<body>
<h1>Sources for Time Zone and Daylight Saving Time Data</h1>
<address>
-@(#)tz-link.htm 8.15
+@(#)tz-link.htm 8.16
</address>
<p>
Please send corrections to this web page to the
timezone information for all countries</a> displays tables of DST rules.
<li><a href="http://timeanddate.com/worldclock/">The World Clock -
Time Zones</a> lets you sort zone names and convert times.</li>
+<li><a href="http://daylight-savings-time.info/">Graphical Display of
+Time Zones and Daylight Saving Times</a> shows a graph of time
+difference versus time for any pair of locations.</li>
<li>The <a href="http://worldtimeengine.com/">World Time Engine</a>
also contains data about time zone boundaries; it supports queries via place
names and shows location maps.</li>
</ul>
<h2>Other <code>tz</code> compilers</h2>
<ul>
-<li><a href="http://dialspace.dial.pipex.com/prod/dialspace/town/pipexdsl/s/asbm26/vzic/">Vzic iCalendar
+<li><a href="http://www.dachaplin.dsl.pipex.com/vzic/">Vzic iCalendar
Timezone Converter</a> describes a <a
href="http://en.wikipedia.org/wiki/C_%28programming_language%29">C</a>
program that compiles
</ul>
<h2>Time zone boundaries</h2>
<ul>
-<li><a href="http://efele.net/maps/">A map of the TZ timezones in
+<li><a href="http://efele.net/maps/tz/us/">A map of the TZ timezones in
the US</a> contains a <a
href="http://en.wikipedia.org/wiki/Shapefile">shapefile</a> of the
<code>tz</code> regions in the US.</li>
legal time in Britain</a> discusses in detail the country
with perhaps the best-documented history of clock adjustments.
The National Physical Laboratory also maintains an <a
-href="http://www.npl.co.uk/time/measurement_time/summer_time_archive.html">Archive
+href="http://www.npl.co.uk/server.php?show=ConWebDoc.2714">Archive
of Summer time dates</a>.</dd>
</dl>
<h2>Precision timekeeping</h2>