TimeZone</a>
432 <code><abbr>tz</abbr></code> source into <a href="https://www.perl.org">Perl</a>
434 href="https://github.com/houseabsolute/DateTime.pm/wiki">DateTime Project</a>,
440 <li>The <a href="https://howardhinnant.github.io/date/tz.html">Time Zone
442 <a href="https://en.wikipedia.org/wiki/C++">C++</a> parser and
444 href="https://en.cppreference.com/w/cpp/chrono.html"><code>std::chrono</code> API</a>
448 <li><a id="ICU" href="https://icu.unicode.org">International Components for
450 href="https://en.wikipedia.org/wiki/Java_(programming_language)">Java</a>
458 <li>The <a href="https://github.com/lau/tzdata">Tzdata</a> package for
459 the <a href="https://elixir-lang.org">Elixir</a> language downloads
466 href="https://www.oracle.com/java/technologies/javase/tzupdater-readme.html">TZUpdater
468 <a href="https://openjdk.org">OpenJDK</a> and
469 <a href="https://jdk.java.net">Oracle JDK</a>.
471 <a href="https://www.oracle.com/a/tech/docs/tzupdater-lic.html">Java SE
474 href="https://www.oracle.com/technical-resources/articles/java/jf14-date-time.html">Java
476 href="https://www.threeten.org/threeten-extra/">ThreeTen-Extra</a>,
478 <li><a href="https://www.joda.org/joda-time/">Joda-Time – Java date
484 href="https://www.apache.org/licenses/LICENSE-2.0">Apache License</a>.</li>
485 <li><a href="https://bell-sw.com/pages/iana-updater/">IANA Updater</a> and <a
486 href="https://www.azul.com/products/components/ziupdater-time-zone-tool/">ZIUpdater</a>
489 <li><a href="https://github.com/MenoData/Time4A">Time4A: Advanced date and
491 <a href="https://github.com/MenoData/Time4J">Time4J: Advanced date,
496 href="https://www.gnu.org/copyleft/lesser.html"><abbr>GNU</abbr> Lesser
502 <li><a href="https://nodatime.org">Noda Time – Date and
507 <a href="https://en.wikipedia.org/wiki/JavaScript">JavaScript</a>
509 <code>timeZone</code> option of <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Re…
514 href="https://github.com/formatjs/date-time-format-timezone"><code>Intl.DateTimeFormat</code>
517 <li>The <a href="https://date-fns.org">date-fns</a>
519 in <a href="https://nodejs.org/en/">Node.js</a>.
521 <li><a href="https://github.com/iamkun/dayjs">Day.js</a> is a
523 the <a href="https://momentjs.com/docs/">now-legacy Moment.js</a> date
526 <li><a href="https://moment.github.io/luxon/">Luxon</a> improves
529 <li><a href="https://momentjs.com/timezone/">Moment Timezone</a> is a
532 <li><a href="https://github.com/bigeasy/timezone">Timezone</a> is a
535 <li><a href="https://www.npmjs.com/package/@tubular/time">@tubular/time</a>
539 href="https://en.wikipedia.org/wiki/TypeScript">TypeScript</a>.
541 href="https://www.npmjs.com/package/@tubular/time-tzdb">@tubular/time-tzdb</a>
543 <a href="https://tzexplorer.org">Timezone Database Explorer</a> lets you
548 href="https://github.com/tc39/proposal-temporal"><code>Temporal</code>
551 href="https://codeofmatt.com/javascript-date-type-is-horribly-broken/">JavaScript’s
553 <li><a href="https://github.com/JuliaTime">JuliaTime</a> contains a
555 <a href="https://julialang.org">Julia</a>. It is freely available
557 <li><a href="https://github.com/pavkam/tzdb"><abbr>TZDB</abbr> –
561 <a href="https://en.wikipedia.org/wiki/Object_Pascal">Object Pascal</a>
562 as compiled by <a href="https://en.wikipedia.org/wiki/Delphi_(IDE)">Delphi</a>
564 href="https://en.wikipedia.org/wiki/Free_Pascal"><abbr>FPC</abbr></a>.
566 <li><a href="https://pythonhosted.org/pytz/">pytz – World Timezone
568 <a href="https://www.python.org">Python</a>.
571 href="https://blog.ganssle.io/articles/2018/03/pytz-fastest-footgun.html">pytz:
573 <li><a href="https://tzinfo.github.io">TZInfo –
576 <a href="https://www.ruby-lang.org/en/">Ruby</a>.
578 <li>The <a href="https://www.squeaksource.com/Chronos/">Chronos Date/Time
580 a <a href="https://en.wikipedia.org/wiki/Smalltalk">Smalltalk</a> class
585 <li><a id="Tcl" href="https://www.tcl-lang.org">Tcl</a>
597 href="https://www.gnu.org/software/libc/"><abbr>GNU</abbr> C
603 <li><a href="https://www.gnome.org">GNOME</a>’s
604 <a href="https://docs.gtk.org/glib/">GLib</a> has
610 <a href="https://github.com/bloomberg/bde/wiki">BDE Standard Library</a>’s
614 <li><a href="https://github.com/google/cctz">CCTZ</a> is a simple C++
618 <li>The <a href="https://go.dev">Go programming language</a>
620 href="https://pkg.go.dev/time#LoadLocationFromTZData"><code>LoadLocationFromTZData</code></a>.</li>
622 <a href="https://github.com/nayarsystems/posix_tz_db"><code>posix_tz_db</code>
631 <li><a href="https://github.com/derickr/timelib">Timelib</a> is a C
634 It is used by <a href="https://www.php.net"><abbr
636 <a href="https://hhvm.com"><abbr title="HipHop Virtual Machine">HHVM</abbr></a>,
637 and <a href="https://www.mongodb.com">MongoDB</a>.
641 <li><a href="https://metacpan.org/pod/DateTime::TimeZone::Tzfile">
647 href="https://docs.python.org/3/library/zoneinfo.html"><code>zoneinfo.ZoneInfo</code>
651 <a href="https://docs.python.org/3/license.html">Python Software Foundation
653 A companion <a id="pypi-tzdata" href="https://pypi.org">PyPI</a> module
654 <a href="https://pypi.org/project/tzdata/"><code>tzdata</code></a>
658 public-domain <a href="https://github.com/dbaron/tz.js">tz.js</a>
665 href="https://hackage.haskell.org/package/timezone-olson">timezone-olson</a>
666 package contains <a href="https://www.haskell.org">Haskell</a> code that
675 <li><a href="https://foxclocks.org">FoxClocks</a>
676 is an extension for <a href="https://www.google.com/chrome/">Google
678 href="https://www.firefox.com/en-US/">Firefox</a> and <a
679 href="https://www.thunderbird.net/en-US/">Thunderbird</a>.
681 interface to <a href="https://earth.google.com/web/">Google Earth</a>.
686 <a href="https://en.wikipedia.org/wiki/Windows_Runtime">Windows Runtime</a> /
687 <a href="https://en.wikipedia.org/wiki/Universal_Windows_Platform">Universal Windows Platform</a> c…
688 <a href="https://learn.microsoft.com/en-us/uwp/api/Windows.Globalization.DateTimeFormatting.DateTim…
689 <a href="https://learn.microsoft.com/en-us/uwp/api/windows.globalization.calendar"><code>Calendar</…
691 href="https://learn.microsoft.com/en-us/archive/blogs/bclteam/exploring-windows-time-zones-with-sys…
695 <a href="https://en.wikipedia.org/wiki/Windows_Registry">Windows Registry</a>. The
697 href="https://unicode.org/cldr/charts/latest/supplemental/zone_tzid.html">Zone
699 href="https://github.com/unicode-org/cldr/blob/main/common/supplemental/windowsZones.xml"><abbr>XML…
703 <a href="https://github.com/mattjohnsonpint/TimeZoneConverter">TimeZoneConverter</a>
707 href="https://www.oracle.com/java/">Oracle
717 <li><a href="https://www.astro.com/atlas">Time-zone Atlas</a>
720 <a href="https://search.worldcat.org/title/468828649">for the US</a> and
721 <a href="https://search.worldcat.org/title/76950459">for the world</a>.
723 <a href="https://astrologynewsservice.com/opinion/how-astrologers-contributed-to-the-information-ag…
728 <li><a href="https://en.wikipedia.org/wiki/HP-UX">HP-UX</a> has a database in
732 <li><a href="https://www.worldtimeserver.com">World Time Server</a>
735 href="https://www.iata.org/en/publications/manuals/standard-schedules-information">Standard
745 <li><a href="https://www.worldtimezone.com">World Time Zone Map
749 href="https://blog.poormansmath.net/how-much-is-time-wrong-around-the-world/">How
755 href="https://maps.lib.utexas.edu/maps/world.html">Perry–Castañeda
758 href="https://en.wikipedia.org/wiki/The_World_Factbook"><em>The
760 <a href="https://www.cia.gov">US Central Intelligence Agency</a>.
770 href="https://en.wikipedia.org/wiki/Internet_geolocation">Internet
774 <li><a href="https://github.com/evansiroky/timezone-boundary-builder">Timezone
776 <a href="https://www.openstreetmap.org">Open Street Map</a> data to build
780 <a href="https://opendatacommons.org/licenses/odbl/">Open Data Commons
786 href="https://www.geonames.org/export/web-services.html#timezone">GeoNames
788 href="https://developers.google.com/maps/documentation/timezone/overview">Google
790 the <a href="https://timezonedb.com/api">TimeZoneDB API</a>.
792 by <a href="https://askgeo.com">AskGeo</a>
793 and <a href="https://www.geogarage.com/blog/news-1/post/geogarage-time-zone-api-31">GeoGarage</a>.
796 href="https://stackoverflow.com/questions/16086962/how-to-get-a-time-zone-from-a-location-using-lat…
799 <li><a href="https://statoids.com/statoids.html">Administrative
802 <li><a href="https://manifold.net/info/freestuff.shtml">Manifold Software
807 href="https://en.wikipedia.org/wiki/Territorial_waters">territorial
822 <li><a href="https://www.nist.gov/pml/time-and-frequency-division/popular-links/walk-through-time">A
826 href="https://www.webexhibits.org/daylightsaving/">About Daylight
830 <li><a href="https://www.laphamsquarterly.org/roundtable/time-lords">Time
832 <li><a href="https://www.w3.org/TR/timezone/">Working with Time
836 <li><a href="https://webspace.science.uu.nl/~gent0113/idl/idl.htm">A History of
839 <li><a href="https://statoids.com/tconcept.html">Basic Time
854 <a href="https://robinfo.oma.be/nl/astro-info/tijd/"
856 href="https://robinfo.oma.be/fr/astro-info/heure/"
866 href="https://nrc.canada.ca/en/certifications-evaluations-standards/canadas-official-time/time-zone…
870 <a href="https://www.horaoficial.cl/historia_hora.php" hreflang="es">history of
874 <a href="https://www.hko.gov.hk/en/gts/time/Summertime.htm">history of
877 href="https://www.smg.gov.mo/en/subpage/224/page/174">similar
881 <dd><a href="https://kalendar.beda.cz/kdy-zacina-a-konci-letni-cas"
886 href="https://www.ptb.de/cms/en/ptb/fachabteilungen/abt4/fb-44/ag-441/realisation-of-legal-time-in-…
890 href="https://tz.cs.huji.ac.il">Israel Timezone Files</a>
898 href="https://www.diputados.gob.mx/bibliot/publica/inveyana/polisoc/horver/index.htm"
901 <dd><a href="https://webspace.science.uu.nl/~gent0113/wettijd/wettijd.htm"
906 href="https://www.govt.nz/browse/recreation-and-the-environment/daylight-saving/history-of-daylight…
910 href="https://mtde.gov.ps/home/TimeZone"
914 <a href="https://oal.ul.pt/hora-legal/" hreflang="pt">history of
918 href="https://web.archive.org/web/20190822231045/http://www.math.nus.edu.sg/~mathelmr/teaching/time…
923 href="https://www.polyomino.org.uk/british-time/">History of
928 href="https://www.transportation.gov/regulations/recent-time-zone-proceedings">Recent
931 href="https://geodata.bts.gov/datasets/usdot::time-zones/about">Time
939 href="https://sohma.armada.mil.uy/index.php/servicios/datos-astronomicos" hreflang="es">almanac
952 <a href="https://bmjopen.bmj.com/content/7/6/e014319.long">Impact of
955 <em>BMJ Open.</em> 2017;7(6):e014319. doi:<a href="https://doi.org/10.1136/bmjopen-2016-014319">10.…
962 doi:<a href="https://doi.org/10.5547/01956574.39.2.thav">10.5547/01956574.39.2.thav</a>.
967 href="https://journals.sagepub.com/doi/full/10.1177/0961463X241310562">What
970 doi:<a href="https://doi.org/10.1177/0961463X241310562">10.1177/0961463X241310562</a>.
977 href="https://doi.org/10.1016/j.smrv.2025.102161">10.1016/j.smrv.2025.102161</a>.
987 <a href="https://www.ama-assn.org/press-center/ama-press-releases/ama-calls-permanent-standard-time…
990 <a href="https://onlinelibrary.wiley.com/doi/10.1111/jsr.14352">The
993 doi:<a href="https://doi.org/10.1111/jsr.14352">10.1111/jsr.14352</a>.
996 href="https://academic.oup.com/sleep/article/45/12/zsac236/6717940">It is time
1001 doi:<a href="https://doi.org/10.1093/sleep/zsac236">10.1093/sleep/zsac236</a>.
1005 <a href="https://jcsm.aasm.org/doi/10.5664/jcsm.10898">Permanent standard time
1009 doi:<a href="https://doi.org/10.5664/jcsm.10898">10.5664/jcsm.10898</a>.
1014 <a href="https://journals.sagepub.com/doi/10.1177/0748730419854197">Why
1017 doi:<a href="https://doi.org/10.1177/0748730419854197">10.1177/0748730419854197</a>.
1032 <li><a href="https://doi.org/10.1007/978-3-319-59909-0">The Science of
1034 <li><a href="https://www.ntp.org"><abbr
1039 <li>The <a href="https://www.usenix.org/system/files/conference/nsdi18/nsdi18-geng.pdf"><span style…
1043 href="https://www.nist.gov/el/intelligent-systems-division-73500/ieee-1588">Precision
1049 href="https://www.rfc-editor.org/rfc/rfc4833">Timezone
1053 href="https://en.wikipedia.org/wiki/Dynamic_Host_Configuration_Protocol"><abbr>DHCP</abbr></a>
1056 <li><a href="https://www.ucolick.org/~sla/leapsecs/timescales.html">Time
1061 <li>The <a href="https://www.iau.org"><abbr
1063 href="https://www.iausofa.org"><abbr
1066 href="https://en.wikipedia.org/wiki/Fortran">Fortran</a>
1071 <a href="https://www.iausofa.org/terms-and-conditions">SOFA license</a>.</li>
1073 href="https://www.giss.nasa.gov/tools/mars24/help/notes.html">Mars24 Sunclock
1082 href="https://www.itu.int/rec/R-REC-TF.460-6-200202-I/">Standard-frequency
1086 href="https://www.iers.org/IERS/EN/Publications/Bulletins/bulletins.html"><abbr
1107 <li><a href="https://kb.meinbergglobal.com/kb/time_sync/ntp/configuration/ntp_leap_second_file">The
1112 <a href="https://www.ntp.org">classic
1114 and <a href="https://ntpsec.org">NTPsec</a>.
1119 by <a href="https://chrony-project.org"><code>chrony</code></a>,
1121 <li><a href="https://developers.google.com/time/smear">Leap Smear</a>
1127 href="https://gitlab.com/NTPsec/ntpsec/-/blob/master/docs/leapsmear.adoc">supported</a>
1129 href="https://github.com/google/unsmear">supports</a> conversion between
1132 <a href="https://www.rfc-editor.org/rfc/rfc8633#section-3.7.1">§3.7.1 of
1138 href="https://pairlist6.pair.net/mailman/listinfo/leapsecs">Leap
1140 href="https://gge.ext.unb.ca/Resources/gpsworld.november99.pdf">McCarthy
1143 <a href="https://www.cl.cam.ac.uk/~mgk25/time/metrologia-leapsecond.pdf">The
1145 <a href="https://www.ucolick.org/~sla/leapsecs/"><abbr>UTC</abbr>
1150 <a href="https://www.bipm.org/en/cgpm-2022/resolution-4">decided in 2022</a>
1154 href="https://www.itu.int/dms_pub/itu-r/opb/act/R-ACT-WRC.15-2023-PDF-E.pdf">resolved
1160 <li>Levine J. <a href="https://www.preprints.org/manuscript/202406.0043">A
1163 href="https://doi.org/10.1088/1681-7575/ad6266">10.1088/1681-7575/ad6266</a>.</li>
1174 <li>The <a id="CLDR" href="https://cldr.unicode.org">Unicode Common Locale Data
1179 <a href="https://unicode.org/cldr/charts/latest/by_type/">by-type
1184 <a href="https://www.cl.cam.ac.uk/~mgk25/iso-time.html">A summary of
1187 href="https://www.iso.org/standard/70907.html"><em><abbr
1192 <a href="https://www.w3.org/TR/xmlschema/#dateTime"><abbr>XML</abbr>
1195 <li><a href="https://www.rfc-editor.org/rfc/rfc5322#section-3.3">§3.3 of
1198 href="https://en.wikipedia.org/wiki/Hypertext_Transfer_Protocol"><abbr>HTTP</abbr></a>
1201 <a href="https://www.rfc-editor.org/rfc/rfc3339">Date and Time
1204 An extension, <a href="https://www.rfc-editor.org/rfc/rfc9557">Date
1210 <a href="https://web.archive.org/web/20190130042457/https://www.hackcraft.net/web/datetime/">Date &…