proposed tz patches for Cuba, Georgia, Mato Grosso

Paul Eggert eggert at CS.UCLA.EDU
Fri Oct 29 06:22:18 UTC 2004


Steffen Thorsen <straen at thorsen.priv.no> writes:

> Evert van der Veer ... informed me that Cuba was not going back to
> standard time this year.

Thanks for the heads-up; this will cause the tz database to go wrong
in Cuba this weekend.  I found a Cuban news source for the story too.

Here's a proposed patch to the tz database to handle this issue, along
with a couple of other minor pending issues that do not affect any
time stamps:

 * Add a cross reference comment from Europe to Asia for Georgia.

 * The legal date of the change in Mato Grosso this year was Oct 1, not Oct 4.


===================================================================
RCS file: RCS/northamerica,v
retrieving revision 2004.1
retrieving revision 2004.1.0.1
diff -pu -r2004.1 -r2004.1.0.1
--- northamerica	2004/05/27 16:00:30	2004.1
+++ northamerica	2004/10/29 06:12:26	2004.1.0.1
@@ -1731,6 +1731,15 @@ Zone America/Costa_Rica	-5:36:20 -	LMT	1
 # to DST--and one more hour on 1999-04-04--when the announcers will have
 # returned to Baltimore, which switches on that date.)
 
+# From Evert van der Veer via Steffen Thorsen (2004-10-28):
+# Cuba is not going back to standard time this year.
+# From Paul Eggert (2004-10-28):
+# http://www.granma.cu/ingles/2004/septiembre/juev30/41medid-i.html
+# says that it's due to a problem at the Antonio Guiteras
+# thermoelectric plant, and says "This October there will be no return
+# to normal hours (after daylight saving time)".
+# For now, let's assume that it's a one-year temporary measure.
+
 # Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
 Rule	Cuba	1928	only	-	Jun	10	0:00	1:00	D
 Rule	Cuba	1928	only	-	Oct	10	0:00	0	S
@@ -1759,8 +1768,9 @@ Rule	Cuba	1991	1995	-	Oct	Sun>=8	0:00s	0
 Rule	Cuba	1996	only	-	Oct	 6	0:00s	0	S
 Rule	Cuba	1997	only	-	Oct	12	0:00s	0	S
 Rule	Cuba	1998	1999	-	Mar	lastSun	0:00s	1:00	D
-Rule	Cuba	1998	max	-	Oct	lastSun	0:00s	0	S
+Rule	Cuba	1998	2003	-	Oct	lastSun	0:00s	0	S
 Rule	Cuba	2000	max	-	Apr	Sun>=1	0:00s	1:00	D
+Rule	Cuba	2005	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 2004.5
retrieving revision 2004.5.0.1
diff -pu -r2004.5 -r2004.5.0.1
--- southamerica	2004/10/11 18:44:52	2004.5
+++ southamerica	2004/10/29 06:12:26	2004.5.0.1
@@ -671,7 +671,7 @@ Zone America/Campo_Grande -3:38:28 -	LMT
 # Mato Grosso (MT)
 Zone America/Cuiaba	-3:44:20 -	LMT	1914
 			-4:00	Brazil	AM%sT	2003 Sep 24
-			-4:00	-	AMT	2004 Oct  4
+			-4:00	-	AMT	2004 Oct  1
 			-4:00	Brazil	AM%sT
 #
 # west Para (PA), Rondonia (RO)
===================================================================
RCS file: RCS/europe,v
retrieving revision 2004.2
retrieving revision 2004.2.0.1
diff -pu -r2004.2 -r2004.2.0.1
--- europe	2004/07/19 18:32:49	2004.2
+++ europe	2004/10/29 06:12:26	2004.2.0.1
@@ -708,7 +708,7 @@ Zone	Europe/Sofia	1:33:16 -	LMT	1880
 # see Serbia and Montenegro
 
 # Cyprus
-# See the `asia' file.
+# Please see the `asia' file for Asia/Nicosia.
 
 # Czech Republic
 # Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
@@ -1055,6 +1055,11 @@ Zone	Europe/Berlin	0:53:28 -	LMT	1893 Ap
 			1:00	Germany	CE%sT	1980
 			1:00	EU	CE%sT
 
+# Georgia
+# Please see the "asia" file for Asia/Tbilisi.
+# Herodotus (Histories, IV.45) says Georgia north of the Phasis (now Rioni)
+# is in Europe.  Our reference location Tbilisi is in the Asian part.
+
 # Gibraltar
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone Europe/Gibraltar	-0:21:24 -	LMT	1880 Aug  2



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