proposed tz chagnes for Cuba and Chile
Paul Eggert
eggert at CS.UCLA.EDU
Tue Oct 31 08:47:54 UTC 2006
mike castleman <m at mlcastle.net> writes:
> AT 1:00 a.m. on Sunday, October 29, the clocks in Cuba were put back one hour
Thanks for reminding me about that. The current tz database is now
incorrect for Cuba, so we should put out a new version. Here is a
proposed patch reflecting all the changes that I have pending.
* Changes affecting current and future time stamps.
Cuba has ended its three years of permanent DST.
(Thanks to Jesper Norgaard Welen for this.)
* Changes affecting past time stamps.
Many transitions in Chile from 1918 through 1998 have been updated
to reflect <http://www.horaoficial.cl/horaof.htm>. (Thanks to
Jesper Norgaard Welen for this.) This also affects Palmer base
in Antarctica. I also updated some incorrect rules for use of
Argentina daylight saving rules at Palmer before 1982.
* Changes affecting commentary only.
The URLs for Paraguay's daylight saving decress have been updated.
(Thanks to Jesper Norgaard Welen and Carlos Raul Perasso for this.)
* Changes affecting the web page.
Add a pointer to <http://www3.sympatico.ca/c.walton/canada_dst.html>.
Use Chilean Hydrographic and Oceanographic Service website instead of
Webexhibits copy.
===================================================================
RCS file: RCS/northamerica,v
retrieving revision 2006.14
retrieving revision 2006.14.0.1
diff -pu -r2006.14 -r2006.14.0.1
--- northamerica 2006/10/10 15:31:46 2006.14
+++ northamerica 2006/10/31 08:33:52 2006.14.0.1
@@ -2096,10 +2096,13 @@ Zone America/Costa_Rica -5:36:20 - LMT 1
# adjustment in Cuba. We will stay in daylight saving time:
# http://www.granma.cu/espanol/2005/noviembre/mier9/horario.html
-# From Steffen Thorsen (2006-08-17):
-# It is likely that they are not reverting back to standard time this
-# year either, based on the number of responses I have got from users
-# (when my site claimed Cuba will end DST on lastSun/October)
+# From Jesper Norgaard Welen (2006-10-21):
+# An article in GRANMA INTERNACIONAL claims that Cuba will end
+# the 3 years of permanent DST next weekend, see
+# http://www.granma.cu/ingles/2006/octubre/lun16/43horario.html
+# "On Saturday night, October 28 going into Sunday, October 29, at 01:00,
+# watches should be set back one hour -- going back to 00:00 hours -- returning
+# to the normal schedule....
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Cuba 1928 only - Jun 10 0:00 1:00 D
@@ -2131,7 +2134,7 @@ Rule Cuba 1997 only - Oct 12 0:00s 0 S
Rule Cuba 1998 1999 - Mar lastSun 0:00s 1:00 D
Rule Cuba 1998 2003 - Oct lastSun 0:00s 0 S
Rule Cuba 2000 max - Apr Sun>=1 0:00s 1:00 D
-Rule Cuba 2007 max - Oct lastSun 0:00s 0 S
+Rule Cuba 2006 max - Oct lastSun 0:00s 0 S
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/Havana -5:29:28 - LMT 1890
===================================================================
RCS file: RCS/southamerica,v
retrieving revision 2006.14
retrieving revision 2006.14.0.1
diff -pu -r2006.14 -r2006.14.0.1
--- southamerica 2006/10/10 15:31:29 2006.14
+++ southamerica 2006/10/31 08:33:52 2006.14.0.1
@@ -704,53 +704,64 @@ Zone America/Rio_Branco -4:31:12 - LMT 1
# Because of the same drought, the government decided to end DST later,
# on April 3, (one-time change).
-# From Gwillim Law (2001-05-04):
-# I came across another article in "La Tercera" about Chilean DST.
-# <http://www.tercera.cl/diario/2000/10/13/t-extras.html>
-# It clearly confirms my earlier suggestion, that DST begins at 22:00
-# on Easter Island.... But it also seems to be saying that the
-# observance of DST in Chile began in 1966, rather than 1969 as
-# ... [Shanks & Pottenger have] it....
-#
-# My translation:
-#
-# "The Chilean Army has announced that summer time will begin tomorrow,
-# Saturday, October 14 in continental Chile, insular Chile, and
-# Antarctica, as provided by Supreme Decree 25 of January 11, 1966.
-# By the preceding, official time in continental Chile and Chilean
-# Antarctic, and official time in Western Insular Chile, which applies
-# to Easter Island and Sala y Gomez Island, will be set forward at
-# midnight and at 22:00, respectively, by 20 minutes."
+# From Oscar van Vlijmen (2006-10-08):
+# http://www.horaoficial.cl/cambio.htm
-# From Paul Eggert (2006-03-22):
-# Go with Law in preference to Shanks & Pottenger's 1969 date for modern DST.
-# Assume this rule has been used since DST was introduced in the islands.
+# From Jesper Norgaard Welen (2006-10-08):
+# I think that there are some obvious mistakes in the suggested link
+# from Oscar van Vlijmen,... for instance entry 66 says that GMT-4
+# ended 1990-09-12 while entry 67 only begins GMT-3 at 1990-09-15
+# (they should have been 1990-09-15 and 1990-09-16 respectively), but
+# anyhow it clears up some doubts too.
-# From Paul Eggert (2002-10-24):
-# <http://www.shoa.cl/shoa/faqhoraoficial.htm> gives many details that
-# disagree with the following table, but we haven't had time to compare them.
+# The following data are from <http://www.horaoficial.cl/horaof.htm>
+# (2006-09-20), transcribed by Jesper Norgaard Welen.
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
-Rule Chile 1918 only - Sep 1 0:00 1:00 S
-Rule Chile 1919 only - Jul 2 0:00 0 -
-Rule Chile 1927 1931 - Sep 1 0:00 1:00 S
+Rule Chile 1927 1932 - Sep 1 0:00 1:00 S
Rule Chile 1928 1932 - Apr 1 0:00 0 -
-Rule Chile 1966 1997 - Oct Sun>=9 4:00u 1:00 S
-Rule Chile 1967 1998 - Mar Sun>=9 3:00u 0 -
+Rule Chile 1942 only - Jun 1 4:00u 0 -
+Rule Chile 1942 only - Aug 1 5:00u 1:00 S
+Rule Chile 1946 only - Jul 15 4:00u 1:00 S
+Rule Chile 1946 only - Sep 1 3:00u 0:00 -
+Rule Chile 1947 only - Apr 1 4:00u 0 -
+Rule Chile 1968 only - Nov 3 4:00u 1:00 S
+Rule Chile 1969 only - Mar 30 3:00u 0 -
+Rule Chile 1969 only - Nov 23 4:00u 1:00 S
+Rule Chile 1970 only - Mar 29 3:00u 0 -
+Rule Chile 1971 only - Mar 14 3:00u 0 -
+Rule Chile 1970 1972 - Oct Sun>=9 4:00u 1:00 S
+Rule Chile 1972 1986 - Mar Sun>=9 3:00u 0 -
+Rule Chile 1973 only - Sep 30 4:00u 1:00 S
+Rule Chile 1974 1987 - Oct Sun>=9 4:00u 1:00 S
+Rule Chile 1987 only - Apr 12 3:00u 0 -
+Rule Chile 1988 1989 - Mar Sun>=9 3:00u 0 -
+Rule Chile 1988 only - Oct Sun>=1 4:00u 1:00 S
+Rule Chile 1989 only - Oct Sun>=9 4:00u 1:00 S
+Rule Chile 1990 only - Mar 18 3:00u 0 -
+Rule Chile 1990 only - Sep 16 4:00u 1:00 S
+Rule Chile 1991 1996 - Mar Sun>=9 3:00u 0 -
+Rule Chile 1991 1997 - Oct Sun>=9 4:00u 1:00 S
+Rule Chile 1997 only - Mar 30 3:00u 0 -
+Rule Chile 1998 only - Mar Sun>=9 3:00u 0 -
Rule Chile 1998 only - Sep 27 4:00u 1:00 S
Rule Chile 1999 only - Apr 4 3:00u 0 -
Rule Chile 1999 max - Oct Sun>=9 4:00u 1:00 S
Rule Chile 2000 max - Mar Sun>=9 3:00u 0 -
-# IATA SSIM anomalies: (1990-09) says 1990-09-16; (1992-02) says 1992-03-14;
+# IATA SSIM anomalies: (1992-02) says 1992-03-14;
# (1996-09) says 1998-03-08. Ignore these.
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone America/Santiago -4:42:40 - LMT 1890
- -4:42:40 - SMT 1910 # Santiago Mean Time
- -5:00 Chile CL%sT 1932 Sep # Chile Time
+Zone America/Santiago -4:42:46 - LMT 1890
+ -4:42:46 - SMT 1910 # Santiago Mean Time
+ -5:00 - CLT 1916 Jul 1 # Chile Time
+ -4:42:46 - SMT 1918 Sep 1 # Santiago Mean Time
+ -4:00 - CLT 1919 Jul 1 # Chile Time
+ -4:42:46 - SMT 1927 Sep 1 # Santiago Mean Time
+ -5:00 Chile CL%sT 1947 May 22 # Chile Time
-4:00 Chile CL%sT
Zone Pacific/Easter -7:17:28 - LMT 1890 # Mataveri
-7:17:28 - MMT 1932 Sep # Mataveri Mean Time
- -7:00 Chile EAS%sT 1982 Mar 13 21:00 # Easter I Time
+ -7:00 Chile EAS%sT 1982 Jan 18 21:00 # Easter I Time
-6:00 Chile EAS%sT
#
# Sala y Gomez Island is like Pacific/Easter.
@@ -918,9 +929,6 @@ Rule Para 1996 only - Mar 1 0:00 0 -
# year, the time will change on the first Sunday of October; likewise, the
# clock will be set back on the first Sunday of March.
#
-# From Jesper Norgaard (2001-03-06) [an official URL saying similar things]:
-# http://gateway.abc.com.py:8000/pub/pag04.mbr/artic?FHA=2001-03-03-02.24.52.900592
-#
Rule Para 1996 2001 - Oct Sun>=1 0:00 1:00 S
# IATA SSIM (1997-09) says Mar 1; go with Shanks & Pottenger.
Rule Para 1997 only - Feb lastSun 0:00 0 -
@@ -938,7 +946,9 @@ Rule Para 2002 2003 - Sep Sun>=1 0:00 1:
# There are several sources that claim that Paraguay made
# a timezone rule change in autumn 2004.
# From Steffen Thorsen (2005-01-05):
-# Decree 1,867 (2004-03-05) <http://www.labor.com.py/noticias.asp?id=27>
+# Decree 1,867 (2004-03-05)
+# From Carlos Raul Perasso via Jesper Norgaard Welen (2006-10-13)
+# <http://www.presidencia.gov.py/decretos/D1867.pdf>
Rule Para 2004 max - Oct Sun>=15 0:00 1:00 S
Rule Para 2005 max - Mar Sun>=8 0:00 0 -
===================================================================
RCS file: RCS/antarctica,v
retrieving revision 2006.3
retrieving revision 2006.3.0.1
diff -pu -r2006.3 -r2006.3.0.1
--- antarctica 2006/04/03 14:04:44 2006.3
+++ antarctica 2006/10/31 08:33:52 2006.3.0.1
@@ -33,19 +33,27 @@ Rule RussAQ 1996 max - Oct lastSun 2:00
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule ArgAQ 1964 1966 - Mar 1 0:00 0 -
Rule ArgAQ 1964 1966 - Oct 15 0:00 1:00 S
-Rule ArgAQ 1967 only - Apr 1 0:00 0 -
+Rule ArgAQ 1967 only - Apr 2 0:00 0 -
Rule ArgAQ 1967 1968 - Oct Sun>=1 0:00 1:00 S
Rule ArgAQ 1968 1969 - Apr Sun>=1 0:00 0 -
Rule ArgAQ 1974 only - Jan 23 0:00 1:00 S
Rule ArgAQ 1974 only - May 1 0:00 0 -
-Rule ArgAQ 1974 1976 - Oct Sun>=1 0:00 1:00 S
-Rule ArgAQ 1975 1977 - Apr Sun>=1 0:00 0 -
-Rule ChileAQ 1966 1997 - Oct Sun>=9 0:00 1:00 S
-Rule ChileAQ 1967 1998 - Mar Sun>=9 0:00 0 -
-Rule ChileAQ 1998 only - Sep 27 0:00 1:00 S
-Rule ChileAQ 1999 only - Apr 4 0:00 0 -
-Rule ChileAQ 1999 max - Oct Sun>=9 0:00 1:00 S
-Rule ChileAQ 2000 max - Mar Sun>=9 0:00 0 -
+Rule ChileAQ 1972 1986 - Mar Sun>=9 3:00u 0 -
+Rule ChileAQ 1974 1987 - Oct Sun>=9 4:00u 1:00 S
+Rule ChileAQ 1987 only - Apr 12 3:00u 0 -
+Rule ChileAQ 1988 1989 - Mar Sun>=9 3:00u 0 -
+Rule ChileAQ 1988 only - Oct Sun>=1 4:00u 1:00 S
+Rule ChileAQ 1989 only - Oct Sun>=9 4:00u 1:00 S
+Rule ChileAQ 1990 only - Mar 18 3:00u 0 -
+Rule ChileAQ 1990 only - Sep 16 4:00u 1:00 S
+Rule ChileAQ 1991 1996 - Mar Sun>=9 3:00u 0 -
+Rule ChileAQ 1991 1997 - Oct Sun>=9 4:00u 1:00 S
+Rule ChileAQ 1997 only - Mar 30 3:00u 0 -
+Rule ChileAQ 1998 only - Mar Sun>=9 3:00u 0 -
+Rule ChileAQ 1998 only - Sep 27 4:00u 1:00 S
+Rule ChileAQ 1999 only - Apr 4 3:00u 0 -
+Rule ChileAQ 1999 max - Oct Sun>=9 4:00u 1:00 S
+Rule ChileAQ 2000 max - Mar Sun>=9 3:00u 0 -
# Argentina - year-round bases
===================================================================
RCS file: RCS/tz-link.htm,v
retrieving revision 2006.14
retrieving revision 2006.14.0.2
diff -pu -r2006.14 -r2006.14.0.2
--- tz-link.htm 2006/10/10 15:31:46 2006.14
+++ tz-link.htm 2006/10/31 08:42:01 2006.14.0.2
@@ -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="2006-10-06">
+<meta name="DC.Date" content="2006-10-31">
<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">
@@ -384,12 +384,13 @@ 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>.</dd>
+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>
<dt>Chile</dt>
-<dd>WebExhibits publishes a <a
-href="http://webexhibits.org/daylightsaving/chile.html"
-hreflang="es">history of official time (in Spanish)</a> originally
-written by the Chilean Hydrographic and Oceanographic Service.</dd>
+<dd>The Chilean Hydrographic and Oceanographic Service publishes a <a
+href="http://www.horaoficial.cl/horaof.htm" hreflang="es"> history of
+official time (in Spanish)</a>.</dd>
<dt>Germany</dt>
<dd>The National Institute for Science and Technology maintains the <a
href="http://www.ptb.de/en/org/4/44/441/dars_e.htm">Realisation of
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