April 2002 - tz - lists.iana.org

Time Zone converter
by Katie_Lunday＠capgroup.com April 5, 2002

April 5, 2002

I'm having trouble finding New Zealand time zones. I found one for Pacific/Auckland but it doesn't convert correctly so I'm not sure if that is a different Auckland from the one in New Zealand? If the other coordinate is US/Pacific the dates should be different because of the date line but the conversion with Pacific/Auckland has it on the same day as US/Pacific. Any suggestions? Thank you, Katie Lunday Capital International tel: 310/996-6175 fax: 310/996-6511 email: katie_lunday(a)capgroup.com

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tzcode2002c.tar.gz and tzdata2002c.tar.gz
by Olson, Arthur David (NCI) April 4, 2002

April 4, 2002

The files ftp://elsie.nci.nih.gov/pub/tzcode2002c.tar.gz and ftp://elsie.nci.nih.gov/pub/tzdata2002c.tar.gz are now available. These include the changes circulated by Paul Eggert last week on the time zone mailing list, and the change to zic.c to avoid creating symlinks to files that don't exist. --ado

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DST in Pakistan
by Jiri Kanak April 4, 2002

April 4, 2002

Hi All, I'm looking for zonefile for Pakistan with DST, which will be there for the first time this year. Can someone help me? Jiri -- ______ /_____/\ /____ \\ \ Jiri Kanak /_____\ \\ / System Engineer /_____/ \/ / / Sun Enterprise Services /_____/ / \//\ \_____\//\ / / Tel.: +420 - 2 - 33 00 93 90, 33 00 93 11 \_____/ / /\ / Fax.: +420 - 2 - 33 00 93 55 \_____/ \\ \ E-mail: jiri.kanak(a)sun.com \_____\ \\ \_____\/

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Best of Zones
by Gilbert C Healton April 2, 2002

April 2, 2002

For quite a few years now I have had documentation on the web for software developers involved with calendars, dates, times, and time zones. While the original motivation for this document was Y2K avoidance and correction the document goes a lot deeper into proper use of dates and times. After some lurking here it just struck me that some readers in this group might have some good ideas about ways programmers frequently go wrong with time zone processing or good ways of processing zones that are too little used. Any worthy ides not already covered by my document that would be useful to programmers are solicited. The Best of Dates, the Worst of Dates. http://www.exit109.com/~ghealton/y2k/yrexamples.html ---------------------------------------------------------------------- ghealton(a)exit109.com http://www.exit109.com/~ghealton/ ---------------------------------------------------------------------- Computers are like air conditioners: they don't work well when Windows are left open

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FW: Estonia entry
by Olson, Arthur David (NCI) April 2, 2002

April 2, 2002

Denis Afonin is not on the time zone mailing list; direct replies appropriately. --ado -----Original Message----- From: Denis Afonin [mailto:dfa@solo.ee] Sent: Sunday, March 31, 2002 2:04 PM To: tz(a)elsie.nci.nih.gov Subject: Estonia entry Hello, Since March 31, 2002 1:00 UTC summertime is entered again in Estonia. Here is patch for # @(#)europe 7.81 Plus, link more cities. --- europe.orig Mon Jan 28 19:56:02 2002 +++ europe Sun Mar 31 21:41:48 2002 @@ -65,6 +65,7 @@ # ... # Estonia ... uses EU dates but not at 01:00 GMT, they use midnight GMT. # I don't think they know yet what they will do from 1996 onwards. +# Since March 31, 2002 Estonia uses right EU rules. # ... # There shouldn't be any [current members who are not using EU rules]. # A Directive has the force of law, member states are obliged to enact @@ -853,6 +854,9 @@ # no. 206 (1998-09-22) and thus sticks Estonia to +02:00 GMT for all # the year round. The regulation is effective 1999-11-01. +# From Denis Afonin <dfa(a)solo.ee> (2002-03-31): +# March 31, 2002: Summertime is entered in Estonia. + # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Europe/Tallinn 1:39:00 - LMT 1880 1:39:00 - TMT 1918 Feb # Tallinn Mean Time @@ -865,7 +869,11 @@ 2:00 1:00 EEST 1989 Sep 24 2:00s 2:00 C-Eur EE%sT 1998 Sep 22 2:00 EU EE%sT 1999 Nov 1 - 2:00 - EET + 2:00 - EET 2002 Mar 31 1:00 + 2:00 EU EE%sT + +Link Europe/Tallinn Europe/Tartu +Link Europe/Tallinn Europe/Maardu # Finland #

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FW: Daylight Savings Time in Mexico
by Olson, Arthur David (NCI) April 2, 2002

April 2, 2002

Henry Ivy is not on the time zone mailing list; direct replies appropriately. --ado -----Original Message----- From: IVY,HENRY (HP-Roseville,ex1) [mailto:henry_ivy@am.exch.hp.com] Sent: Monday, April 01, 2002 9:15 PM To: 'tz(a)elsie.nci.nih.gov' Cc: VEGA,HORACIO (HP-Mexico,ex1); GRIMM,GREG (HP-Roseville,ex1) Subject: Daylight Savings Time in Mexico Dear Sirs; I work for Hewlett-Packard in Roseville, CA, USA. One of my assignments is to maintain daylight savings time schedules in special databases for world wide global support. I admire your work. I look forward to any comments that you may have about the following information. Horacio Vega works for HP in Mexico. He brought the following decree to my attention. His Spanish is better than mine. He has told me that Mexico City will use daylight savings time, along with most of Mexico. http://www.conae.gob.mx/ahorro/horaver2001_m1_2002.html#decreto I started with the tzdata2002b version of the data. The rules for Mexico Daylight Savings Time should have the 2001 rules commented out, and the previous two lines reset to run to max. The time zone rules for America/Mexico_City should have the last line commented out, and the previous line reset to not expire. The time zone rules for America/Tijuana should have the last line commented out, and the previous line reset to not expire. --------------- # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Mexico 1939 only - Feb 5 0:00 1:00 D Rule Mexico 1939 only - Jun 25 0:00 0 S Rule Mexico 1940 only - Dec 9 0:00 1:00 D Rule Mexico 1941 only - Apr 1 0:00 0 S Rule Mexico 1943 only - Dec 16 0:00 1:00 W Rule Mexico 1944 only - May 1 0:00 0 S Rule Mexico 1950 only - Feb 12 0:00 1:00 D Rule Mexico 1950 only - Jul 30 0:00 0 S Rule Mexico 1996 max - Apr Sun>=1 2:00 1:00 D Rule Mexico 1996 max - Oct lastSun 2:00 0 S # Rule Mexico 2001 max - May Sun>=1 2:00 1:00 D # Rule Mexico 2001 max - Sep lastSun 2:00 0 S # Zone NAME GMTOFF RULES FORMAT [UNTIL] # Quintana Roo Zone America/Cancun -5:47:04 - LMT 1922 Jan 1 0:12:56 -6:00 - CST 1981 Dec 23 -5:00 Mexico E%sT 1998 Aug 2 2:00 -6:00 Mexico C%sT # Campeche, Yucatan Zone America/Merida -5:58:28 - LMT 1922 Jan 1 0:01:32 -6:00 - CST 1981 Dec 23 -5:00 - EST 1982 Dec 2 -6:00 Mexico C%sT # Coahuila, Durango, Nuevo Leon, Tamaulipas Zone America/Monterrey -6:41:16 - LMT 1921 Dec 31 23:18:44 -6:00 - CST 1988 -6:00 US C%sT 1989 -6:00 Mexico C%sT # Central Mexico Zone America/Mexico_City -6:36:36 - LMT 1922 Jan 1 0:23:24 -7:00 - MST 1927 Jun 10 23:00 -6:00 - CST 1930 Nov 15 -7:00 - MST 1931 May 1 23:00 -6:00 - CST 1931 Oct -7:00 - MST 1932 Apr 1 -6:00 Mexico C%sT # -6:00 - CST # Chihuahua Zone America/Chihuahua -7:04:20 - LMT 1921 Dec 31 23:55:40 -7:00 - MST 1927 Jun 10 23:00 -6:00 - CST 1930 Nov 15 -7:00 - MST 1931 May 1 23:00 -6:00 - CST 1931 Oct -7:00 - MST 1932 Apr 1 -6:00 - CST 1996 -6:00 Mexico C%sT 1998 -6:00 - CST 1998 Apr Sun>=1 3:00 -7:00 Mexico M%sT # Sonora Zone America/Hermosillo -7:23:52 - LMT 1921 Dec 31 23:36:08 -7:00 - MST 1927 Jun 10 23:00 -6:00 - CST 1930 Nov 15 -7:00 - MST 1931 May 1 23:00 -6:00 - CST 1931 Oct -7:00 - MST 1932 Apr 1 -6:00 - CST 1942 Apr 24 -7:00 - MST 1949 Jan 14 -8:00 - PST 1970 -7:00 Mexico M%sT 1999 -7:00 - MST # Baja California Sur, Nayarit, Sinaloa Zone America/Mazatlan -7:05:40 - LMT 1921 Dec 31 23:54:20 -7:00 - MST 1927 Jun 10 23:00 -6:00 - CST 1930 Nov 15 -7:00 - MST 1931 May 1 23:00 -6:00 - CST 1931 Oct -7:00 - MST 1932 Apr 1 -6:00 - CST 1942 Apr 24 -7:00 - MST 1949 Jan 14 -8:00 - PST 1970 -7:00 Mexico M%sT # Baja California Zone America/Tijuana -7:48:04 - LMT 1922 Jan 1 0:11:56 -7:00 - MST 1924 -8:00 - PST 1927 Jun 10 23:00 -7:00 - MST 1930 Nov 15 -8:00 - PST 1931 Apr 1 -8:00 1:00 PDT 1931 Sep 30 -8:00 - PST 1942 Apr 24 -8:00 1:00 PWT 1945 Nov 12 -8:00 - PST 1948 Apr 5 -8:00 1:00 PDT 1949 Jan 14 -8:00 - PST 1954 -8:00 CA P%sT 1961 -8:00 - PST 1976 -8:00 US P%sT 1996 -8:00 Mexico P%sT # -8:00 US P%sT # From Paul Eggert (2001-03-05): # Formerly there was an America/Ensenada zone, which differed from # America/Tijuana only in that it did not observe DST from 1976 # through 1995. This was as per Shanks. However, Guy Harris reports # that the 1987 OAG says "Only Ensenada, Mexicale, San Felipe and # Tijuana observe DST," which contradicts Shanks but does imply that # DST-observance was a town-by-town matter back then. This concerns # data after 1970 so most likely there should be at least one Zone # other than America/Tijuana for Baja, but it's not clear yet what its # name or contents should be. # # Revillagigedo Is # no information ############################################################################ ### --------------- Regards, Hank Ivy | Henry (Hank) B. Ivy PHONE : (916)785-1392 | | FAX : (916)785-9238 | | ecardfile : https://ecardfile.com/id/hank_ivy | | Hewlett-Packard Company USENET: hivy(a)rosemail.rose.hp.com | | 8000 Foothills Boulevard, MS 5617 | | Roseville, California 95747-5617 |

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symlinks
by Olson, Arthur David (NCI) April 2, 2002

April 2, 2002

Lacking consensus on the symlink problem, what I'd suggest for now is a change to zic.c that would only deal with the problem of creating symlinks to files that don't exist--see below. If making just this change for now is agreeable to folks, I'll update tzcode and tzdata once Paul Eggert weighs in with Paul's conclusions on what Estonia should look like. --ado *** 7.104/zic.c Tue Apr 2 09:58:10 2002 --- 7.107/zic.c Tue Apr 2 09:58:11 2002 *************** *** 1,6 **** #ifndef lint #ifndef NOID ! static char elsieid[] = "@(#)zic.c 7.104"; #endif /* !defined NOID */ #endif /* !defined lint */ --- 1,6 ---- #ifndef lint #ifndef NOID ! static char elsieid[] = "@(#)zic.c 7.107"; #endif /* !defined NOID */ #endif /* !defined lint */ *************** *** 620,626 **** result = link(fromname, toname); #if (HAVE_SYMLINK - 0) ! if (result != 0) { const char *s = tofile; register char * symlinkcontents = NULL; while ((s = strchr(s+1, '/')) != NULL) --- 620,628 ---- result = link(fromname, toname); #if (HAVE_SYMLINK - 0) ! if (result != 0 && ! access(fromname, F_OK) == 0 && ! !itsdir(fromname)) { const char *s = tofile; register char * symlinkcontents = NULL; while ((s = strchr(s+1, '/')) != NULL)

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Daylight Savings Time in Mexico
by IVY,HENRY (HP-Roseville,ex1) April 2, 2002

April 2, 2002

Dear Sirs; I work for Hewlett-Packard in Roseville, CA, USA. One of my assignments is to maintain daylight savings time schedules in special databases for world wide global support. I admire your work. I look forward to any comments that you may have about the following information. Horacio Vega works for HP in Mexico. He brought the following decree to my attention. His Spanish is better than mine. He has told me that Mexico City will use daylight savings time, along with most of Mexico. http://www.conae.gob.mx/ahorro/horaver2001_m1_2002.html#decreto I started with the tzdata2002b version of the data. The rules for Mexico Daylight Savings Time should have the 2001 rules commented out, and the previous two lines reset to run to max. The time zone rules for America/Mexico_City should have the last line commented out, and the previous line reset to not expire. The time zone rules for America/Tijuana should have the last line commented out, and the previous line reset to not expire. --------------- # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Mexico 1939 only - Feb 5 0:00 1:00 D Rule Mexico 1939 only - Jun 25 0:00 0 S Rule Mexico 1940 only - Dec 9 0:00 1:00 D Rule Mexico 1941 only - Apr 1 0:00 0 S Rule Mexico 1943 only - Dec 16 0:00 1:00 W Rule Mexico 1944 only - May 1 0:00 0 S Rule Mexico 1950 only - Feb 12 0:00 1:00 D Rule Mexico 1950 only - Jul 30 0:00 0 S Rule Mexico 1996 max - Apr Sun>=1 2:00 1:00 D Rule Mexico 1996 max - Oct lastSun 2:00 0 S # Rule Mexico 2001 max - May Sun>=1 2:00 1:00 D # Rule Mexico 2001 max - Sep lastSun 2:00 0 S # Zone NAME GMTOFF RULES FORMAT [UNTIL] # Quintana Roo Zone America/Cancun -5:47:04 - LMT 1922 Jan 1 0:12:56 -6:00 - CST 1981 Dec 23 -5:00 Mexico E%sT 1998 Aug 2 2:00 -6:00 Mexico C%sT # Campeche, Yucatan Zone America/Merida -5:58:28 - LMT 1922 Jan 1 0:01:32 -6:00 - CST 1981 Dec 23 -5:00 - EST 1982 Dec 2 -6:00 Mexico C%sT # Coahuila, Durango, Nuevo Leon, Tamaulipas Zone America/Monterrey -6:41:16 - LMT 1921 Dec 31 23:18:44 -6:00 - CST 1988 -6:00 US C%sT 1989 -6:00 Mexico C%sT # Central Mexico Zone America/Mexico_City -6:36:36 - LMT 1922 Jan 1 0:23:24 -7:00 - MST 1927 Jun 10 23:00 -6:00 - CST 1930 Nov 15 -7:00 - MST 1931 May 1 23:00 -6:00 - CST 1931 Oct -7:00 - MST 1932 Apr 1 -6:00 Mexico C%sT # -6:00 - CST # Chihuahua Zone America/Chihuahua -7:04:20 - LMT 1921 Dec 31 23:55:40 -7:00 - MST 1927 Jun 10 23:00 -6:00 - CST 1930 Nov 15 -7:00 - MST 1931 May 1 23:00 -6:00 - CST 1931 Oct -7:00 - MST 1932 Apr 1 -6:00 - CST 1996 -6:00 Mexico C%sT 1998 -6:00 - CST 1998 Apr Sun>=1 3:00 -7:00 Mexico M%sT # Sonora Zone America/Hermosillo -7:23:52 - LMT 1921 Dec 31 23:36:08 -7:00 - MST 1927 Jun 10 23:00 -6:00 - CST 1930 Nov 15 -7:00 - MST 1931 May 1 23:00 -6:00 - CST 1931 Oct -7:00 - MST 1932 Apr 1 -6:00 - CST 1942 Apr 24 -7:00 - MST 1949 Jan 14 -8:00 - PST 1970 -7:00 Mexico M%sT 1999 -7:00 - MST # Baja California Sur, Nayarit, Sinaloa Zone America/Mazatlan -7:05:40 - LMT 1921 Dec 31 23:54:20 -7:00 - MST 1927 Jun 10 23:00 -6:00 - CST 1930 Nov 15 -7:00 - MST 1931 May 1 23:00 -6:00 - CST 1931 Oct -7:00 - MST 1932 Apr 1 -6:00 - CST 1942 Apr 24 -7:00 - MST 1949 Jan 14 -8:00 - PST 1970 -7:00 Mexico M%sT # Baja California Zone America/Tijuana -7:48:04 - LMT 1922 Jan 1 0:11:56 -7:00 - MST 1924 -8:00 - PST 1927 Jun 10 23:00 -7:00 - MST 1930 Nov 15 -8:00 - PST 1931 Apr 1 -8:00 1:00 PDT 1931 Sep 30 -8:00 - PST 1942 Apr 24 -8:00 1:00 PWT 1945 Nov 12 -8:00 - PST 1948 Apr 5 -8:00 1:00 PDT 1949 Jan 14 -8:00 - PST 1954 -8:00 CA P%sT 1961 -8:00 - PST 1976 -8:00 US P%sT 1996 -8:00 Mexico P%sT # -8:00 US P%sT # From Paul Eggert (2001-03-05): # Formerly there was an America/Ensenada zone, which differed from # America/Tijuana only in that it did not observe DST from 1976 # through 1995. This was as per Shanks. However, Guy Harris reports # that the 1987 OAG says "Only Ensenada, Mexicale, San Felipe and # Tijuana observe DST," which contradicts Shanks but does imply that # DST-observance was a town-by-town matter back then. This concerns # data after 1970 so most likely there should be at least one Zone # other than America/Tijuana for Baja, but it's not clear yet what its # name or contents should be. # # Revillagigedo Is # no information ############################################################################ ### --------------- Regards, Hank Ivy | Henry (Hank) B. Ivy PHONE : (916)785-1392 | | FAX : (916)785-9238 | | ecardfile : https://ecardfile.com/id/hank_ivy | | Hewlett-Packard Company USENET: hivy(a)rosemail.rose.hp.com | | 8000 Foothills Boulevard, MS 5617 | | Roseville, California 95747-5617 |

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