Proposed changes for Argentina, Jan Mayen, worldtimeengine.com, etc.
Paul Eggert
eggert at CS.UCLA.EDU
Thu Dec 27 20:41:26 UTC 2007
Here are some further proposed patches, accumulating changes since
last time. For the southamerica file, these changes assume the
changes that Arthur David Olson has already proposed regarding time in
Argentina; they merely add a few comments giving more credits, and put
comments in what I hope is a more logical order ("logical"? "time in
Argentina"? I must be joking....).
Here are the other proposed changes:
* Move Atlantic/Jan_Mayen to the 'backward' file
(thanks to Jonas Melian for this).
* Add documentation in the newctime manual page explaining that mktime
does not always return identical outputs when given identical inputs
(thanks to Nis Peder Bonde for this).
* Update several URLs in tz-link.htm:
- Add worldtimeengine.com.
- Remove <http://www3.sympatico.ca/c.walton/canada_dst.html>,
as it no longer exists.
- The Leap Second Discussion List has moved to
<http://six.pairlist.net/mailman/listinfo/leapsecs>.
- Adjust several other URLs by removing "www." and trailing "/" and
so forth, when this doesn't result in unnecessary redirection.
* Correct a spelling error in tz-art.htm.
===================================================================
RCS file: RCS/southamerica,v
retrieving revision 2007.10.0.1
retrieving revision 2007.10.0.3
diff -pu -r2007.10.0.1 -r2007.10.0.3
--- southamerica 2007/12/27 17:34:52 2007.10.0.1
+++ southamerica 2007/12/27 20:25:22 2007.10.0.3
@@ -106,18 +106,6 @@ Rule Arg 1989 1992 - Oct Sun>=15 0:00 1:
# from the International Date Line.
Rule Arg 1999 only - Oct Sun>=1 0:00 1:00 S
Rule Arg 2000 only - Mar Sun>=1 0:00 0 -
-# From Jesper Norgaard Welen (2007-12-26)
-# The last hurdle of Argentina DST is over, the proposal was approved in
-# the lower chamber too (Deputados) with a vote 192 for and 2 against.
-# By the way thanks to Mariano Absatz and Daniel Mario Vega for the link to
-# the original scanned proposal, where the dates and the zero hours are
-# clear and unambiguous...This is the article about final approval:
-# <a href="http://www.lanacion.com.ar/politica/nota.asp?nota_id=973996">
-# http://www.lanacion.com.ar/politica/nota.asp?nota_id=973996
-# </a>
-Rule Arg 2007 only - Dec 30 0:00 1:00 S
-Rule Arg 2008 max - Mar Sun>=15 0:00 0 -
-Rule Arg 2008 max - Oct Sun>=1 0:00 1:00 S
#
# From Peter Gradelski via Steffen Thorsen (2000-03-01):
# We just checked with our Sao Paulo office and they say the government of
@@ -152,6 +140,30 @@ Rule Arg 2008 max - Oct Sun>=1 0:00 1:00
# This kind of things had always been done this way in Argentina.
# We are still -03:00 all year round in all of the country.
#
+# From Steffen Thorsen (2007-12-21):
+# A user (Leonardo Chaim) reported that Argentina will adopt DST....
+# all of the country (all Zone-entries) are affected. News reports like
+# http://www.lanacion.com.ar/opinion/nota.asp?nota_id=973037 indicate
+# that Argentina will use DST next year as well, from October to
+# March, although exact rules are not given.
+#
+# From Jesper Norgaard Welen (2007-12-26)
+# The last hurdle of Argentina DST is over, the proposal was approved in
+# the lower chamber too (Deputados) with a vote 192 for and 2 against.
+# By the way thanks to Mariano Absatz and Daniel Mario Vega for the link to
+# the original scanned proposal, where the dates and the zero hours are
+# clear and unambiguous...This is the article about final approval:
+# <a href="http://www.lanacion.com.ar/politica/nota.asp?nota_id=973996">
+# http://www.lanacion.com.ar/politica/nota.asp?nota_id=973996
+# </a>
+#
+# From Paul Eggert (2007-12-22):
+# For dates after mid-2008, the following rules are my guesses and
+# are quite possibly wrong, but are more likely than no DST at all.
+Rule Arg 2007 only - Dec 30 0:00 1:00 S
+Rule Arg 2008 max - Mar Sun>=15 0:00 0 -
+Rule Arg 2008 max - Oct Sun>=1 0:00 1:00 S
+
# From Mariano Absatz (2004-05-21):
# Today it was officially published that the Province of Mendoza is changing
# its timezone this winter... starting tomorrow night....
===================================================================
RCS file: RCS/backward,v
retrieving revision 2007.1
retrieving revision 2007.1.0.1
diff -pu -r2007.1 -r2007.1.0.1
--- backward 2007/01/08 17:17:28 2007.1
+++ backward 2007/12/27 20:21:17 2007.1.0.1
@@ -30,6 +30,7 @@ Link Asia/Thimphu Asia/Thimbu
Link Asia/Makassar Asia/Ujung_Pandang
Link Asia/Ulaanbaatar Asia/Ulan_Bator
Link Atlantic/Faroe Atlantic/Faeroe
+Link Europe/Oslo Atlantic/Jan_Mayen
Link Australia/Sydney Australia/ACT
Link Australia/Sydney Australia/Canberra
Link Australia/Lord_Howe Australia/LHI
===================================================================
RCS file: RCS/europe,v
retrieving revision 2007.7
retrieving revision 2007.7.0.1
diff -pu -r2007.7 -r2007.7.0.1
--- europe 2007/08/20 14:45:10 2007.7
+++ europe 2007/12/27 20:21:17 2007.7.0.1
@@ -1714,7 +1714,6 @@ Zone Europe/Oslo 0:43:00 - LMT 1895 Jan
# come up with more definitive info about the timekeeping during the
# war years it's probably best just do do the following for now:
Link Europe/Oslo Arctic/Longyearbyen
-Link Europe/Oslo Atlantic/Jan_Mayen
# Poland
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
===================================================================
RCS file: RCS/zone.tab,v
retrieving revision 2007.10
retrieving revision 2007.10.0.1
diff -pu -r2007.10 -r2007.10.0.1
--- zone.tab 2007/12/03 14:50:41 2007.10
+++ zone.tab 2007/12/27 20:21:17 2007.10.0.1
@@ -341,8 +341,7 @@ SE +5920+01803 Europe/Stockholm
SG +0117+10351 Asia/Singapore
SH -1555-00542 Atlantic/St_Helena
SI +4603+01431 Europe/Ljubljana
-SJ +7800+01600 Arctic/Longyearbyen Svalbard
-SJ +7059-00805 Atlantic/Jan_Mayen Jan Mayen
+SJ +7800+01600 Arctic/Longyearbyen
SK +4809+01707 Europe/Bratislava
SL +0830-01315 Africa/Freetown
SM +4355+01228 Europe/San_Marino
===================================================================
RCS file: RCS/newctime.3,v
retrieving revision 2006.2
retrieving revision 2006.2.0.1
diff -pu -r2006.2 -r2006.2.0.1
--- newctime.3 2006/02/20 15:08:16 2006.2
+++ newctime.3 2007/12/27 20:21:17 2006.2.0.1
@@ -115,7 +115,9 @@ A negative value for
causes the
.I mktime
function to attempt to divine whether summer time is in effect
-for the specified time.)
+for the specified time; in this case it does not use a consistent
+rule and may give a different answer when later
+presented with the same argument.)
On successful completion, the values of the
.B tm_wday
and
===================================================================
RCS file: RCS/tz-art.htm,v
retrieving revision 2007.7
retrieving revision 2007.7.0.1
diff -pu -r2007.7 -r2007.7.0.1
--- tz-art.htm 2007/08/20 14:45:10 2007.7
+++ tz-art.htm 2007/12/27 20:21:17 2007.7.0.1
@@ -365,7 +365,7 @@ or are you trying to dazzle me with your
</li>
<li>
A private jet's mid-flight change of time zones distorts Alison Dubois'
-premonition in the "We Had a Dream" episoed of "Medium"
+premonition in the "We Had a Dream" episode of "Medium"
(originally aired 2007-02-28).
</li>
<li>
===================================================================
RCS file: RCS/tz-link.htm,v
retrieving revision 2007.10
retrieving revision 2007.10.0.1
diff -pu -r2007.10 -r2007.10.0.1
--- tz-link.htm 2007/12/03 14:50:41 2007.10
+++ tz-link.htm 2007/12/27 20:21:17 2007.10.0.1
@@ -8,7 +8,7 @@
<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="2007-11-29">
+<meta name="DC.Date" content="2007-12-26">
<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">
@@ -45,18 +45,18 @@ including
C Library</a> used in
<a href="http://www.linux.org/"><abbr>GNU</abbr>/Linux</a>,
<a href="http://www.freebsd.org/">FreeBSD</a>,
-<a href="http://www.netbsd.org/">NetBSD</a>,
-<a href="http://www.openbsd.org/">OpenBSD</a>,
-<a href="http://www.cygwin.com/">Cygwin</a>,
+<a href="http://netbsd.org/">NetBSD</a>,
+<a href="http://openbsd.org/">OpenBSD</a>,
+<a href="http://cygwin.com/">Cygwin</a>,
<a href="http://www.delorie.com/djgpp/"><abbr
title="DJ's GNU Programming Platform">DJGPP</abbr></a>,
-<a href="http://www.ibm.com/servers/aix/">AIX</a>,
+<a href="http://ibm.com/aix">AIX</a>,
<a href="http://www.apple.com/macosx/">Mac OS X</a>,
<a href="http://h71000.www7.hp.com/">OpenVMS</a>,
-<a href="http://www.oracle.com/database/index.html">Oracle Database</a>,
-<a href="http://www.sun.com/software/solaris/">Solaris</a>,
+<a href="http://oracle.com/database">Oracle Database</a>,
+<a href="http://sun.com/software/solaris">Solaris</a>,
<a href="http://h30097.www3.hp.com/">Tru64</a>, and
-<a href="http://www.sco.com/products/unixware/">UnixWare</a>.</p>
+<a href="http://sco.com/products/unixware">UnixWare</a>.</p>
<p>
Each location in the database represents a national region where all
clocks keeping local time have agreed since 1970.
@@ -79,13 +79,14 @@ implementation set the <code>TZ</code> e
the location's full name, e.g., <code>TZ="America/New_York"</code>.</p>
<p>
In the <code>tz</code> database's
-<a href="ftp://elsie.nci.nih.gov/pub/"><abbr
+<a href="ftp://elsie.nci.nih.gov/pub"><abbr
title="File Transfer Protocol">FTP</abbr> distribution</a>
the code is in the file <code>tzcode<var>C</var>.tar.gz</code>,
where <code><var>C</var></code> is the code's version;
similarly, the data are in <code>tzdata<var>D</var>.tar.gz</code>,
where <code><var>D</var></code> is the data's version.
-The following shell commands download
+The following <a
+href="http://en.wikipedia.org/wiki/Unix_shell">shell</a> commands download
these files to a <abbr>GNU</abbr>/Linux or similar host;
see the downloaded
<code>README</code> file for what to do next.</p>
@@ -102,15 +103,15 @@ location.</p>
The data are by no means authoritative. If you find errors, please
send changes to the <a href="mailto:tz at elsie.nci.nih.gov">time zone
mailing list</a>. You can also <a
-href="http://news.gmane.org/gmane.comp.time.tz/">browse recent
+href="http://news.gmane.org/gmane.comp.time.tz">browse recent
messages</a> sent to the mailing list, <a
href="mailto:tz-request at elsie.nci.nih.gov">subscribe</a> to it,
retrieve the <a
href="ftp://elsie.nci.nih.gov/pub/tzarchive.gz">full archive of old
messages</a> (in gzip compressed format), or retrieve <a
-href="ftp://munnari.oz.au/pub/oldtz/">archived older versions of code
+href="ftp://munnari.oz.au/pub/oldtz">archived older versions of code
and data</a>; there is also a smaller <a
-href="http://public.planetmirror.com/pub/timezone/"><abbr
+href="http://public.planetmirror.com/pub/timezone"><abbr
title="Hypertext Transfer Protocol">HTTP</abbr>
mirror</a>.</p>
<p>
@@ -118,45 +119,47 @@ The Web has several other sources for ti
Here are some recent links that may be of interest.
</p>
<h2>Web pages using recent versions of the <code>tz</code> database</h2>
+<p>
+These are listed roughly in ascending order of complexity and fanciness.
+</p>
<ul>
<li><a href="http://twiki.org/cgi-bin/xtra/tzdatepick.html">Date and Time Gateway</a>
-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>
+lets you see the <code>TZ</code> values directly.</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>
+href="http://convertit.com/Go/ConvertIt/World_Time/Current_Time.ASP">Current
+Time in 1000 Places</a> uses descriptions of the values.</li>
+<li><a href="http://www.timezoneconverter.com/">Time Zone Converter</a>
+uses a pulldown menu.</li>
<li><a href="http://home.tiscali.nl/~t876506/TZworld.html">Complete
-timezone information for all countries</a></li>
-</ul></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
-<code>tz</code>'s.</li>
+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>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 time zone database formats</h2>
<ul>
<li>The <a href="ftp://ftp.rfc-editor.org/in-notes/rfc2445.txt">
Internet Calendaring and Scheduling Core Object Specification
-(iCalendar)</a> specification published by the (now-concluded) <a
-href="http://www.ietf.org/html.charters/OLD/calsch-charter.html"><abbr
+(iCalendar)</a>, Internet <abbr title="Request For
+Comments">RFC</abbr> 2445, published by the (now-concluded) <a
+href="http://ietf.org/html.charters/OLD/calsch-charter.html"><abbr
title="Internet Engineering Task Force">IETF</abbr>
Calendaring and Scheduling Working Group (<abbr
title="Calendaring and Scheduling Working Group">calsch</abbr>)</a>
covers time zone
data; see its VTIMEZONE calendar component.
-The <a href="http://www.calconnect.org/">Calendaring and Scheduling
+The <a href="http://calconnect.org/">Calendaring and Scheduling
Consortium</a> is promoting further work in this area. <a
-href="http://www.calconnect.org/publications/icalendartimezoneproblemsandrecommendationsv1.0.pdf">iCalendar
+href="http://calconnect.org/publications/icalendartimezoneproblemsandrecommendationsv1.0.pdf">iCalendar
TIMEZONE Problems and Recommendations</a> offers guidelines and
recommendations for the use of VTIMEZONE and <code>tz</code>.</li>
-<li><a href="http://www.calconnect.org/dstlinks.shtml">Extended Daylight
+<li><a href="http://calconnect.org/dstlinks.shtml">Extended Daylight
Saving Time Links, Advisories and Changes</a> lists vendor material on recent
daylight saving time changes.</li>
<li><a
-href="http://www.calconnect.org/publications/timezoneregistryandservicerecommendationsv1.0.pdf">Timezone
+href="http://calconnect.org/publications/timezoneregistryandservicerecommendationsv1.0.pdf">Timezone
Registry and Service Recommendations</a> discusses a
strategy for defining and deploying a time zone
registration process that would establish unique names for each
@@ -185,9 +188,9 @@ available under the <a
href="http://www.gnu.org/copyleft/gpl.html"><abbr>GNU</abbr>
General Public License (<abbr
title="General Public License">GPL</abbr>)</a>.</li>
-<li><a href="http://sourceforge.net/projects/tzical/">tziCal - tz
+<li><a href="http://sourceforge.net/projects/tzical">tziCal - tz
database conversion utility</a> is like Vzic, except for the <a
-href="http://msdn.microsoft.com/netframework/">.NET framework</a>.</li>
+href="http://msdn.microsoft.com/netframework">.NET framework</a>.</li>
<li><a
href="http://search.cpan.org/dist/DateTime-TimeZone/">DateTime::TimeZone</a>
contains a script <code>parse_olson</code> that compiles
@@ -212,23 +215,23 @@ 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 <abbr>BSD</abbr>-style license.</li>
-<li><a href="http://sourceforge.net/projects/pytz/">PyTZ - Python Time
+<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>.
+<a href="http://python.org/">Python</a>.
It is freely available under a <abbr>BSD</abbr>-style license.</li>
<li><a href="http://tzinfo.rubyforge.org/">TZInfo - Ruby Timezone Library</a>
compiles <code>tz</code> source into
-<a href="http://www.ruby-lang.org/">Ruby</a>.
+<a href="http://ruby-lang.org">Ruby</a>.
It is freely available under the <abbr
title="Massachusetts Institute of Technology">MIT</abbr> license.</li>
-<li>The <a href="http://www.chronos-st.org/">Chronos Date/Time
-Library</a> is a <a href="http://smalltalk.org/">Smalltalk</a> class
+<li>The <a href="http://chronos-st.org/">Chronos Date/Time
+Library</a> is a <a href="http://smalltalk.org">Smalltalk</a> class
library that compiles <code>tz</code> source into a <a
href="http://date-time-zone.com/">time zone repository</a> whose format
is either proprietary or an <a href="http://www.w3.org/XML/"><abbr
title="Extensible Markup Language">XML</abbr></a>-encoded
representation.</li>
-<li>Starting with version 8.5, <a href="http://www.tcl.tk/">Tcl</a>
+<li>Starting with version 8.5, <a href="http://tcl.tk/">Tcl</a>
contains a developer-oriented parser that compiles <samp>tz</samp>
source into text files, along with a runtime that can read those
files. Tcl is freely available under a <abbr>BSD</abbr>-style
@@ -246,7 +249,7 @@ This library is freely available under t
<abbr>GNU</abbr> Lesser General Public License
(<abbr title="Lesser General Public License">LGPL</abbr>)</a>,
and is widely used in <abbr>GNU</abbr>/Linux systems.</li>
-<li><a href="http://www.bmsi.com/java/#TZ">ZoneInfo.java</a>
+<li><a href="http://bmsi.com/java/#TZ">ZoneInfo.java</a>
is a <code>tz</code> binary file reader written in Java.
It is freely available under the <abbr>LGPL</abbr>.</li>
<li>Tcl, mentioned above, also contains a
@@ -254,12 +257,12 @@ It is freely available under the <abbr>L
</ul>
<h2>Other <code>tz</code>-based time zone software</h2>
<ul>
-<li><a href="http://www.stemhaus.com/firefox/foxclocks/">FoxClocks</a>
+<li><a href="http://stemhaus.com/firefox/foxclocks/">FoxClocks</a>
is an extension for <a
href="http://developer.mozilla.org/en/docs/Toolkit_API">Mozilla
Toolkit</a> applications like <a
-href="http://www.mozilla.com/firefox/">Firefox</a>, <a
-href="http://www.mozilla.com/en-US/thunderbird/">Thunderbird</a>, and
+href="http://mozilla.com/firefox">Firefox</a>, <a
+href="http://mozilla.com/thunderbird">Thunderbird</a>, and
<a
href="http://www.mozilla.org/projects/calendar/sunbird/">Sunbird</a>.
It displays multiple clocks in the application window, and has a mapping
@@ -270,7 +273,7 @@ href="http://users.skynet.be/Peter.Verth
clock (intclock)</a> is a multi-timezone clock for
<abbr>GNU</abbr>/Linux and similar systems. It is freely available
under the <abbr>GPL</abbr>.</li>
-<li><a href="http://www.codeplex.com/publicdomain">PublicDomain</a>
+<li><a href="http://codeplex.com/publicdomain">PublicDomain</a>
has a copy of a recent <code>tz</code> database, accessed via a <a
href="http://en.wikipedia.org/wiki/C_Sharp">C#</a> library. As its
name suggests, it is in the public domain. Only current time stamps
@@ -283,12 +286,12 @@ Java-specific format.</li>
a <a href="http://wordpress.org/">WordPress</a> plugin. It is freely
available under a <abbr>BSD</abbr>-style license.</li>
<li><a
-href="http://www.veladg.com/velaterra.html">VelaTerra</a> is
+href="http://veladg.com/velaterra.html">VelaTerra</a> is
a Mac OS X program. Its developers
-<a href="http://www.veladg.com/tzoffer.html">offer free
+<a href="http://veladg.com/tzoffer.html">offer free
licenses</a> to <code>tz</code> contributors.</li>
<li><a
-href="http://www.worldtimeexplorer.com/index.html">World Time Explorer</a> is a
+href="http://worldtimeexplorer.com/">World Time Explorer</a> is a
Microsoft Windows program.</li>
</ul>
<h2>Other time zone databases</h2>
@@ -307,15 +310,15 @@ href="http://astrocom.com/">Astro Commun
time info, public holidays</a>
contains information on local time, sunrise and sunset,
and public holidays in several hundred cities around the world.</li>
-<li><a href="http://www.worldtimeserver.com/">World Time Server</a>
+<li><a href="http://worldtimeserver.com/">World Time Server</a>
is another time zone database.</li>
<li><a href="http://tycho.usno.navy.mil/tzones.html">World Time Zones</a>
contains data from the Time Service Department of the
<abbr>US</abbr> Naval Observatory, used as the source
for the <code>usno*</code> files in the <code>tz</code> distribution.</li>
-<li>The <a href="http://www.iata.org/ps/publications/9179.htm">Standard
+<li>The <a href="http://iata.org/ps/publications/SSIM.htm">Standard
Schedules Information Manual</a> of the
-<a href="http://www.iata.org/index.htm">International Air Transport
+<a href="http://iata.org/index.htm">International Air Transport
Association</a>
gives current time zone rules for airports served by commercial aviation.</li>
<li>Some Microsoft Windows versions contain time zone information in
@@ -350,11 +353,11 @@ but the maps are more up to date.</li>
</ul>
<h2>Time zone boundaries</h2>
<ul>
-<li><a href="http://www.efele.net/maps/">A map of the TZ timezones in
+<li><a href="http://efele.net/maps/">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>
-<li><a href="http://www.statoids.com/statoids.html">Administrative Divisions
+<li><a href="http://statoids.com/statoids.html">Administrative Divisions
of Countries ("Statoids")</a> contains detailed lists of
<code>tz</code>-related zone subdivision data.</li>
<li><a href="http://home.tiscali.nl/~t876506/Multizones.html">Time
@@ -391,9 +394,9 @@ surveys the evolution of timekeeping.</l
<li><a href="http://webexhibits.org/daylightsaving/">About Daylight
Saving Time - History, rationale, laws & dates</a>
is an overall history of <abbr>DST</abbr>.</li>
-<li><a href="http://www.energy.ca.gov/daylightsaving.html">Saving Time,
+<li><a href="http://energy.ca.gov/daylightsaving.html">Saving Time,
Saving Energy</a> discusses a primary justification for <abbr>DST</abbr>.</li>
-<li><a href="http://www.seizethedaylight.com/dst/">Who Knew? A Brief
+<li><a href="http://seizethedaylight.com/dst/">Who Knew? A Brief
History of Daylight Saving Time</a> summarizes some of the contentious
history of <abbr>DST</abbr>.</li>
<li><a href="http://toi.iriti.cnr.it/">The
@@ -404,7 +407,7 @@ The time zone map is out of date, howeve
<li><a href="http://www.phys.uu.nl/~vgent/idl/idl.htm">A History of
the International Date Line</a> tells the story of the most important
time zone boundary.</li>
-<li><a href="http://www.statoids.com/tconcept.html">Basic Time
+<li><a href="http://statoids.com/tconcept.html">Basic Time
Zone Concepts</a> discusses terminological issues behind time zones.</li>
</ul>
<h2>National histories of legal time</h2>
@@ -428,9 +431,7 @@ 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_saving_e.html">Time
-Zones & Daylight Saving Time</a>.
-<a href="http://www3.sympatico.ca/c.walton/canada_dst.html">Canadian
-Daylight Saving Regulations</a> summarizes changes for 2007.</dd>
+Zones & Daylight Saving Time</a>.</dd>
<dt>Chile</dt>
<dd>The Chilean Hydrographic and Oceanographic Service publishes a <a
href="http://www.horaoficial.cl/horaof.htm" hreflang="es"> history of
@@ -441,7 +442,7 @@ href="http://www.ptb.de/en/org/4/44/441/
Legal Time in Germany</a>.</dd>
<dt>Israel</dt>
<dd>The Interior Ministry periodically issues <a
-href="ftp://ftp.cs.huji.ac.il/pub/tz/announcements/"
+href="ftp://ftp.cs.huji.ac.il/pub/tz/announcements"
hreflang="he">announcements (in Hebrew)</a>.</dd>
<dt>Mexico</dt>
<dd>The Investigation and Analysis Service of the Mexican Library of
@@ -456,9 +457,9 @@ hreflang="nl">Legal time in the Netherla
covers the history of local time in the Netherlands from ancient times.</dd>
<dt>New Zealand</dt>
<dd>The Department of Internal Affairs maintains a brief history <a
-href="http://www.dia.govt.nz/diawebsite.nsf/wpg_URL/Resource-material-Information-We-Provide-About-Daylight-Saving">About
+href="http://dia.govt.nz/diawebsite.nsf/wpg_URL/Resource-material-Information-We-Provide-About-Daylight-Saving">About
Daylight Saving</a>. The privately-maintained <a
-href="http://www.astrologyschool.com/nztime.html">History of New Zealand
+href="http://astrologyschool.com/nztime.html">History of New Zealand
time</a> has more details.</dd>
<dt>Norway</dt>
<dd>The Norwegian Meteorological Institute lists
@@ -491,8 +492,9 @@ Time Protocol</a>
discusses how to synchronize clocks of
Internet hosts.</li>
<li><a
-href="ftp://ftp.rfc-editor.org/in-notes/rfc4833.txt">A
-Timezone Option for <abbr title="Dynamic Host Configuration Protocol">DHCP</abbr></a>
+href="ftp://ftp.rfc-editor.org/in-notes/rfc4833.txt">Timezone
+Options for <abbr title="Dynamic Host Configuration Protocol">DHCP</abbr></a>
+(Internet <abbr>RFC</abbr> 4833)
specifies a <a
href="http://www.dhcp.org/">DHCP</a> option for a server to configure
a client's time zone and daylight saving settings automatically.</li>
@@ -510,7 +512,7 @@ Times</a> explains more abstruse astrono
<abbr title="Barycentric Dynamic Time">TDB</abbr>.
<a href="http://www.ucolick.org/~sla/leapsecs/timescales.html">Time
Scales</a> goes into more detail, particularly for historical variants.</li>
-<li>The <a href="http://www.iau.org/"><abbr
+<li>The <a href="http://iau.org/"><abbr
title="International Astronomical Union">IAU</abbr></a>'s <a
href="http://www.iau-sofa.rl.ac.uk/"><abbr
title="Standards Of Fundamental Astronomy">SOFA</abbr></a>
@@ -519,7 +521,7 @@ code for converting among time scales li
<abbr title="International Atomic Time">TAI</abbr>,
<abbr>TDB</abbr>, <abbr>TDT</abbr> and
<abbr>UTC</abbr>.</li>
-<li><a href="http://www.jpl.nasa.gov/basics/bsf2-3.htm">Basics of
+<li><a href="http://jpl.nasa.gov/basics/bsf2-3.htm">Basics of
Space Flight - Reference Systems - Time Conventions</a>
briefly explains interplanetary space flight timekeeping.</li>
<li><a
@@ -529,7 +531,7 @@ describes Mars Coordinated Time (<abbr
title="Mars Coordinated Time">MTC</abbr>) and the
diverse local time
scales used by each landed mission on Mars.</li>
-<li><a href="http://www.leapsecond.com/">LeapSecond.com</a> is
+<li><a href="http://leapsecond.com/">LeapSecond.com</a> is
dedicated not only to leap seconds but to precise time and frequency
in general. It covers the state of the art in amateur timekeeping, and
how the art has progressed over the past few decades.</li>
@@ -543,15 +545,14 @@ the Earth Orientation Parameters Product
International Earth Rotation Service, the committee that decides
when leap seconds occur.</li>
<li>The <a
-href="http://www.mail-archive.com/leapsecs@rom.usno.navy.mil/">Leap
-Second Discussion List</a> and <a
-href="http://rom.usno.navy.mil/archives/leapsecs.html">archive</a> covers <a
+href="http://six.pairlist.net/mailman/listinfo/leapsecs">Leap
+Second Discussion List</a> covers <a
href="http://gauss.gge.unb.ca/papers.pdf/gpsworld.november99.pdf">McCarthy
and Klepczynski's proposal to discontinue leap seconds</a>,
discussed further in
<a href="http://www.cl.cam.ac.uk/~mgk25/time/metrologia-leapsecond.pdf">The
leap second: its history and possible future</a>.
-The <a href="http://www.aas.org/policy/LeapSecondCommittee.html"><abbr
+The <a href="http://aas.org/policy/LeapSecondCommittee.html"><abbr
title="American Astronomical Society">AAS</abbr> Leap Second
Committee</a> has solicited input on this proposal.
<a href="http://www.ucolick.org/~sla/leapsecs/">The
@@ -574,14 +575,15 @@ interchange -- Representation of dates a
Schema: Datatypes - dateTime</a> specifies a format inspired by
<abbr>ISO</abbr> 8601 that is in common use in XML data.</li>
<li>
-<a href="ftp://ftp.rfc-editor.org/in-notes/rfc2822.txt">Internet <abbr
-title="Request For Comments">RFC</abbr> 2822</a> §3.3
+<a href="ftp://ftp.rfc-editor.org/in-notes/rfc2822.txt">Internet
+Message Format</a> (Internet <abbr>RFC</abbr> 2822) §3.3
specifies the time notation used in email and <a
href="ftp://ftp.rfc-editor.org/in-notes/rfc2616.txt"><abbr>HTTP</abbr></a>
headers.</li>
<li>
-<a href="ftp://ftp.rfc-editor.org/in-notes/rfc3339.txt">Internet
-<abbr>RFC</abbr> 3339</a> specifies an <abbr>ISO</abbr> 8601
+<a href="ftp://ftp.rfc-editor.org/in-notes/rfc3339.txt">Date and Time
+on the Internet: Timestamps</a> (Internet <abbr>RFC</abbr> 3339)
+specifies an <abbr>ISO</abbr> 8601
profile for use in new Internet
protocols.</li>
<li>
@@ -589,7 +591,7 @@ protocols.</li>
Formats on the Web</a> surveys web- and Internet-oriented date and time
formats.</li>
<li>
-<a href="http://www.exit109.com/~ghealton/y2k/yrexamples.html">The
+<a href="http://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>The <a
@@ -599,7 +601,7 @@ abbreviations, identifiers, and formats.
French translations for "Eastern European Summer Time", "<abbr
title="Eastern European Summer Time">EEST</abbr>", and
"Bucharest". <a
-href="http://www.unicode.org/cldr/data/charts/by_type/names.metazone.html">By-Type
+href="http://unicode.org/cldr/data/charts/by_type/names.metazone.html">By-Type
Chart: names.metazone</a> shows these values for many locales.
<abbr>ICU</abbr> contains a mechanism for using this data.</li>
<li>Alphabetic time zone abbreviations should not be used as unique
@@ -632,11 +634,11 @@ is called "<abbr>GMT</abbr>".</li>
<h2>Related indexes</h2>
<ul>
<li><a href="tz-art.htm">Time and the Arts</a></li>
-<li><a href="http://dmoz.org/Reference/Time/">Open Directory -
+<li><a href="http://www.dmoz.org/Reference/Time/">Open Directory -
Reference: Time</a></li>
<li><a href="http://directory.google.com/Top/Reference/Time/">Google Directory
- Reference > Time</a></li>
-<li><a href="http://dir.yahoo.com/Science/Measurements_and_Units/Time/">Yahoo!
+<li><a href="http://dir.yahoo.com/Science/Measurements_and_Units/Time">Yahoo!
Directory > Science > Measurements and Units > Time</a></li>
</ul>
</body>
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