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SCCS-file: tz-link.htm
SCCS-SID: 7.43
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Paul Eggert
2004-07-19 14:32:48 -04:00
committed by Paul Eggert
parent 82017f6eea
commit 50d0fb90c9

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@ -9,7 +9,7 @@
<meta http-equiv="Content-type" content='text/html; charset="US-ASCII"' />
<meta name="DC.Creator" content="Eggert, Paul" />
<meta name="DC.Contributor" content="Olson, Arthur David" />
<meta name="DC.Date" content="2004-05-24" />
<meta name="DC.Date" content="2004-07-13" />
<meta name="DC.Description"
content="Sources of information about time zones and daylight saving time" />
<meta name="DC.Identifier" content="http://www.twinsun.com/tz/tz-link.htm" />
@ -47,7 +47,7 @@ including
<a href="http://www.apple.com/macosx/">Mac OS X</a>,
<a href="http://h71000.www7.hp.com/">OpenVMS</a>,
<a href="http://wwws.sun.com/software/solaris/">Solaris</a>,
<a href="http://www.tru64unix.compaq.com/">Tru64</a>, and
<a href="http://h30097.www3.hp.com/">Tru64</a>, and
<a href="http://www.sco.com/products/unixware/">UnixWare</a>.</p>
<p>
Each location in the database represents a national region where all
@ -104,14 +104,9 @@ is a text-based point-and-click interface to tables of current time
throughout the world.</li>
<li>Fancier web interfaces, roughly in ascending order of complexity, include:
<ul>
<li><a href="http://www.hilink.com.au/times/">Local Times Around the
World</a></li>
<li><a href="http://www.convertit.com/Go/ConvertIt/World_Time/Current_Time.ASP">Current Time in 1000 Places</a></li>
<li><a href="http://timezoneconverter.com/">Time Zone Converter</a></li>
</ul></li>
<li><a href="http://www.holidayfestival.com/">The Worldwide Holiday
&amp; Festival Site</a> lists DST-related clock changes along with
holidays.</li>
<li><a href="http://www.timeanddate.com/worldclock/">The World Clock -
Time Zones</a>
is a web interface to a time zone database derived from
@ -152,9 +147,8 @@ contains a script <code>parse_olson</code> that compiles
<code>tz</code> source into <a href="http://www.perl.org/">Perl</a>
modules. It is part of the Perl <a
href="http://datetime.perl.org/">DateTime Project</a>, which is freely
available under both the GPL and the Perl <a
href="http://www.perl.com/language/misc/Artistic.html">Artistic
License</a>. DateTime::TimeZone also contains a script
available under both the GPL and the Perl Artistic
License. DateTime::TimeZone also contains a script
<code>tests_from_zdump</code> that generates test cases for each clock
transition in the <code>tz</code> database.</li>
<li><a href="http://oss.software.ibm.com/icu/">International Components for
@ -166,6 +160,10 @@ and time API</a> contains a class
<code>org.joda.time.tz.ZoneInfoCompiler</code> that compiles
<code>tz</code> source into a Joda-specific binary format. Joda Time
is freely available under a BSD-style license.</li>
<li><a href="http://sourceforge.net/projects/pytz/">PyTZ - Python Time
Zone Library</a> compiles <code>tz</code> source into
<a href="http://www.python.org/">Python</a>.
It is freely available under a BSD-style license.</li>
</ul>
<h2>Other <code>tz</code> binary file readers</h2>
<ul>
@ -180,15 +178,14 @@ and is widely used in GNU/Linux systems.</li>
is a <code>tz</code> binary file reader written in Java.
It is freely available under the GNU LGPL.</li>
<li><a href="http://s.keim.free.fr/tz/doc.html">Python time zones</a>
is a <code>tz</code> binary file reader written in <a
href="http://www.python.org/">Python</a>. It is freely available
under a BSD-style license.</li>
is a <code>tz</code> binary file reader written in Python.
It is freely available under a BSD-style license.</li>
</ul>
<h2>Other <code>tz</code>-based time zone conversion software</h2>
<ul>
<li><a href="http://java.sun.com/">Sun Java</a> releases since 1.4
contain a copy of a recent <samp>tz</samp> database in a Java-specific
format.</li>
contain a copy of a subset of a recent <samp>tz</samp> database in a
Java-specific format.</li>
<li><a
href="http://www1.tip.nl/~t876506/AboutTimeZonesHC.html">HyperCard
time zones calculator</a> is a HyperCard stack.</li>
@ -198,8 +195,8 @@ Microsoft Windows program.</li>
</ul>
<h2>Other time zone databases</h2>
<ul>
<li><a href="http://www.astro.com/cgi-bin/atlw3/aq.cgi?lang=e">Atlas Query
- Astrodienst</a> is Astrodienst's Web version of Shanks's
<li><a href="http://www.astro.com/cgi/aq.cgi?lang=e">Atlas Query</a>
is Astrodienst's Web version of Shanks's
excellent time zone history atlases published in both <a
href="http://astrocom.com/software/pcatlas.php">computer</a> and <a
href="http://astrocom.com/books/xrefa.php#SHANKS">book</a> form by <a
@ -217,7 +214,7 @@ for the <code>usno*</code> files in the <code>tz</code> distribution.</li>
<li><a href="http://www.airportcitycodes.com/aaa/">Airlines, Airplanes
and Airports</a> lists current standard times for thousands of
airports around the world. This seems to be derived from
the <a href="http://www.iata.org/sked/publications/">Standard
the <a href="http://www.iata.org/ps/publications/9179.htm">Standard
Schedules Information Manual (SSIM)</a> of the
the <a href="http://www.iata.org/">International Air Transport
Association</a>,
@ -238,8 +235,8 @@ recent editions.
The pictorial quality is good,
but the maps do not indicate summer time,
and parts of the data are a few years out of date.</li>
<li><a href="http://worldtimezone.com/">World timezones map with
current time</a>
<li><a href="http://worldtimezone.com/">Current time around the world
and standard time zones map of the world</a>
has several fancy time zone maps; it covers Russia particularly well.
The maps' pictorial quality is not quite as good as the CIA's
but the maps are more up to date.</li>
@ -252,9 +249,7 @@ boundaries between time zones within countries.</li>
<li>Manifold.net's <a
href="http://www.manifold.net/download/freemaps.html">Free Maps and
GIS Data</a> includes a Manifold-format map of world time zone
boundaries distributed under the GPL. The GeoCommunity's <a
href="http://software.geocomm.com/data/intl_timezones.html">International
Time Zones</a> publishes the same data in other formats.</li>
boundaries distributed under the GPL.</li>
<li>The US Geological Survey's National Atlas of the United States
publishes the <a href="http://www.nationalatlas.gov/timeznm.html">Time
Zones of the United States</a> in the public domain.</li>
@ -304,7 +299,7 @@ Portuguese)</a>.</dd>
<dd>The Institute for National Measurement Standards publishes current
and some older information about <a
href="http://inms-ienm.nrc-cnrc.gc.ca/time_services/daylight_savings_e.html">Time
Zones and Daylight Saving Time</a>.</dd>
Zones &amp; Daylight Saving Time</a>.</dd>
<dt>Chile</dt>
<dd>WebExhibits publishes a <a
href="http://webexhibits.org/daylightsaving/chile.html"
@ -420,6 +415,12 @@ protocols.</li>
<a href="http://www.exit109.com/~ghealton/y2k/yrexamples.html">The
Best of Dates, the Worst of Dates</a> covers many problems encountered
by software developers when handling dates and time stamps.</li>
<li><a
href="http://oss.software.ibm.com/cvs/icu/~checkout~/icuhtml/design/formatting/time_zone_localization.html">Time
Zone Localization</a> is a proposed mechanism for localizing time zone
labels and abbreviations; for example, one might use it to specify
Russian translations for "Eastern European Summer Time", "EEST", and
<code>Europe/Bucharest</code>.</li>
<li>
Alphabetic time zone abbreviations should not be used as unique
identifiers for UTC offsets as they are ambiguous in practice. For