proposed tz changes for Brazil, East Timor, etc.

Paul Eggert eggert at
Thu Oct 10 23:09:18 UTC 2002

It's getting to be that time of year again.  Here is a list of proposed changes to the tz data.  The most urgent change is for Brazil, since the tz2002c is incorrect starting this weekend.

The following change affects the time zone data proper:

 * Contrary to tz2000c, Brazil does _not_ change its clocks this
   weekend.  Instead, it does so on November 3.  (Thanks to Celso
   Doria via David Madeo.)

   The Brazilian web site <> does not
   have the new decree yet, so for now I'll guess that the set of
   states observing DST has not changed.

The following change affects time zone setup, but not the time zone data

 * East Timor's country code changed from TP to TL.

The following changes are commentary only:

 * This year's time zone change in Israel that didn't happen.
   (Thanks to Ephraim Silverberg.)

 * The time zone situation in Madura, Mundrabilla and Eucla, Australia.
   (Thanks to Rives McDow.)

 * Typographical error fixed for Argentina time zone offset in comment.

 * Many updates to tz-link.htm, principally to reflect other web pages
   that have moved or vanished.

Thanks again to everyone who has contributed, and my apologies if I've lost changes (please send them again!).

RCS file: RCS/asia,v
retrieving revision 2002.3
retrieving revision 2002.3.1.1
diff -pu -r2002.3 -r2002.3.1.1
--- asia	2002/04/04 16:55:19	2002.3
+++ asia	2002/10/10 22:59:59	2002.3.1.1
@@ -727,6 +727,46 @@ Zone	Asia/Jerusalem	2:20:56 -	LMT	1880
 			2:20:40	-	JMT	1918	# Jerusalem Mean Time?
 			2:00	Zion	I%sT
+# From Ephraim Silverberg (2002-07-07):
+# The Israeli government today adopted a proposal by Minister of 
+Interior # Eli Yishai to shorten the period of Daylight Savings Time 
+for the year # 2002 (only -- the dates for 2003 and 2004 are, so far, 
+unaffected). # # The proposed date to Daylight Savings Time is 
+September 13, 2002 instead # of the current date: October 7, 2002.  The 
+hour of changeover has not # yet been decided.
+# (2002-07-10):
+# While today the Knesset passed the initial proposal to reduce DST by
+# some three weeks, a new compromise is being worked out between
+# Minister of Justice Meir Sheetrit and Minister of Interior Eli
+# Yishai to revert to standard time for a period of 48-96 _hours_
+# (sic) around the Yom Kippur fast day (September 15-16) and then go
+# *back* to DST until the end of October.  The details of the proposal
+# have yet to be worked out, but the second and final readings of the
+# bill have until July 24 to pass.
+# (2002-07-25):
+# Thanks go to Yitschak Goldberg from E&M for bringing this (Hebrew) article 
+# to my attention:
+# Hence, the proposal to shorten DST was withdrawn yesterday and the timezone
+# files that have been in effect since July 2000 are still valid for all of
+# 2002.
+# Please note that the article mentions that the Shas MK's intend to
+# bring up their amendment for future years (2003 and beyond).  What this
+# means exactly is anyone's guess since there are no set dates yet beyond
+# 2004 and the end day set for 2003 and 2004 is already the 7th of Tishrei
+# (i.e. before the fast of Yom Kippur).  The only thing they may want to
+# change is the start date of DST in 2003 from Mar.28.03 (24th of Adar II)
+# to Apr.18.03 (16th of Nisan) so that the Passover Seder will take place
+# during Standard Time.  The start date for 2004 is already Nisan 16th.
RCS file: RCS/australasia,v
retrieving revision 2002.2
retrieving revision 2002.2.1.1
diff -pu -r2002.2 -r2002.2.1.1
--- australasia	2002/01/28 17:56:02	2002.2
+++ australasia	2002/10/10 22:59:59	2002.2.1.1
@@ -738,6 +738,38 @@ Zone	Pacific/Wallis	12:15:20 -	LMT	1901
 # From Arthur David Olson (1992-03-08):
 # The chosen rules the union of the 1971/1972 change and the 1989-1992 changes.
+# From Rives McDow (2002-04-09):
+# The most interesting region I have found consists of three towns on 
+# southern coast of Australia, population 10 at last report, along with 
+# 50,000 sheep, about 100 kilometers long and 40 kilometers into the 
+# continent.  The primary town is Madura, with the other towns being 
+# Mundrabilla and Eucla.  According to the sheriff of Madura, the 
+# residents got tired of having to change the time so often, as they are 
+# located in a strip overlapping the border of South Australia and Western 
+# Australia.  South Australia observes daylight saving time; Western 
+# Australia does not.  The two states are one and a half hours apart.  The 
+# residents decided to forget about this nonsense of changing the clock so 
+# much and set the local time 20 hours and 45 minutes from the 
+# international date line, or right in the middle of the time of South 
+# Australia and Western Australia.  As it only affects about 10 people and 
+# tourists staying at the Madura Motel, it has never really made as big an 
+# impact as Broken Hill.  However, as tourist visiting there or anyone 
+# calling the local sheriff will attest, they do keep time in this way.
+# From Paul Eggert (2002-04-09):
+# This is confirmed by the section entitled
+# "What's the deal with time zones???" in
+# <>,
+# which says a few other things:
+# * Border Village, SA also is 45 minutes ahead of Perth.
+# * The locals call this time zone "central W.A. Time" (presumably "CWAT").
+# * The locals also call Western Australia time "Perth time".
+# It's not clear from context whether everyone in Western Australia
+# knows of this naming convention, or whether it's just the people in
+# this subregion.
 # South Australia, Tasmania, Victoria
 # From Arthur David Olson (1992-03-08):
RCS file: RCS/,v
retrieving revision 2002.2
retrieving revision 2002.2.1.1
diff -pu -r2002.2 -r2002.2.1.1
---	2002/01/28 17:56:02	2002.2
+++	2002/10/10 22:59:59	2002.2.1.1
@@ -1,17 +1,18 @@
-# ISO 3166 2-letter country codes
+# ISO 3166 alpha-2 country codes
 # @(#)	1.9
-# From Paul Eggert <eggert at> (1999-10-13):
+# From Paul Eggert <eggert at> (2002-05-28):
 # This file contains a table with the following columns:
-# 1.  ISO 3166-1:1999 2-character country code.  See:
-#	<a href="">
-#	ISO 3166-1: The Code List
-#	</a>.
+# 1.  ISO 3166-1 alpha-2 country code, current as of
+#     ISO 3166-1 Newsletter No. V-5 (2002-05-20).  See:
+#     <a href="">
+#     ISO 3166 Maintenance agency (ISO 3166/MA)
+#     </a>.
 # 2.  The usual English name for the country,
-#	chosen so that alphabetic sorting of subsets produces helpful lists.
-#	This is not the same as the English name in the ISO 3166 tables.
+#     chosen so that alphabetic sorting of subsets produces helpful lists.
+#     This is not the same as the English name in the ISO 3166 tables.
 # Columns are separated by a single tab.
 # The table is sorted by country code.
@@ -93,7 +94,7 @@ FM	Micronesia
 FO	Faeroe Islands
 FR	France
 GA	Gabon
-GB	Britain (UK)
+GB	Britain
 GD	Grenada
 GE	Georgia
 GF	French Guiana
@@ -229,10 +230,10 @@ TG	Togo
 TH	Thailand
 TJ	Tajikistan
 TK	Tokelau
+TL	East Timor
 TM	Turkmenistan
 TN	Tunisia
 TO	Tonga
-TP	East Timor
 TR	Turkey
 TT	Trinidad & Tobago
 TV	Tuvalu
RCS file: RCS/southamerica,v
retrieving revision 2002.3
retrieving revision 2002.3.1.1
diff -pu -r2002.3 -r2002.3.1.1
--- southamerica	2002/04/04 16:55:20	2002.3
+++ southamerica	2002/10/10 22:59:59	2002.3.1.1
@@ -174,7 +174,7 @@ Zone America/Buenos_Aires -3:53:48 -	LMT
 # Shanks also makes the following claims, which we haven't verified:  # - Formosa switched to -3:00 on 1991-01-07.  # - La Rioja and San Juan switched to -4:00 on 1991-03-01
-#   and then to 03:00 on 1991-05-07.
+#   and then to -3:00 on 1991-05-07.
 # - Misiones switched to -3:00 on 1990-12-29.
 # - Chaco switched to -3:00 on 1991-01-04.
 # - San Luis switched to -4:00 on 1990-03-14, then to -3:00 on 1990-10-15,
@@ -428,8 +428,42 @@ Rule	Brazil	2000	only	-	Feb	27	 0:00	0	-
 # For dates after mid-2002, the following rules are guesses
 # and are quite possibly wrong, but are more likely than no DST at all.
-Rule	Brazil	2000	max	-	Oct	Sun>=8	 0:00	1:00	S
+Rule	Brazil	2000	2001	-	Oct	Sun>=8	 0:00	1:00	S
 Rule	Brazil	2001	max	-	Feb	Sun>=15	 0:00	0	-
+# From Celso Doria via David Madeo (2002-10-09):
+# Yesterday, the local Brazilian authorities signed a decree stating 
+that the # Brazilian daylight saving period will start on November 3rd 
+2002 and will # last until February 16th 2003. #
+# So, clocks will be set one hour forward on November 3rd (12:00 a.m. will be
+# changed to 1:00 a.m.) and at midnight (0:00 am) on February 16th,  Brazil
+# will adjust its clocks back one hour (23:00 pm on Feb 15th) marking the
+# end.
+# The reason for the delay this year has to do with elections in Brazil.
+# Unlike in the United States, elections in Brazil are 100% computerized and
+# the results are known almost immediately.  Yesterday,  it was the first
+# round of the elections when 115 million Brazilians voted for  President,
+# Governor,  Senators, Federal Deputies, and State Deputies. Nobody is
+# counting (or re-counting) votes anymore and we know there will be a second
+# round for the Presidency and also for some Governors. The 2nd round will
+# take place on October 27th.
+# The reason why the DST will only begin November 3rd is that the thousands
+# of electoral machines used cannot have their time changed, and since the
+# Constitution says the elections must begin at 8:00 AM and end at 5:00 PM ,
+# the Government decided to postpone DST, instead of changing the
+# Constitution (maybe, for the next elections, it will be possible to change
+# the clock)...
+Rule	Brazil	2002	only	-	Nov	 3	 0:00	1:00	S
+Rule	Brazil	2003	max	-	Oct	Sun>=8	 0:00	1:00	S
+# For dates after mid-2003, the above rules with TO="max" are guesses
+# and are quite possibly wrong, but are more likely than no DST at all.
RCS file: RCS/tz-link.htm,v
retrieving revision 2002.3
retrieving revision 2002.3.1.2
diff -pu -r2002.3 -r2002.3.1.2
--- tz-link.htm	2002/04/04 16:55:20	2002.3
+++ tz-link.htm	2002/10/10 23:08:31	2002.3.1.2
@@ -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="2002-03-26" />
+<meta name="DC.Date" content="2002-10-10" />
 <meta name="DC.Description"
  content="Sources of information about time zones and daylight saving time" />  <meta name="DC.Identifier" content="" /> @@ -35,15 +35,16 @@ to UTC offsets and daylight-saving rules  This database (often called <code>tz</code> or <code>zoneinfo</code>)  is used by several implementations,  including
+<a href="">the GNU C Library</a> used 
 <a href="">GNU/Linux</a>,
 <a href="">FreeBSD</a>,
 <a href="">NetBSD</a>,
 <a href="">OpenBSD</a>,
 <a href="">DJGPP</a>,
-<a href="">HP-UX</a>,
+<a href="">HP-UX</a>,
 <a href="">IRIX</a>,
-<a href="">Open UNIX</a>, -<a href="">Solaris</a>, and
+<a href="">Open 
+UNIX/UnixWare</a>, <a 
+href="">Solaris</a>, and
 <a href="">Tru64</a>.</p>
 Each location in the database represents a national region where all @@ -119,7 +120,7 @@ is a web interface to a time zone databa  <li><a href="">Olson ->  VTIMEZONE Converter</a> describes a program Vzic that  compiles <code>tz</code> source into VTIMEZONE text as specified by -the <a href="">iCalendar</a>
+the <a 
 specification published by the <a  href="">IETF
 Calendaring and Scheduling Working Group</a>. Vzic is freely @@ -131,8 +132,8 @@ href="
 <a  href="">another</a>
 used by the <a -href="">iPlanet
-Calendar Server</a>.</li>
+ONE Calendar Server</a>.</li>
 <h2>Other <code>tz</code> binary file readers</h2>
@@ -153,15 +154,15 @@ It is freely available under the GNU LGP  href="">HyperCard
 time zones calculator</a> is a HyperCard stack.</li>
-href="">Time Zone Converter</a> is a
+href="">Time Zone Converter</a> is a
 Microsoft Windows program.</li>
 <h2>Other time zone databases</h2>
-<li><a href="">Astrodienst
 - Atlas Query</a> is Astrodienst's Web version of Shanks's  excellent time zone history atlases published in both <a -href="">computer</a> and <a
+href="">computer</a> and <a
 href="">book</a> form by <a  href="">Astro Communications Services</a>.</li>  <li><a href="">WORLDTIME: interactive atlas, @@ -215,18 +216,17 @@ Time Zones</a> publishes the same data i  <li>The US Geological Survey's National Atlas of the United States  publishes the <a href="">Time
 Zones of the United States</a> in the public domain.</li> -<li>The National Weather Service publishes <a -href="">outlines
-of US counties and their time zones</a> in the public domain.</li>  <li>The GeoCommunity lists several commercial sources for <a  href="">International
 Time Zones and Time Zone Data</a>.</li>
 <h2>Daylight saving time concepts and history</h2>
+<li><a href="">A Walk through Time</a> 
+surveys the evolution of timekeeping.</li>
 <li><a href="">About Daylight  Saving Time - History, rationale, laws and dates</a> -is a good overall history of DST.</li>
+is an overall history of DST.</li>
 <li><a href="">The
 Time of Internet</a>
 describes time zones and daylight saving time,
@@ -276,10 +276,10 @@ covers the history of local time in the 
 <dt>United Kingdom</dt>
 <dd><a  href="">History of -legal time in Britain</a> is an excellent discussion for the country
+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="">archive
 of summer time dates</a>.</dd>
@@ -287,7 +287,7 @@ of summer time dates</a>.</dd>
 <li><a  href="">The
-Science of Timekeeping</a> is an excellent and thorough introduction
+Science of Timekeeping</a> is a thorough introduction
 to the theory and practice of precision timekeeping.</li>  <li><a href="">Time Synchronization Server</a> discusses  the Network Time Protocol (NTP), used to synchronize clocks of @@ -297,7 +297,7 @@ charset="macintosh">A  Few Facts Concerning GMT, UT, and the RGO</a>  answers questions like "What is the difference between GMT and UTC?"</li>  <li><a -href="">Astronomical
 Times</a> explains more abstruse astronomical time scales like TT, TCG,  and TDB.</li>  <li>The <a href="">IAU</a>'s <a @@ -314,7 +314,7 @@ the Earth Orientation Parameters Product  International Earth Rotation Service, the committee that decides  when leap seconds occur.</li>  <li>The <a -href="">Leap
 Second Discussion List</a> covers <a  href="">McCarthy
 and Klepczynski's proposal to discontinue leap seconds</a>.
@@ -331,17 +331,20 @@ the International Standard Date and Time  summary of ISO  8601:1988 - Data elements and interchange formats - Information interchange
 - Representation of dates and times (which has been superseded by -<a href="">ISO 8601:2000</a>).</li>
+href="">ISO 8601:2000</a>).</li>
 Section 3.3 of <a -href="">Internet RFC 2822</a>
+href="">Internet RFC 
 specifies the time notation used in email and <a -href="">HTTP</a> headers.</li>
-<a -href="">Date
-and Time on the Internet: Timestamps</a> proposes an ISO 8601 profile -for use in new Internet protocols.</li>
+<a href="">Internet RFC 
+3339</a> specifies an ISO 8601 profile for use in new Internet 
+protocols.</li> <li>
+<a href="">The
+Best of Dates, the Worst of Dates</a> covers many problems encountered
+by software developers when handling dates and time stamps.</li>
 Alphabetic time zone abbreviations should not be used as unique  identifiers for UTC offsets as they are ambiguous in practice. For
RCS file: RCS/,v
retrieving revision 2002.3
retrieving revision 2002.3.1.1
diff -pu -r2002.3 -r2002.3.1.1
---	2002/04/04 16:55:20	2002.3
+++	2002/10/10 22:59:59	2002.3.1.1
@@ -339,10 +339,10 @@ TG	+0608+00113	Africa/Lome
 TH	+1345+10031	Asia/Bangkok
 TJ	+3835+06848	Asia/Dushanbe
 TK	-0922-17114	Pacific/Fakaofo
+TL	-0833+12535	Asia/Dili
 TM	+3757+05823	Asia/Ashgabat
 TN	+3648+01011	Africa/Tunis
 TO	-2110+17510	Pacific/Tongatapu
-TP	-0833+12535	Asia/Dili
 TR	+4101+02858	Europe/Istanbul
 TT	+1039-06131	America/Port_of_Spain
 TV	-0831+17913	Pacific/Funafuti

More information about the tz mailing list