Here are proposed changes to the tz database for the news items we've accumulated recently: * Brazil will observe DST from 2007-10-14 00:00 to 2008-02-17 00:00. (Thanks to Steffen Thorsen for this.) * Egypt switched earlier than we expected. (Thanks to Dirk Losch and Jesper Norgaard Welen for this.) * Likewise for Gaza. (Thanks to Jesper Norgaard Welen for this.) * Iran will resume DST next year. (Thanks to Jesper Norgaard Welen for this.) * Venezuela is currently planning to change time zones on January 1, to -04:30. This seems to be a bit disorganized, but I suppose we can change the database later as needed. =================================================================== RCS file: RCS/africa,v retrieving revision 2007.7 retrieving revision 2007.7.0.1 diff -pu -r2007.7 -r2007.7.0.1 --- africa 2007/08/20 14:45:10 2007.7 +++ africa 2007/09/07 22:39:16 2007.7.0.1 @@ -224,9 +224,19 @@ Rule Egypt 2006 only - Sep 21 23:00s 0 - # From Jesper Norgaard Welen (2007-08-15): [The following agree:] # http://www.nentjes.info/Bill/bill5.htm # http://www.timeanddate.com/worldclock/city.html?n=53 +# From Steffen Thorsen (2007-09-04): The official information...: +# http://www.sis.gov.eg/En/EgyptOnline/Miscellaneous/000002/020700000000000000... +Rule Egypt 2007 only - Sep Thu>=1 23:00s 0 - +# From Abdelrahman Hassan (2007-09-06): +# Due to the Hijri (lunar Islamic calendar) year being 11 days shorter +# than the year of the Gregorian calendar, Ramadan shifts earlier each +# year. This year it will be observed September 13 (September is quite +# hot in Egypt), and the idea is to make fasting easier for workers by +# shifting business hours one hour out of daytime heat. Consequently, +# unless discontinued, next DST may end Thursday 28 August 2008. # From Paul Eggert (2007-08-17): -# For lack of better info, assume the new rule is first Thursday. -Rule Egypt 2007 max - Sep Thu>=1 23:00s 0 - +# For lack of better info, assume the new rule is last Thursday in August. +Rule Egypt 2008 max - Aug lastThu 23:00s 0 - # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Africa/Cairo 2:05:00 - LMT 1900 Oct =================================================================== RCS file: RCS/asia,v retrieving revision 2007.5 retrieving revision 2007.5.0.1 diff -pu -r2007.5 -r2007.5.0.1 --- asia 2007/04/02 14:10:56 2007.5 +++ asia 2007/09/20 22:44:02 2007.5.0.1 @@ -568,14 +568,15 @@ Zone Asia/Jayapura 9:22:48 - LMT 1932 No # Reingold's/Dershowitz' calculator gives correctly the Gregorian date # 2058-03-21 for 1 Farvardin 1437 (astronomical). # -# From Paul Eggert (2006-03-22): -# The above comments about post-2006 transitions may become relevant again, -# if Iran ever resuscitates DST, so we'll leave the comments in. -# # From Steffen Thorsen (2006-03-22): # Several of my users have reported that Iran will not observe DST anymore: # http://www.irna.ir/en/news/view/line-17/0603193812164948.htm # +# From Reuters (2007-09-16), with a heads-up from Jesper Norgaard Welen: +# ... the Guardian Council ... approved a law on Sunday to re-introduce +# daylight saving time ... +# http://uk.reuters.com/article/oilRpt/idUKBLA65048420070916 +# # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Iran 1978 1980 - Mar 21 0:00 1:00 D Rule Iran 1978 only - Oct 21 0:00 0 S @@ -596,6 +597,36 @@ Rule Iran 2004 only - Mar 21 0:00 1:00 D Rule Iran 2004 only - Sep 21 0:00 0 S Rule Iran 2005 only - Mar 22 0:00 1:00 D Rule Iran 2005 only - Sep 22 0:00 0 S +Rule Iran 2008 only - Mar 21 0:00 1:00 D +Rule Iran 2008 only - Sep 21 0:00 0 S +Rule Iran 2009 2011 - Mar 22 0:00 1:00 D +Rule Iran 2009 2011 - Sep 22 0:00 0 S +Rule Iran 2012 only - Mar 21 0:00 1:00 D +Rule Iran 2012 only - Sep 21 0:00 0 S +Rule Iran 2013 2015 - Mar 22 0:00 1:00 D +Rule Iran 2013 2015 - Sep 22 0:00 0 S +Rule Iran 2016 only - Mar 21 0:00 1:00 D +Rule Iran 2016 only - Sep 21 0:00 0 S +Rule Iran 2017 2019 - Mar 22 0:00 1:00 D +Rule Iran 2017 2019 - Sep 22 0:00 0 S +Rule Iran 2020 only - Mar 21 0:00 1:00 D +Rule Iran 2020 only - Sep 21 0:00 0 S +Rule Iran 2021 2023 - Mar 22 0:00 1:00 D +Rule Iran 2021 2023 - Sep 22 0:00 0 S +Rule Iran 2024 only - Mar 21 0:00 1:00 D +Rule Iran 2024 only - Sep 21 0:00 0 S +Rule Iran 2025 2027 - Mar 22 0:00 1:00 D +Rule Iran 2025 2027 - Sep 22 0:00 0 S +Rule Iran 2028 2029 - Mar 21 0:00 1:00 D +Rule Iran 2028 2029 - Sep 21 0:00 0 S +Rule Iran 2030 2031 - Mar 22 0:00 1:00 D +Rule Iran 2030 2031 - Sep 22 0:00 0 S +Rule Iran 2032 2033 - Mar 21 0:00 1:00 D +Rule Iran 2032 2033 - Sep 21 0:00 0 S +Rule Iran 2034 2035 - Mar 22 0:00 1:00 D +Rule Iran 2034 2035 - Sep 22 0:00 0 S +Rule Iran 2036 2037 - Mar 21 0:00 1:00 D +Rule Iran 2036 2037 - Sep 21 0:00 0 S # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Asia/Tehran 3:25:44 - LMT 1916 3:25:44 - TMT 1946 # Tehran Mean Time @@ -1518,6 +1549,17 @@ Zone Asia/Karachi 4:28:12 - LMT 1907 # I guess it is likely that next year's date will be moved as well, # because of the Ramadan. +# From Jesper Norgaard Welen (2007-09-18): +# According to Steffen Thorsen's web site the Gaza Strip and the rest of the +# Palestinian territories left DST early on 13.th. of September at 2:00. + +# From Paul Eggert (2007-09-20): +# My understanding is that Gaza and the West Bank disagree even over when +# the weekend is (Thursday+Friday versus Friday+Saturday), so I'd be a bit +# surprised if they agreed about DST. But for now, assume they agree. +# For lack of better information, predict that future changes will be +# the 2nd Thursday of September at 02:00. + # The rules for Egypt are stolen from the `africa' file. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule EgyptAsia 1957 only - May 10 0:00 1:00 S @@ -1533,7 +1575,7 @@ Rule Palestine 2004 only - Oct 1 1:00 0 Rule Palestine 2005 only - Oct 4 2:00 0 - Rule Palestine 2006 max - Apr 1 0:00 1:00 S Rule Palestine 2006 only - Sep 22 0:00 0 - -Rule Palestine 2007 max - Oct Fri>=15 0:00 0 - +Rule Palestine 2007 max - Sep Thu>=8 2:00 0 - # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Asia/Gaza 2:17:52 - LMT 1900 Oct =================================================================== RCS file: RCS/southamerica,v retrieving revision 2007.4 retrieving revision 2007.4.0.1 diff -pu -r2007.4 -r2007.4.0.1 --- southamerica 2007/03/20 12:48:12 2007.4 +++ southamerica 2007/09/27 20:14:56 2007.4.0.1 @@ -424,6 +424,10 @@ Zone America/La_Paz -4:32:36 - LMT 1890 # modern Brazilian eletronic voting machines which, apparently, can't deal # with a time change between the first and the second rounds of the elections. +# From Steffen Thorsen (2007-09-20): +# Brazil will start DST on 2007-10-14 00:00 and end on 2008-02-17 00:00: +# http://www.mme.gov.br/site/news/detail.do;jsessionid=BBA06811AFCAAC28F028521... + # From Paul Eggert (2002-10-10): # The official decrees referenced below are mostly taken from # <a href="http://pcdsh01.on.br/DecHV.html"> @@ -557,13 +561,18 @@ Rule Brazil 2004 only - Nov 2 0:00 1:0 # Decree <a href="http://pcdsh01.on.br/DecHV5539.gif">5,539</a> (2005-09-19), # adopted by the same states as before. Rule Brazil 2005 only - Oct 16 0:00 1:00 S -# Decree <a href="http://www.planalto.gov.br/ccivil_03/_Ato2004-2006/2006/Decreto/D5920.htm">5,920</a> -# (2006-10-03), adopted by the same states as before. -Rule Brazil 2006 max - Nov Sun>=1 0:00 1:00 S -Rule Brazil 2007 max - Feb lastSun 0:00 0 - +# Decree <a href="http://pcdsh01.on.br/DecHV5920.gif">5,920</a> (2006-10-03), +# adopted by the same states as before. +Rule Brazil 2006 only - Nov 5 0:00 1:00 S +Rule Brazil 2007 only - Feb 25 0:00 0 - +# (Decree number not yet known) +# http://www.brasil.gov.br/noticias/ultimas_noticias/horario_verao070920/ +# (2007-09-20) after a heads-up from Steffen Thorsen: +Rule Brazil 2007 max - Oct Sun>=8 0:00 1:00 S +Rule Brazil 2008 max - Feb Sun>=15 0:00 0 - # The latest ruleset listed above says that the following states observe DST: # DF, ES, GO, MG, MS, MT, PR, RJ, RS, SC, SP. -# For dates after mid-2007, the above rules with TO="max" are guesses +# For dates after mid-2008, the above rules with TO="max" are guesses # and are quite possibly wrong, but are more likely than no DST at all. @@ -1097,8 +1106,20 @@ Zone America/Montevideo -3:44:44 - LMT 1 -3:00 Uruguay UY%sT # Venezuela +# +# From Kiraz Janicke (2007-09-25), in +# http://www.venezuelanalysis.com/analysis/2645: +# The proposal ... involves turning the clock back half an hour from +# +4.00 Greenwich Mean Time (GMT), to +4.30GMT, the time zone +# Venezuela had until December 31, 1964, when the current time zone +# was adopted. The change was due to take place on September 17 and +# then on September 24, but has since been postponed until December +# 31, to allow for compliance with international organizations, such +# as the International Office of Weights and Measures. + # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone America/Caracas -4:27:44 - LMT 1890 -4:27:40 - CMT 1912 Feb 12 # Caracas Mean Time? -4:30 - VET 1965 # Venezuela Time - -4:00 - VET + -4:00 - VET 2008 + -4:30 - VET