- tz - lists.iana.org

(no subject)
by Jesper Norgaard Welen April 21, 2006

April 21, 2006

www.worldtimeserver.com doesn't show the current DST rules, however, it's time zone converter does allow for peaking into the rules behind. The claim is therefore (see attached two screenshots) that the Palestinian Territory entered DST precisely one week before, Friday the 14.th. of April at 0:00. One of the screen shots will show you the unbelievable claim that at 0:15 the 14.th. of April in the Palestinian Territory, it was 23:15 the 13.th. of April in the Palestinian Territory - but even Einstein would not have been able to mingle his relativity theory so much (using for instance the speed of light), that he could go back in time. Back to the future? I think an equal time or better an error message would have been more appropriate. The question is if anyone can confirm that the DST change happened a week before. To me it sounds plausible, but we would like some (more) authoritative information. Regards, Jesper Nørgaard Welen Email: jnorgard(a)Prodigy.Net.mx Project Leader (Líder de Proyecto) Software CIMMYT - Centro Internacional de Mejoramiento de Maíz y Trigo Dirección: CIMMYT Int. c/o Jesper Nørgaard Km. 45, Carretera México-Veracruz El Batán Texcoco, Edo. de México CP 56130 MEXICO Tel.: +52 (55) 58-04-20-04 ext. 1374 Fax: +52 (55) 58-04-75-58 Tel. Casa: 53-10-05-95 ó 53-10-97-78 Download the free program World Time Explorer, I made: http://www.worldtimeexplorer.com/index.html

1 0

Gaza time
by Jesper Norgaard Welen April 20, 2006

April 20, 2006

I checked www.worldtimeserver.com recently and most of the recent changes to the tz database are in line with this server, it seems to be fairly well up-dated in timezone matters (unlike wikipedia, for instance!). This goes for Haiti, Tunisia, Sri Lanka, Irana, and Georgia to mention a few. Therefore I was surprised to see that they have UTC+3 at the moment for Palestinian Territory, when tz database will first have Gaza to enter DST in approximately 18 hours. This could be because they think that it follows Israel time, but it might be because they learned something more about Gaza/West Bank. Does anyone have information if Gaza/West Bank in fact applied DST before expected or not? Regards, - Jesper Jesper Nørgaard Welen Email: jnorgard(a)Prodigy.Net.mx Project Leader (Líder de Proyecto) Software CIMMYT - Centro Internacional de Mejoramiento de Maíz y Trigo Dirección: CIMMYT Int. c/o Jesper Nørgaard Km. 45, Carretera México-Veracruz El Batán Texcoco, Edo. de México CP 56130 MEXICO Tel.: +52 (55) 58-04-20-04 ext. 1374 Fax: +52 (55) 58-04-75-58 Tel. Casa: 53-10-05-95 ó 53-10-97-78 Download the free program World Time Explorer, I made: http://www.worldtimeexplorer.com/index.html

1 0

RE: Tzcode2006d.tar.gz and tzdata2006d.tar.gz
by Phillip Guerra April 20, 2006

April 20, 2006

I'm working in another O/S. Is it possible for someone to send a listing of the tz info as it appears on their UNIX systems? Strange request, I know, but I'm wanting to check my implemenation against what is done on the UXIX systems, so I really could use the output from a listing of all time zones, if that's possible. Thanks to all for your efforts. -----Original Message----- From: Olson, Arthur David (NIH/NCI) [E] [mailto:olsona@dc37a.nci.nih.gov] Sent: Monday, April 17, 2006 1:36 PM To: tz(a)lecserver.nci.nih.gov Subject: Tzcode2006d.tar.gz and tzdata2006d.tar.gz The files... ftp://elsie.nci.nih.gov/pub/tzcode2006d.tar.gz ...and... ftp://elsie.nci.nih.gov/pub/tzdata2006d.tar.gz ...are now available. These reflect the Haiti, Sri Lanka, and Canada changes circulated by Paul Eggert on the time zone mailing list; there's also a new audio CD documented in the art file. --ado Confidentiality Notice: This email message, including any attachments, is for the sole use of the intended recipient(s), and may contain privileged or confidential information. Any unauthorized review, use, disclosure or distribution is prohibited. If you are not the intended recipient, please contact the sender by replying to this email, and delete all copies of the original message.

2 2

FW: Timezone file asia
by Olson, Arthur David (NIH/NCI) [E] April 19, 2006

April 19, 2006

Nimal Ratnayake is not on the time zone list; direct replies appropriately. --ado -----Original Message----- From: Nimal Ratnayake [mailto:nimalr@pdn.ac.lk] Sent: Tuesday, April 18, 2006 2:00 AM To: Nimal Ratnayake Cc: tz(a)lecserver.nci.nih.gov Subject: Re: Timezone file asia Hi, After I sent my previous mail (appended here) I noted that there is another change needed. I am referring to the latest file tzdata2006d.tar.gz The last two lines for the Sri Lanka time zone file Asia/Colombo needs to be changed to 6:00 - LKT 2006 Apr 15 0:30 5:30 - LKT as the time change was effective from April 15 0:30. Thanks. Nimal Ratnayake Nimal Ratnayake wrote: > Hi, > > The latest version of the timezone data file > ftp://elsie.nci.nih.gov/pub/tzdata2006c.tar.gz > contains the updated time offset for Sri Lanka, but the text field is > set to IST. I think this needs to be corrected to LKT. > > # Zone NAME GMTOFF RULES FORMAT [UNTIL] > Zone Asia/Colombo 5:19:24 - LMT 1880 > 5:19:32 - MMT 1906 # Moratuwa Mean > Time > 5:30 - IST 1942 Jan 5 > 5:30 0:30 IHST 1942 Sep > 5:30 1:00 IST 1945 Oct 16 2:00 > 5:30 - IST 1996 May 25 0:00 > 6:30 - LKT 1996 Oct 26 0:30 > 6:00 - LKT 2006 Apr 14 > 5:30 - IST > > Thanks. > > Nimal Ratnayake > >

2 1

FW: Timezone file asia
by Olson, Arthur David (NIH/NCI) [E] April 18, 2006

April 18, 2006

Nimal Ratnayake is not on the time zone list; direct replies appropriately. --ado -----Original Message----- From: Nimal Ratnayake [mailto:nimalr@pdn.ac.lk] Sent: Tuesday, April 18, 2006 1:38 AM To: tz(a)lecserver.nci.nih.gov Subject: Timezone file asia Hi, The latest version of the timezone data file ftp://elsie.nci.nih.gov/pub/tzdata2006c.tar.gz contains the updated time offset for Sri Lanka, but the text field is set to IST. I think this needs to be corrected to LKT. # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Asia/Colombo 5:19:24 - LMT 1880 5:19:32 - MMT 1906 # Moratuwa Mean Time 5:30 - IST 1942 Jan 5 5:30 0:30 IHST 1942 Sep 5:30 1:00 IST 1945 Oct 16 2:00 5:30 - IST 1996 May 25 0:00 6:30 - LKT 1996 Oct 26 0:30 6:00 - LKT 2006 Apr 14 5:30 - IST Thanks. Nimal Ratnayake

1 0

Timezone file asia
by Nimal Ratnayake April 18, 2006

April 18, 2006

Hi, The latest version of the timezone data file ftp://elsie.nci.nih.gov/pub/tzdata2006c.tar.gz contains the updated time offset for Sri Lanka, but the text field is set to IST. I think this needs to be corrected to LKT. # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Asia/Colombo 5:19:24 - LMT 1880 5:19:32 - MMT 1906 # Moratuwa Mean Time 5:30 - IST 1942 Jan 5 5:30 0:30 IHST 1942 Sep 5:30 1:00 IST 1945 Oct 16 2:00 5:30 - IST 1996 May 25 0:00 6:30 - LKT 1996 Oct 26 0:30 6:00 - LKT 2006 Apr 14 5:30 - IST Thanks. Nimal Ratnayake

1 1

Tzcode2006d.tar.gz and tzdata2006d.tar.gz
by Olson, Arthur David (NIH/NCI) [E] April 17, 2006

April 17, 2006

The files... ftp://elsie.nci.nih.gov/pub/tzcode2006d.tar.gz ...and... ftp://elsie.nci.nih.gov/pub/tzdata2006d.tar.gz ...are now available. These reflect the Haiti, Sri Lanka, and Canada changes circulated by Paul Eggert on the time zone mailing list; there's also a new audio CD documented in the art file. --ado

1 0

RE: proposed tz changes for Haiti, Sri Lanka, and Canada
by Chris Walton April 15, 2006

April 15, 2006

Paul, The patch looks accurate with the exception of the two Yukon zones. America/Whitehorse is now showing up with M%T instead of P%T. America/Dawson shows up with an offset of -9:00 hours instead of -8:00 hours. I suspect that these are both typos. -chris * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * --- northamerica.p 2006-04-14 10:38:44.182628000 -0400 +++ northamerica 2006-04-14 10:43:01.413523000 -0400 @@ -1640,11 +1640,11 @@ Zone America/Inuvik -8:54:00 - LMT 1884 Zone America/Whitehorse -9:00:12 - LMT 1900 Aug 20 -9:00 NT_YK Y%sT 1966 Jul 1 2:00 -8:00 NT_YK P%sT 1980 - -8:00 Canada M%sT + -8:00 Canada P%sT Zone America/Dawson -9:17:40 - LMT 1900 Aug 20 -9:00 NT_YK Y%sT 1973 Oct 28 0:00 -8:00 NT_YK P%sT 1980 - -9:00 Canada P%sT + -8:00 Canada P%sT ############################################################################### -----Original Message----- From: Paul Eggert [mailto:eggert@CS.UCLA.EDU] Sent: April 14, 2006 6:28 AM To: tz(a)lecserver.nci.nih.gov Subject: proposed tz changes for Haiti, Sri Lanka, and Canada Here are proposed changes to the tz database that I hope finishes off the usual March madness of DST rule changes. As I write, the tz database is incorrect for current time stamps in Haiti (for some months) and for Sri Lanka (for the next 8 hours or so) so it's time to get these changes out the door. * Haiti observes DST this year, and probably in the future. (Thanks to Steffen Thorsen for this info.) * The Sri Lanka time zone change from +06:00 to +05:30 occurs at April 15 00:30 local time, not at April 14 00:00. (Thanks to Jesper Norgaard Welen for this info.) * It seems it's safer to predict that all of Canada will adopt US DST rules next year, than to predict, as we did, that there will be some holdouts. (Thanks to Chris Walton for this info.) * From 1967 through 1986, Manitoba's fall transitions were at 03:00 local time, not 02:00. (THanks to Rob Douglas and Chris Walton for this info.) =================================================================== RCS file: RCS/asia,v retrieving revision 2006.3 retrieving revision 2006.3.0.1 diff -pu -r2006.3 -r2006.3.0.1 --- asia 2006/04/03 14:04:44 2006.3 +++ asia 2006/04/14 10:17:35 2006.3.0.1 @@ -1526,10 +1526,10 @@ Zone Asia/Singapore 6:55:25 - LMT 1901 J # With effect from 12.30 a.m. on 26th October 1996 # Sri Lanka will be six (06) hours ahead of GMT. -# From Petr Machata (2006-03-09): -# It was brought to my attention that Sri Lanka is going to change -# timezone from GMT+6:00 to GMT+5:30, quite soon at Apr/13: -# http://www.hindu.com/thehindu/holnus/001200603042035.htm +# From Jesper Norgaard Welen (2006-04-14), quoting Sri Lanka News +Online # <http://news.sinhalaya.com/wmview.php?ArtID=11002> (2006-04-13): +# 0030 hrs on April 15, 2006 (midnight of April 14, 2006 +30 minutes) # +at present, become 2400 hours of April 14, 2006 (midnight of April 14, 2006). # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Asia/Colombo 5:19:24 - LMT 1880 @@ -1539,7 +1539,7 @@ Zone Asia/Colombo 5:19:24 - LMT 1880 5:30 1:00 IST 1945 Oct 16 2:00 5:30 - IST 1996 May 25 0:00 6:30 - LKT 1996 Oct 26 0:30 - 6:00 - LKT 2006 Apr 14 + 6:00 - LKT 2006 Apr 15 0:30 5:30 - IST # Syria =================================================================== RCS file: RCS/northamerica,v retrieving revision 2006.3 retrieving revision 2006.3.0.1 diff -pu -r2006.3 -r2006.3.0.1 --- northamerica 2006/04/03 14:07:15 2006.3 +++ northamerica 2006/04/14 10:17:35 2006.3.0.1 @@ -895,7 +895,13 @@ Zone America/Menominee -5:50:27 - LMT 18 # Unless otherwise specified, the data for Canada are all from Shanks # & Pottenger. -# From Paul Eggert (2006-03-22): +# From Chris Walton (2006-04-01): +# The British Columbia government announced yesterday that it will # +adjust daylight savings next year to align with changes in the # U.S. +and the rest of Canada.... +# +http://www2.news.gov.bc.ca/news_releases_2005-2009/2006AG0014-000330.ht +m + +# From Paul Eggert (2006-04-09): # H. David Matthews and Mary Vincent's map # <a href="http://www.canadiangeographic.ca/Magazine/SO98/geomap.asp"> # "It's about TIME", _Canadian Geographic_ (September-October 1998) @@ -916,17 +922,7 @@ Zone America/Menominee -5:50:27 - LMT 18 # had agreed; see <http://www.cbc.ca/pei/story/pe_daylight_20051207.html> # (2005-12-07). It also reported that Alberta will fall into line; see # <http://www.cbc.ca/calgary/story/ca_daylight20060202.html> (2006-02-02). -# -# To reflect all this, the Canada, Edm, and Winn rules have been -# adjusted to agree with the 2007 US change. This means we assume -# most of Canada will fall into line. However, British Columbia, -# Newfoundland, Northwest Territories, and Yukon already have separate -# rules in our database, so for now we'll leave them alone, which -# means that we currently assume these regions will not change their -# rules and will disagree with the US starting in 2007. This -# assumption is probably incorrect, with the possible exception of -# Newfoundland. We plan to adjust the Vanc, StJohns, and NT_YK -# rules as the corresponding provinces make their announcements. +# For now, assume all of Canada will fall into line. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Canada 1918 only - Apr 14 2:00 1:00 D @@ -976,9 +972,15 @@ Rule StJohns 1960 1986 - Oct lastSun 2:0 # INMS (2000-09-12) says that, since 1988 at least, Newfoundland switches # at 00:01 local time. For now, assume it started in 1987. Rule StJohns 1987 only - Apr Sun>=1 0:01 1:00 D -Rule StJohns 1987 max - Oct lastSun 0:01 0 S +Rule StJohns 1987 2006 - Oct lastSun 0:01 0 S Rule StJohns 1988 only - Apr Sun>=1 0:01 2:00 DD -Rule StJohns 1989 max - Apr Sun>=1 0:01 1:00 D +Rule StJohns 1989 2006 - Apr Sun>=1 0:01 1:00 D +# From Chris Walton (2006-04-05): +# http://www.releases.gov.nl.ca/releases/2006/mpa/0331n01.htm +# [This says Newfoundlandland expects to follow step with the US.] +Rule StJohns 2007 max - Mar Sun>=8 0:01 1:00 D +Rule StJohns 2007 max - Nov Sun>=1 0:01 0 S +# # St John's has an apostrophe, but Posix file names can't have apostrophes. # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone America/St_Johns -3:30:52 - LMT 1884 @@ -1278,6 +1280,30 @@ Zone America/Rainy_River -6:17:56 - LMT # Manitoba +# From Chris Walton (2006-04-05): +# Here is a copy of the new official time act ... +# http://web2.gov.mb.ca/laws/statutes/ccsm/o030e.php +# The act indicates that daylight savings ends at 2:00am. + +# From Rob Douglas (2006-04-06): +# the old Manitoba Time Act - as amended by Bill 2, assented to # March +27, 1987 ... said ... +# "between two o'clock Central Standard Time in the morning of # the +first Sunday of April of each year and two o'clock Central # Standard +Time in the morning of the last Sunday of October next # following, one +hour in advance of Central Standard Time."... +# I believe that the English legislation [of the old time act] had = # +been assented to (March 22, 1967).... +# Also, as far as I can tell, there was no order-in-council varying # +the time of Daylight Saving Time for 2005 and so the provisions of # +the 1987 version would apply - the changeover was at 2:00 Central # +Standard Time (i.e. not until 3:00 Central Daylight Time). + +# From Paul Eggert (2006-04-10): +# Shanks & Pottenger say Manitoba switched at 02:00 (not 02:00s) # +starting 1966. Since 02:00s is clearly correct for 1967 on, assume # +it was also 02:00s in 1966. + # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Winn 1916 only - Apr 23 0:00 1:00 D Rule Winn 1916 only - Sep 17 0:00 0 S @@ -1300,18 +1326,13 @@ Rule Winn 1959 only - Oct lastSun 2:00 0 Rule Winn 1960 only - Sep lastSun 2:00 0 S Rule Winn 1963 only - Apr lastSun 2:00 1:00 D Rule Winn 1963 only - Sep 22 2:00 0 S -Rule Winn 1966 1986 - Apr lastSun 2:00 1:00 D -Rule Winn 1966 1986 - Oct lastSun 2:00 0 S -Rule Winn 1987 2006 - Apr Sun>=1 2:00s 1:00 D -# From Paul Eggert (2000-10-02): -# INMS (2000-09-12) says that, since 1988 at least, Manitoba switches from -# DST at 03:00 local time. For now, assume it started in 1987. -Rule Winn 1987 2006 - Oct lastSun 2:00s 0 S -Rule Winn 2007 max - Mar Sun>=8 2:00s 1:00 D -Rule Winn 2007 max - Nov Sun>=1 2:00s 0 S +Rule Winn 1966 1986 - Apr lastSun 2:00s 1:00 D +Rule Winn 1966 2005 - Oct lastSun 2:00s 0 S +Rule Winn 1987 2005 - Apr Sun>=1 2:00s 1:00 D # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone America/Winnipeg -6:28:36 - LMT 1887 Jul 16 - -6:00 Winn C%sT + -6:00 Winn C%sT 2006 + -6:00 Canada C%sT # Saskatchewan @@ -1418,12 +1439,10 @@ Rule Edm 1969 only - Apr lastSun 2:00 1: Rule Edm 1969 only - Oct lastSun 2:00 0 S Rule Edm 1972 1986 - Apr lastSun 2:00 1:00 D Rule Edm 1972 2006 - Oct lastSun 2:00 0 S -Rule Edm 1987 2006 - Apr Sun>=1 2:00 1:00 D -Rule Edm 2007 max - Mar Sun>=8 2:00 1:00 D -Rule Edm 2007 max - Nov Sun>=1 2:00 0 S # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone America/Edmonton -7:33:52 - LMT 1906 Sep - -7:00 Edm M%sT + -7:00 Edm M%sT 1987 + -7:00 Canada M%sT # British Columbia @@ -1443,11 +1462,11 @@ Rule Vanc 1945 only - Sep 30 2:00 0 S Rule Vanc 1946 1986 - Apr lastSun 2:00 1:00 D Rule Vanc 1946 only - Oct 13 2:00 0 S Rule Vanc 1947 1961 - Sep lastSun 2:00 0 S -Rule Vanc 1962 max - Oct lastSun 2:00 0 S -Rule Vanc 1987 max - Apr Sun>=1 2:00 1:00 D +Rule Vanc 1962 2006 - Oct lastSun 2:00 0 S # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone America/Vancouver -8:12:28 - LMT 1884 - -8:00 Vanc P%sT + -8:00 Vanc P%sT 1987 + -8:00 Canada P%sT Zone America/Dawson_Creek -8:00:56 - LMT 1884 -8:00 Canada P%sT 1947 -8:00 Vanc P%sT 1972 Aug 30 2:00 @@ -1586,8 +1605,8 @@ Rule NT_YK 1945 only - Sep 30 2:00 0 S Rule NT_YK 1965 only - Apr lastSun 0:00 2:00 DD Rule NT_YK 1965 only - Oct lastSun 2:00 0 S Rule NT_YK 1980 1986 - Apr lastSun 2:00 1:00 D -Rule NT_YK 1980 max - Oct lastSun 2:00 0 S -Rule NT_YK 1987 max - Apr Sun>=1 2:00 1:00 D +Rule NT_YK 1980 2006 - Oct lastSun 2:00 0 S +Rule NT_YK 1987 2006 - Apr Sun>=1 2:00 1:00 D # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone America/Pangnirtung -4:22:56 - LMT 1884 -4:00 NT_YK A%sT 1995 Apr Sun>=1 2:00 @@ -1612,16 +1631,20 @@ Zone America/Cambridge_Bay -7:00:20 - LM -6:00 - CST 2001 Apr 1 3:00 -7:00 Canada M%sT Zone America/Yellowknife -7:37:24 - LMT 1884 - -7:00 NT_YK M%sT + -7:00 NT_YK M%sT 1980 + -7:00 Canada M%sT Zone America/Inuvik -8:54:00 - LMT 1884 -8:00 NT_YK P%sT 1979 Apr lastSun 2:00 - -7:00 NT_YK M%sT + -7:00 NT_YK M%sT 1980 + -7:00 Canada M%sT Zone America/Whitehorse -9:00:12 - LMT 1900 Aug 20 -9:00 NT_YK Y%sT 1966 Jul 1 2:00 - -8:00 NT_YK P%sT + -8:00 NT_YK P%sT 1980 + -8:00 Canada M%sT Zone America/Dawson -9:17:40 - LMT 1900 Aug 20 -9:00 NT_YK Y%sT 1973 Oct 28 0:00 - -8:00 NT_YK P%sT + -8:00 NT_YK P%sT 1980 + -9:00 Canada P%sT ############################################################################### @@ -2105,6 +2128,18 @@ Zone America/Guatemala -6:02:04 - LMT 19 # October 2005. # # "Port-au-Prince, March 31, 2005" +# +# From Steffen Thorsen (2006-04-04): +# I have been informed by users that Haiti observes DST this year like +# last year, so the current "only" rule for 2005 might be changed to a +# "max" rule or to last until 2006. (Who knows if they will observe DST +# next year or if they will extend their DST like US/Canada next year). +# +# I have found this article about it (in French): +# http://www.haitipressnetwork.com/news.cfm?articleID=7612 +# +# The reason seems to be an energy crisis. + # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Haiti 1983 only - May 8 0:00 1:00 D @@ -2114,8 +2149,8 @@ Rule Haiti 1983 1987 - Oct lastSun 0:00 # Go with IATA. Rule Haiti 1988 1997 - Apr Sun>=1 1:00s 1:00 D Rule Haiti 1988 1997 - Oct lastSun 1:00s 0 S -Rule Haiti 2005 only - Apr Sun>=1 0:00 1:00 D -Rule Haiti 2005 only - Oct lastSun 0:00 0 S +Rule Haiti 2005 max - Apr Sun>=1 0:00 1:00 D +Rule Haiti 2005 max - Oct lastSun 0:00 0 S # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone America/Port-au-Prince -4:49:20 - LMT 1890 -4:49 - PPMT 1917 Jan 24 12:00 # P-a-P MT

4 3

Sri Lanka GMT offset adjustment
by Jesper Norgaard Welen April 14, 2006

April 14, 2006

I have found a website that claims a different time for the GMT offset change for Sri Lanka than we have in the present 2006c. The page http://news.sinhalaya.com/wmview.php?ArtID=11002 claims the following: 13 April 2006 - 07:38 Change in Sri Lanka Standard Time Ministers have approved a Cabinet Memorandum submitted by Disaster Management and Human Rights Minister Mahinda Samarasinghe to revert the clock by 30 minutes from April 14 midnight. With the implementation of this decision, the Sri Lanka Standard Time (SLST) reverts back to the zone GMT +5 1/2 hours, which was used prior to May 24, 1996 for over 50 years. It is necessary to put the clock back by half an hour at 0030 hrs on April 15. This means 0030 hrs on April 15, 2006 (midnight of April 14, 2006 +30 minutes) at present, become 2400 hours of April 14, 2006 (midnight of April 14, 2006). === end of article === This is different than the tz database which will have the change at midnight of the 13.th. of April, thus putting time back to 23:30 the 13.th. of April. Steffen Thorsen on http://www.timeanddate.com/worldclock/results.html?query=colombo however has it from 13.th. of April at 0:30 returning to 13.th. of April 0:00, e.g. almost 48 hours before news.sinhalay.com will have it. Perhaps Steffen could enlighten us on his source (usually local web users)? Although the article from news.sinhalay.com is not official, it is the first one I have seen that gives explicit instructions about what time to adjust the clocks. So who are we to believe? Regards, Jesper Nørgaard Welen Email: jnorgard(a)Prodigy.Net.mx Project Leader (Líder de Proyecto) Software CIMMYT - Centro Internacional de Mejoramiento de Maíz y Trigo Dirección: CIMMYT Int. c/o Jesper Nørgaard Km. 45, Carretera México-Veracruz El Batán Texcoco, Edo. de México CP 56130 MEXICO Tel.: +52 (55) 58-04-20-04 ext. 1374 Fax: +52 (55) 58-04-75-58 Tel. Casa: 53-10-05-95 ó 53-10-97-78 Download the free program World Time Explorer, I made: http://www.worldtimeexplorer.com/index.html

2 1

America/Winnipeg 2:00am or 3:00am (was Canada 2007)
by Chris Walton April 13, 2006

April 13, 2006

Sorry to change the subject of the e-mail thread again. Paul E. and I received some information from the folks at the National Research Council (NRC) in Ottawa regarding the Manitoba Official Time Act. This is what we learned: March 22/1967 - Official Time Act for Manitoba received assent. I have not personally seen a copy of this act but my understanding (based on e-mail from Rob Douglas at the NRC) is that section 2 reads: "2 Throughout the province the official time which shall be used and observed shall be (a) except between two o'clock Central Standard Time in the morning of the last Sunday in April of each year and two o'clock Central Standard Time in the morning of the last Sunday in October next following, Central Standard Time; and (b) between two o'clock Central Standard Time in the morning of the last Sunday in April of each year and two o'clock Central Standard Time in the morning of the last Sunday in October next following, one hour in advance of Central Standard Time." The wording explicitly indicates that the transition from daylight time to standard time should take place at 02:00 CST. 02:00 CST is equivalent to 03:00 CDT or 3:00 a.m. wall time. A rather interesting bit of information which Rob noticed: the French version of Act was worded differently than the English version. My French is poor, but here is a rough English translation of the French version of the Act: "the first Sunday of April at two in the morning and the last Sunday of October at the same time". This would seem to imply daylight saving time ended at 02:00 CDT instead of 02:00 CST! Apparently if there are differences in translation, the English version takes priority. The English version of the Act does "not" reflect the current "end time" specified in the TZDATA rules from 1967 to 1986. TZDATA needs to be updated accordingly. March 27/1987 - assent of an amendment to the Official Time Act. http://www.canlii.org/mb/laws/sta/o-30/20050510/whole.html # English http://www.canlii.org/mb/legis/loi/o-30/20050510/tout.html # French The only change in both the French and English versions of the amendment was the starting date (first Sunday in April instead of last Sunday of April). The updated act reads: "2 Throughout the province the official time which shall be used and observed shall be (a) except between two o'clock Central Standard Time in the morning of the first Sunday in April of each year and two o'clock Central Standard Time in the morning of the last Sunday in October next following, Central Standard Time; and (b) between two o'clock Central Standard Time in the morning of the first Sunday in April of each year and two o'clock Central Standard Time in the morning of the last Sunday in October next following, one hour in advance of Central Standard Time." The English version of this amendment "does" match Current TZDATA rules from 1987 onwards. Dec 08/2005: - assent of another amendment to the Official Time Act: http://web2.gov.mb.ca/laws/statutes/ccsm/o030e.php # English http://web2.gov.mb.ca/laws/statutes/ccsm/o030e.php # French The new wording is significantly different than the wording in the original act. The French and English versions are finally in sync. The amended act reads: "2(2)Subject to subsection (3), daylight saving time being the time one hour in advance of Central Standard Time must be used and observed throughout the province (a) in 2006, from 2:00 a.m. on the first Sunday in April until 2:00 a.m. on the last Sunday in October; and (b) in 2007 and every year after that, from 2:00 a.m. on the second Sunday in March until 2:00 a.m. on the first Sunday in November. The new wording does not specify "Standard Time" or "Daylight Saving Time". I interpreted this to mean that daylight savings ends at 02:00 CDT. Rob Douglas of the NRC agrees with this interpretation. There is apparently some rational to this interpretation; the time of 2:00 a.m. must be treated as 02:00 "Official Time". Official Time is defined in section 1 of the act. Up until the point in time that the clocks move back, "Official Time" is "Daylight Saving Time" so 2:00 a.m. is 2:00 CDT. The NRC-INMS web page has been updated to reflect that daylight saving time in Manitoba now ends at 02:00 CDT. http://inms-ienm.nrc-cnrc.gc.ca/en/faq_time_e.php#5 There is a note that says the start times have been in effect since 1988. There is currently no note about end times; we may see a further update and/or a footnote in the near future. Based on the information in the original Time Act and the two amendments, the transitions from daylight time to standard time specified in TZDATA need to be updated as follows: 1916-1966 No change to exiting rules. 1967-2005: 03:00 CDT 2006-END_OF_TIME: 02:00 CDT Paul E. has suggested that the transition from daylight time to standard time in 1966 should be changed from 02:00 CDT to 03:00 CDT. i.e. we should treat 1966 like 1967. My opinion is that we should leave 1966 alone. There was no legislation (that I know of) in 1966 and the rest of the Country (with some exceptions) had traditionally used 2:00 wall time for the switch. I will leave this up to Paul to make a final decision on what he wants to do with 1966. And one last note... Two of the Manitoba government news releases which I referenced in my previous e-mail should be ignored; there is no legislation to back them up. NRC is ignoring them so we should too! Both news releases lead one to believe that daylight saving time in 2005 (and prior years) ended at 02:00 CDT instead of 02:00 CST. For reference, here are the URLs. http://www.gov.mb.ca/chc/press/top/2005/10/2005-10-17-02.html http://www.gov.mb.ca/chc/press/top/2005/11/2005-11-02-06.html We need to keep an eye on the Manitoba government next October and make sure that they don't publish more incorrect information. -chris -----Original Message----- From: Chris Walton Sent: April 5, 2006 12:05 PM To: 'tz(a)elsie.nci.nih.gov' Subject: RE: Canada 2007 (was America/Vancouver 2007) I dug up some more news releases from the Manitoba Government. It seems that the 3:00am transition from daylight savings to standard time was valid prior to 2005. Oct 1997: "This year, the official reversion to standard time occurs precisely at 3 a.m., Oct. 26, at which time clocks are turned back to 2 a.m." http://www.gov.mb.ca/chc/press/top/1997/10/1997-10-14-01.html Oct 1998: "This year, the official reversion to standard time occurs precisely at 3 a.m., Oct. 25, at which time clocks are turned back to 2 a.m. http://www.gov.mb.ca/chc/press/top/1998/10/1998-10-13-05.html Oct 1999: "This year, the official reversion to standard time occurs precisely at 3 a.m., Oct. 31, at which time clocks are turned back to 2 a.m." http://www.gov.mb.ca/chc/press/top/1999/10/1999-10-18-02.html Oct 2000: "This year, the official reversion to standard time occurs precisely at 3 a.m., Oct. 29, at which time clocks are turned back to 2 a.m." http://www.gov.mb.ca/chc/press/top/2000/10/2000-10-18-02.html Oct 2001: "This year, the official reversion to standard time occurs precisely at 3 a.m., Oct. 28, at which time clocks are turned back to 2 a.m." http://www.gov.mb.ca/chc/press/top/2001/10/2001-10-17-01.html Oct 2002: "This year, the official reversion to standard time occurs precisely at 3 a.m., Oct. 27, at which time clocks are turned back to 2 a.m." http://www.gov.mb.ca/chc/press/top/2002/10/2002-10-16-01.html Oct 2003: "This year, the official reversion to standard time occurs precisely at 3 a.m., Oct. 26, at which time clocks are turned back to 2 a.m." http://www.gov.mb.ca/chc/press/top/2003/10/2003-10-15-03.html Oct 2004: "This year, the official change back to standard time will occur at precisely 3 a.m., Sunday, Oct. 31, at which time clocks are turned back to 2 a.m." http://www.gov.mb.ca/chc/press/top/2004/10/2004-10-13-02.html Oct 2005: "This year, the precise time change occurs at 1:59 a.m. Sunday, Oct. 30 at which time clocks are set back to 1 a.m." http://www.gov.mb.ca/chc/press/top/2005/10/2005-10-17-02.html Nov 2005 # this new release is in reference to proposed legislation for 2007: "Currently, Manitobans advance their clocks forward by one hour at 2 a.m. on the first Sunday in April and turn them back at 2 a.m. the last Sunday in October." http://www.gov.mb.ca/chc/press/top/2005/11/2005-11-02-06.html I don't know if there was legislation to support the change in 2005. The new releases above are not offical statues but they do come directly from the Manitoba government so I suppose we should trust them. I think that the "Winn" rules need to be updated for 2005 and onwards. The rules should use "2:00" instead of "2:00s". Alternativily, America/Winnipeg could use the "Canada" rule from 2005 onwards. I will send e-mail to INMS asking if they are aware of the change and if they have plans to update their web site. -chris -----Original Message----- From: Chris Walton Sent: April 5, 2006 3:59 AM To: tz(a)elsie.nci.nih.gov Subject: Canada 2007 (was America/Vancouver 2007) Sorry to change the subject line mid-thread but we seem to have jumped across the country. Newfoundland has not made a decision on changes for 2007 yet. Here is the latest press release which mentions the subject: http://www.releases.gov.nl.ca/releases/2006/mpa/0331n01.htm I have not seen any announcements yet from Yukon, Northwest Territories, or Nunavut. I don't know if we should expect the same type of official statutes and timely press releases that have come from the provincial governments. However, if all three territories do decide to fall in line, NT_YK could be abandoned in favour of the "Canada" rule. BC and Alberta could use the "Canada" rule, however, I won't lose sleep if we stay with Vanc and Edm. In the end it makes no difference given that the rules are identical. I think we need to take a close look at the "Winn" rules for Manitoba. The current rule for the transition from daylight to standard time uses a time of "2:00s". If I understand the syntax correctly this is the same as "3:00" or "3:00w". The following three line note appears in the current northamerica tzdata file: "# From Paul Eggert (2000-10-02): # INMS (2000-09-12) says that, since 1988 at least, Manitoba switches from # DST at 03:00 local time. For now, assume it started in 1987." The INMS (Institute for National Measurement Standards) web site does indeed show that daylight savings in Manitoba ends at 03:00 CDT. http://inms-ienm.nrc-cnrc.gc.ca/en/faq_time_e.php#5 This "is" an official government web site but it is run by the federal government. We have to remember that in Canada, daylight savings legislation is the responsibility of the provincial and territorial governments. Here is a copy of the new official time act from the government of Manitoba web site. http://web2.gov.mb.ca/laws/statutes/ccsm/o030e.php The act indicates that daylight savings ends at 2:00am. To me, this implies 02:00 CDT and not 02:00 CST. Would a lawyer interpret it differently? I could not find a copy of the old act, so I don't know what it used to say. I did find a news release from the Alberta government dated Oct 17/2005 which states: "This year, the precise time change occurs at 1:59 a.m. Sunday, Oct. 30 at which time clocks are set back to 1 a.m." http://www.gov.mb.ca/chc/press/top/2005/10/2005-10-17-02.html The news release is not an official document but I beginning to wonder if the 03:00 is just a typo on the INMS web site. Is there anybody from Manitoba on this mailing list? Is there any information other than the INMS web site that indicates Manitoba ever switched the clock at 3:00am? -chris -----Original Message----- From: Paul Eggert [mailto:eggert@CS.UCLA.EDU] Sent: Tue 4/4/2006 8:54 PM To: tz(a)elsie.nci.nih.gov Cc: Chris Walton Subject: Re: America/Vancouver 2007 "Chris Walton" <Chris.Walton(a)telus.com> writes: > http://www2.news.gov.bc.ca/news_releases_2005-2009/2006AG0014-000330.h > tm Thanks for the heads-up. I noticed this independently but your reference is better. > If possible, can the appropriate changes be squeezed into 2006c? Didn't quite make it, sorry. It should be in the next version though. > I think it makes sense to start using the existing "Canada" rules > which have already been updated instead of creating more "Vanc" > rules. Could be, since people are falling into line so quickly. I guess we should do the same for Winn and Edm rules as well? And NT_YK? What about Newfoundland?

1 0