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FW: Re: proposed time zone package changes
by Arthur David Olson March 5, 2008

March 5, 2008

(I'm forwarding this message from Germán Poó-Caamaño who sent it to me since tz(a)elsie.nci.nih.gov is bouncing mail right now. Please send time zone items to olsona(a)mail.nih.gov for now; I'll forward them to the list.) --ado From: Germán Poó-Caamaño [gpoo(a)ubiobio.cl] Sent: Wednesday, March 05, 2008 2:58 PM To: Olson, Arthur David (NIH/NCI) [E] Subject: Re: proposed time zone package changes Attachments: chile_dst.diff I just realized I made a mistake in my patch (thanks to José Miguel Garrido's email). In order to be clear. The Supreme Decree says that Saturday 29 at 24:00 the time must be changed to 23:00. But, Sat 29 24:00 (-0300) is Sun 30 03:00 (0000). Still releasing the changes by Sunday would be too late. Attached the fixed patch. (I just modified the diff file, changing 29 by 30). Sorry for the noise. -- Germán Poó Caamaño Concepción - Chile

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Re: proposed time zone package changes
by Arthur David Olson March 5, 2008

March 5, 2008

José Miguel Garrido's electronic mail and work with zdump made me realize that since... the Chilean transitions are supposed to happen at the end of Saturday, March 29 (24:00 in America/Santiago, 22:00 in Pacific/Easter) the Chilean transitions are specified using Universal time and it's already March 30 in Univeral time near the end of March 29 in Chile ...that March 30 is what needs to appear in the file. So, with providence, the final proposed Chile change (with commentary added). Look for tzcode2008a.tar.gz and tzdata2008a.tar.gz Saturday morning. --ado ------- southamerica ------- *** /tmp/geta10295 Wed Mar 5 14:40:25 2008 --- /tmp/getb10295 Wed Mar 5 14:40:25 2008 *************** *** 1,4 **** ! # @(#)southamerica 8.15 # <pre> # This data is by no means authoritative; if you think you know better, --- 1,4 ---- ! # @(#)southamerica 8.18 # <pre> # This data is by no means authoritative; if you think you know better, *************** *** 759,764 **** --- 759,784 ---- # America/Santiago. The pre-1980 Pacific/Easter data are dubious, # but we have no other source. + # From German Poo-Caaman~o (2008-03-03): + # Due to drought, Chile extends Daylight Time in three weeks. This + # is one-time change (Saturday 3/29 at 24:00 for America/Santiago + # and Saturday 3/29 at 22:00 for Pacific/Easter) + # The Supreme Decree is located at + # <a href="http://www.shoa.cl/servicios/supremo316.pdf"> + # http://www.shoa.cl/servicios/supremo316.pdf + # </a> + # and the instructions for 2008 are located in: + # <a href="http://www.horaoficial.cl/cambio.htm"> + # http://www.horaoficial.cl/cambio.htm + # </a>. + + # From José Miguel Garrido (2008-03-05): + # ... + # You could see the announces of the change on + # <a href="http://www.shoa.cl/noticias/2008/04hora/hora.htm"> + # http://www.shoa.cl/noticias/2008/04hora/hora.htm + # </a>. + # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Chile 1927 1932 - Sep 1 0:00 1:00 S Rule Chile 1928 1932 - Apr 1 0:00 0 - *************** *** 789,795 **** 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: (1992-02) says 1992-03-14; # (1996-09) says 1998-03-08. Ignore these. # Zone NAME GMTOFF RULES FORMAT [UNTIL] --- 809,819 ---- 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 2007 - Mar Sun>=9 3:00u 0 - ! # N.B.: the end of March 29 in Chile is March 30 in Universal time, ! # which is used below in specifying the transition. ! Rule Chile 2008 only - Mar 30 3:00u 0 - ! Rule Chile 2009 max - Mar Sun>=9 3:00u 0 - # IATA SSIM anomalies: (1992-02) says 1992-03-14; # (1996-09) says 1998-03-08. Ignore these. # Zone NAME GMTOFF RULES FORMAT [UNTIL]

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FW: [Fwd: Zoneinfo file modified for includes Chile's DST change]
by Arthur David Olson March 5, 2008

March 5, 2008

(I'm forwarding this message from José Miguel Garrido who sent it to me since mail sent to tz(a)elsie.nci.nih.gov is bouncing at the moment. Please send time zone messages to olsona(a)mail.nih.gov and I'll forward them to the list. --ado From: José Miguel Garrido [jgarrido(a)zweicom.com] Sent: Wednesday, March 05, 2008 1:06 PM To: Olson, Arthur David (NIH/NCI) [E] Subject: [Fwd: Zoneinfo file modified for includes Chile's DST change] Attachments: southamerica.mod -------- Original Message -------- Subject: Zoneinfo file modified for includes Chile's DST change Date: Tue, 04 Mar 2008 10:33:35 -0300 From: José Miguel Garrido <jgarrido(a)zweicom.com> Organization: Zweicom Ltda. To: tz(a)elsie.nci.nih.gov Hi. I modified southamerica zoneinfo file and include the modification to the DST made by Chile government. You could see the announces of the change on http://www.shoa.cl/noticias/2008/04hora/hora.htm Regards, JMG. -- José Miguel Garrido Ingeniero de Proyectos ZWEICOM Fonos : (+56 2) 632 8415 anexo 105 Fax : (+56 2) 632 8415 anexo 108 Móvil : (+56 9) 9323 5815 -- José Miguel Garrido Ingeniero de Proyectos ZWEICOM Fonos : (+56 2) 632 8415 anexo 105 Fax : (+56 2) 632 8415 anexo 108 Móvil : (+56 9) 9323 5815 ... # From Jose Miguel Garrido Urzua (2008-03-04): # Includes changes to DST because the drought. DST will be at saturday # 3/29 at 24:00. It's a one-time change only. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Chile 1927 1932 - Sep 1 0:00 1:00 S Rule Chile 1928 1932 - Apr 1 0:00 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 2007 - Mar Sun>=9 3:00u 0 - Rule Chile 2008 only - Mar 30 3:00u 0 - Rule Chile 2009 max - Mar Sun>=9 3:00u 0 - # 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 -4:42:46 - 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 -7:17:44 - LMT 1890 -7:17:28 - EMT 1932 Sep # Easter Mean Time -7:00 Chile EAS%sT 1982 Mar 13 21:00 # Easter I Time -6:00 Chile EAS%sT ...

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Re: proposed time zone package changes
by Arthur David Olson March 5, 2008

March 5, 2008

Germán Poó-Caamaño's proposed changes cite the latest government sources and get the peculiar Saturday (rather than Sunday) transition date right; below find the revised patch (relative to the tzdata2007k.tar.gz file) reflecting Germán's work. Since this kicks in the wee hours of Saturday, I'll try to make tzcode2008a.tar.gz and tzdata2008a.tar.gz available Friday morning. --ado ------- southamerica ------- *** /tmp/geta9861 Wed Mar 5 13:57:25 2008 --- /tmp/getb9861 Wed Mar 5 13:57:25 2008 *************** *** 1,4 **** ! # @(#)southamerica 8.15 # <pre> # This data is by no means authoritative; if you think you know better, --- 1,4 ---- ! # @(#)southamerica 8.17 # <pre> # This data is by no means authoritative; if you think you know better, *************** *** 759,764 **** --- 759,777 ---- # America/Santiago. The pre-1980 Pacific/Easter data are dubious, # but we have no other source. + # From German Poo-Caaman~o (2008-03-03): + # Due to drought, Chile extends Daylight Time in three weeks. This + # is one-time change (Saturday 3/29 at 24:00 for America/Santiago + # and Saturday 3/29 at 22:00 for Pacific/Easter) + # The Supreme Decree is located at + # <a href="http://www.shoa.cl/servicios/supremo316.pdf"> + # http://www.shoa.cl/servicios/supremo316.pdf + # </a> + # and the instructions for 2008 are located in: + # <a href="http://www.horaoficial.cl/cambio.htm"> + # http://www.horaoficial.cl/cambio.htm + # </a>. + # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Chile 1927 1932 - Sep 1 0:00 1:00 S Rule Chile 1928 1932 - Apr 1 0:00 0 - *************** *** 789,795 **** 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: (1992-02) says 1992-03-14; # (1996-09) says 1998-03-08. Ignore these. # Zone NAME GMTOFF RULES FORMAT [UNTIL] --- 802,810 ---- 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 2007 - Mar Sun>=9 3:00u 0 - ! Rule Chile 2008 only - Mar 29 3:00u 0 - ! Rule Chile 2009 max - Mar Sun>=9 3:00u 0 - # IATA SSIM anomalies: (1992-02) says 1992-03-14; # (1996-09) says 1998-03-08. Ignore these. # Zone NAME GMTOFF RULES FORMAT [UNTIL]

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FW: Patch for timezone in Chile (Extended)
by Arthur David Olson March 5, 2008

March 5, 2008

(While tz(a)elsie.nci.nih.gov isn't working, I'm forwarding this message from Germán Poó-Caamaño. Please send time zone messages to olsona(a)mail.nih.gov and I'll forward them. --ado From: Germán Poó-Caamaño [gpoo(a)ubiobio.cl] Sent: Wednesday, March 05, 2008 1:31 PM To: Arthur David Olson Cc: Olson, Arthur David (NIH/NCI) [E] Subject: Patch for timezone in Chile (Extended) Attachments: chile_dst.diff The Supreme Decree was published in Diario Oficial by March 4, page 4. A 'Digital copy' is available at: http://www.diariodigital.cl/sumarios4/PapelDigital/20080304/in dex.html You can get to this site from http://www.diariooficial.cl/ Regards, --- I sent a patch to tz(a)elsie.nci.nih.gov a couple of days ago. It seems it ha had having problems. Anyway, it had a mistake. So, here there is a new one. It has the link to the Supreme Decree available at SHOA site (the Navy Division in charge officially of the chilean time). Regards, -- Germán Poó Caamaño Concepción - Chile --- southamerica 2008-03-04 14:00:04.000000000 +0100 +++ southamerica 2008-03-04 14:02:37.000000000 +0100 @@ -759,6 +759,15 @@ # America/Santiago. The pre-1980 Pacific/Easter data are dubious, # but we have no other source. +# From German Poo-Caaman~o (2008-03-03): +# Due to drought, Chile extends Daylight Time in three weeks. This +# is one-time change (Saturday 3/29 at 24:00 for America/Santiago +# and Saturday 3/29 at 22:00 for Pacific/Easter) +# The Supreme Decree is located at +# http://www.shoa.cl/servicios/supremo316.pdf +# and the instructions for 2008 are located in: +# http://www.horaoficial.cl/cambio.htm. + # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Chile 1927 1932 - Sep 1 0:00 1:00 S Rule Chile 1928 1932 - Apr 1 0:00 0 - @@ -789,7 +798,9 @@ 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 - +Rule Chile 2000 2007 - Mar Sun>=9 3:00u 0 - +Rule Chile 2008 only - Mar 29 3:00u 0 - +Rule Chile 2009 max - Mar Sun>=9 3:00u 0 - # IATA SSIM anomalies: (1992-02) says 1992-03-14; # (1996-09) says 1998-03-08. Ignore these. # Zone NAME GMTOFF RULES FORMAT [UNTIL]

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FW: Patch for timezone in Chile
by Arthur David Olson March 5, 2008

March 5, 2008

(I'm forwarding this message from Germán Poó-Caamaño since mail to tz(a)elsie.nci.nih.gov isn't working for the moment. Please send time zone messages to olsona(a)mail.nih.gov for now and I'll forward them.) --ado From: Germán Poó-Caamaño [gpoo(a)ubiobio.cl] Sent: Wednesday, March 05, 2008 1:12 PM To: Arthur David Olson Cc: Olson, Arthur David (NIH/NCI) [E] Subject: Patch for timezone in Chile Attachments: chile_dst.diff I sent a patch to tz(a)elsie.nci.nih.gov a couple of days ago. It seems it ha had having problems. Anyway, it had a mistake. So, here there is a new one. It has the link to the Supreme Decree available at SHOA site (the Navy Division in charge officially of the chilean time). Regards, -- Germán Poó Caamaño Concepción - Chile --- southamerica 2008-03-04 14:00:04.000000000 +0100 +++ southamerica 2008-03-04 14:02:37.000000000 +0100 @@ -759,6 +759,15 @@ # America/Santiago. The pre-1980 Pacific/Easter data are dubious, # but we have no other source. +# From German Poo-Caaman~o (2008-03-03): +# Due to drought, Chile extends Daylight Time in three weeks. This +# is one-time change (Saturday 3/29 at 24:00 for America/Santiago +# and Saturday 3/29 at 22:00 for Pacific/Easter) +# The Supreme Decree is located at +# http://www.shoa.cl/servicios/supremo316.pdf +# and the instructions for 2008 are located in: +# http://www.horaoficial.cl/cambio.htm. + # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Chile 1927 1932 - Sep 1 0:00 1:00 S Rule Chile 1928 1932 - Apr 1 0:00 0 - @@ -789,7 +798,9 @@ 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 - +Rule Chile 2000 2007 - Mar Sun>=9 3:00u 0 - +Rule Chile 2008 only - Mar 29 3:00u 0 - +Rule Chile 2009 max - Mar Sun>=9 3:00u 0 - # IATA SSIM anomalies: (1992-02) says 1992-03-14; # (1996-09) says 1998-03-08. Ignore these. # Zone NAME GMTOFF RULES FORMAT [UNTIL]

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proposed time zone package changes
by Arthur David Olson March 5, 2008

March 5, 2008

(Mail sent to tz(a)elsie.nci.nih.gov is being dropped at the moment; please send mail to olsona(a)mail.nih.gov and I'll forward it to the list.) With Chile's drought-induced extension of DST coming up this Sunday, I'd like to get a new distribution out the door to cover that seemingly well-documented change. Other proposed changes below have already been circulated on the time zone mailing list or only affect commentary. Files involved: README (spell "cover" correctly" localtime.c improve extension of rules into the far future (and far past) leapseconds document no leap second at the end of December 2007 southamerica DST extension in Chile (2007 only) If no problems are found, I'll try to make tzcode2008a.tar.gz and tzdata2008a.tar.gz available this coming Sunday morning (2008-03-09). (There may well be 2008b files shortly thereafter, especially to handle changes in Cuba at the end of March, and also to reflect recent changes in Venezuela and Argentina). --ado ------- README ------- *** /tmp/geta9293 Wed Mar 5 12:47:54 2008 --- /tmp/getb9293 Wed Mar 5 12:47:54 2008 *************** *** 1,4 **** ! @(#)README 8.1 "What time is it?" -- Richard Deacon as The King "Any time you want it to be." -- Frank Baxter as The Scientist --- 1,4 ---- ! @(#)README 8.2 "What time is it?" -- Richard Deacon as The King "Any time you want it to be." -- Frank Baxter as The Scientist *************** *** 65,71 **** system. The information in the time zone data files is by no means authoritative; ! the files currently do not even attempt to covar all time stamps before 1970, and there are undoubtedly errors even for time stamps since 1970. If you know that the rules are different from those in a file, by all means feel free to change file (and please send the changed version to --- 65,71 ---- system. The information in the time zone data files is by no means authoritative; ! the files currently do not even attempt to cover all time stamps before 1970, and there are undoubtedly errors even for time stamps since 1970. If you know that the rules are different from those in a file, by all means feel free to change file (and please send the changed version to ------- localtime.c ------- *** /tmp/geta9312 Wed Mar 5 12:48:13 2008 --- /tmp/getb9312 Wed Mar 5 12:48:13 2008 *************** *** 5,11 **** #ifndef lint #ifndef NOID ! static char elsieid[] = "@(#)localtime.c 8.8"; #endif /* !defined NOID */ #endif /* !defined lint */ --- 5,11 ---- #ifndef lint #ifndef NOID ! static char elsieid[] = "@(#)localtime.c 8.9"; #endif /* !defined NOID */ #endif /* !defined lint */ *************** *** 555,570 **** sp->ttis[sp->typecnt++] = ts.ttis[1]; } } ! i = 2 * YEARSPERREPEAT; ! sp->goback = sp->goahead = sp->timecnt > i; ! sp->goback = sp->goback && ! typesequiv(sp, sp->types[i], sp->types[0]) && ! differ_by_repeat(sp->ats[i], sp->ats[0]); ! sp->goahead = sp->goahead && ! typesequiv(sp, sp->types[sp->timecnt - 1], ! sp->types[sp->timecnt - 1 - i]) && ! differ_by_repeat(sp->ats[sp->timecnt - 1], ! sp->ats[sp->timecnt - 1 - i]); return 0; } --- 555,577 ---- sp->ttis[sp->typecnt++] = ts.ttis[1]; } } ! sp->goback = sp->goahead = FALSE; ! if (sp->timecnt > 1) { ! for (i = 1; i < sp->timecnt; ++i) ! if (typesequiv(sp, sp->types[i], sp->types[0]) && ! differ_by_repeat(sp->ats[i], sp->ats[0])) { ! sp->goback = TRUE; ! break; ! } ! for (i = sp->timecnt - 2; i >= 0; --i) ! if (typesequiv(sp, sp->types[sp->timecnt - 1], ! sp->types[i]) && ! differ_by_repeat(sp->ats[sp->timecnt - 1], ! sp->ats[i])) { ! sp->goahead = TRUE; ! break; ! } ! } return 0; } ------- leapseconds ------- *** /tmp/geta9331 Wed Mar 5 12:48:25 2008 --- /tmp/getb9331 Wed Mar 5 12:48:25 2008 *************** *** 1,4 **** ! # @(#)leapseconds 8.4 # Allowance for leapseconds added to each timezone file. --- 1,4 ---- ! # @(#)leapseconds 8.5 # Allowance for leapseconds added to each timezone file. *************** *** 46,71 **** Leap 2005 Dec 31 23:59:60 + S # INTERNATIONAL EARTH ROTATION AND REFERENCE SYSTEMS SERVICE (IERS) # SERVICE INTERNATIONAL DE LA ROTATION TERRESTRE ET DES SYSTEMES DE REFERENCE # # SERVICE DE LA ROTATION TERRESTRE ! # OBSERVATOIRE DE PARIS # 61, Av. de l'Observatoire 75014 PARIS (France) # Tel. : 33 (0) 1 40 51 22 26 # FAX : 33 (0) 1 40 51 22 91 # Internet : services.iers(a)obspm.fr # ! # Paris, 28 June 2007 # ! # Bulletin C 34 # ! # To authorities responsible # for the measurement and ! # distribution of time # # INFORMATION ON UTC - TAI # ! # NO positive leap second will be introduced at the end of December 2007. # The difference between Coordinated Universal Time UTC and the # International Atomic Time TAI is : # --- 46,72 ---- Leap 2005 Dec 31 23:59:60 + S # INTERNATIONAL EARTH ROTATION AND REFERENCE SYSTEMS SERVICE (IERS) + # # SERVICE INTERNATIONAL DE LA ROTATION TERRESTRE ET DES SYSTEMES DE REFERENCE # # SERVICE DE LA ROTATION TERRESTRE ! # OBSERVATOIRE DE PARIS # 61, Av. de l'Observatoire 75014 PARIS (France) # Tel. : 33 (0) 1 40 51 22 26 # FAX : 33 (0) 1 40 51 22 91 # Internet : services.iers(a)obspm.fr # ! # Paris, 18 January 2008 # ! # Bulletin C 35 # ! # To authorities responsible # for the measurement and ! # distribution of time # # INFORMATION ON UTC - TAI # ! # NO positive leap second will be introduced at the end of June 2008. # The difference between Coordinated Universal Time UTC and the # International Atomic Time TAI is : # *************** *** 77,82 **** # will be no time step at the next possible date. # # Daniel GAMBIS ! # Director ! # Earth Orientation Center of IERS # Observatoire de Paris, France --- 78,83 ---- # will be no time step at the next possible date. # # Daniel GAMBIS ! # Head ! # Earth Orientation Center of the IERS # Observatoire de Paris, France ------- southamerica ------- *** /tmp/geta9350 Wed Mar 5 12:48:36 2008 --- /tmp/getb9350 Wed Mar 5 12:48:36 2008 *************** *** 1,4 **** ! # @(#)southamerica 8.15 # <pre> # This data is by no means authoritative; if you think you know better, --- 1,4 ---- ! # @(#)southamerica 8.16 # <pre> # This data is by no means authoritative; if you think you know better, *************** *** 759,764 **** --- 759,803 ---- # America/Santiago. The pre-1980 Pacific/Easter data are dubious, # but we have no other source. + # From Paul Eggert (2008-02-08): + # The Associated Press reports that yesterday Chile announced it will + # extend DST this year due to a drought, until the last Saturday in + # March....Here's the URL I used for the AP + # report (though it may not work for you: AP Google URLs are unreliable + # in my experience): + # <a href="http://ap.google.com/article/ALeqM5gvriCVJJJ0RYvhGDq06v1nEykPDgD8ULKSI80"> + # http://ap.google.com/article/ALeqM5gvriCVJJJ0RYvhGDq06v1nEykPDgD8ULKSI80 + # </a> + # Without further info, I guess I would assume that DST will end in + # Chile and in Easter Island on March 30 at 03:00 UTC. + + # From Gunther Vermeir (2008-02-11) + # I received this information from a colleague in the Oracle office in Chili: + # There is a announcement on + # <a href=http://www.gobiernodechile.cl/noticias_det/?which=10062> + # http://www.gobiernodechile.cl/noticias_det/?which=10062 + # </a> + # This article is published in the official page of the Government and + # states that the Ministry of Energy announced the change in DST. Now, in + # order for it to become completely official it has to be published in + # 'Diario Official'. All decrees and resolutions become official when are + # published here (www.diariooficial.cl) + + # From Sean Coffey (2008-03-05) + # + # This Chile DST extension/change would appear to be going + # ahead. + # + # <a href="http://www.timeanddate.com/news/time/chile-extends-daylight-saving-time.html"> + # http://www.timeanddate.com/news/time/chile-extends-daylight-saving-time.html + # </a> + # <a href="http://www.timeanddate.com/worldclock/city.html?n=232"> + # http://www.timeanddate.com/worldclock/city.html?n=232 + # </a> + # <a href="http://www.gobiernodechile.cl/noticias_det/?which=10062"> + # http://www.gobiernodechile.cl/noticias_det/?which=10062 + # </a> + # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Chile 1927 1932 - Sep 1 0:00 1:00 S Rule Chile 1928 1932 - Apr 1 0:00 0 - *************** *** 789,795 **** 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: (1992-02) says 1992-03-14; # (1996-09) says 1998-03-08. Ignore these. # Zone NAME GMTOFF RULES FORMAT [UNTIL] --- 828,836 ---- 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 2007 - Mar Sun>=9 3:00u 0 - ! Rule Chile 2008 only - Mar 30 3:00u 0 - ! Rule Chile 2009 max - Mar Sun>=9 3:00u 0 - # IATA SSIM anomalies: (1992-02) says 1992-03-14; # (1996-09) says 1998-03-08. Ignore these. # Zone NAME GMTOFF RULES FORMAT [UNTIL]

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mailing list glitch update
by Arthur David Olson March 5, 2008

March 5, 2008

The domain name server entries are not the problem; the problem may be at the system to which mail is redirected by the MX entry (for virus checking purposes). I've sent in a trouble ticket. --ado

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FW: Begin of DST 2008 in Cuba changed
by Arthur David Olson March 5, 2008

March 5, 2008

I'm forwarding this message from Dirk Losch to the time zone mailing list. Mail sent to tz(a)elsie.nci.nih.gov is currently being dropped; for now, send time zone items to olsona(a)mail.nih.gov (which still works). Thanks! --ado From: Dirk Losch [dirk.losch(a)gmx.de] Sent: Wednesday, March 05, 2008 10:38 AM To: Olson, Arthur David (NIH/NCI) [E] Subject: Begin of DST 2008 in Cuba changed Hi, please send the following message to the newsgroup: Hi folks, I've been informed that the DST in Cuba will begin at 30th of March 2008. The information is based on IATA. Best regards dirk -------- Original-Nachricht -------- Datum: 03 Mar 2008 10:10:42 -0500 Von: "Mail Delivery System" <MAILER- DAEMON(a)nihsmtpxway.hub.nih.gov> An: gctt-tz(a)m.gmane.org Betreff: Delivery Status Notification (Failure) The following message to <tz(a)elsie.nci.nih.gov> was undeliverable. The reason for the problem: 5.4.7 - Delivery expired (message too old) 'timeout' -- Psssst! Schon vom neuen GMX MultiMessenger gehört? Der kann`s mit allen: http://www.gmx.net/de/go/multimessenger

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FW: Re: Chile extends DST due to drought
by Arthur David Olson March 5, 2008

March 5, 2008

Since tz(a)elsie.nci.nih.gov is currently failing, I'm forwarding this message from Sean Coffey to the time zone mailing list. For now, please send time zone messages to olsona(a)mail.nih.gov. Thanks! --ado From: Sean Coffey [Sean.Coffey(a)Sun.COM] Sent: Wednesday, March 05, 2008 5:00 AM To: Olson, Arthur David (NIH/NCI) [E] Subject: Re: Chile extends DST due to drought Hi all, This Chile DST extension/change would appear to be going ahead. http://www.timeanddate.com/news/time/chile-extends-daylight- saving-time.html http://www.timeanddate.com/worldclock/city.html?n=232 http://www.gobiernodechile.cl/noticias_det/?which=10062 Are there plans to release a tzdata update soon? regards, Sean. Gunther Vermeir wrote: > Hello, > I received this information from a colleague in the Oracle office in > Chili: > > There is a announcement on > http://www.gobiernodechile.cl/noticias_det/?which=10062 > This article is published in the official page of the Government and > states that the Ministry of Energy announced the change in DST. Now, > in order for it to become completely official it has to be published > in 'Diario Official'. All decrees and resolutions become official when > are published here (www.diariooficial.cl) > > From the moment I have more information I will forward it. > > Regards, > Gunther > > Paul Eggert wrote: >> The Associated Press reports that yesterday Chile announced it will >> extend DST this year due to a drought, until the last Saturday in >> March. Does anybody have details? Here's the URL I used for the AP >> report (though it may not work for you: AP Google URLs are unreliable >> in my experience): >> >> http://ap.google.com/article/ALeqM5gvriCVJJJ0RYvhGDq06v1nEykPD gD8ULKS >> I80 >> >> Without further info, I guess I would assume that DST will end in >> Chile and in Easter Island on March 30 at 03:00 UTC. >> >> >

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mailing list glitch
by Arthur David Olson March 5, 2008

March 5, 2008

Due to the appearance of a standard-issue DNS entry for elsie.nci.nih.gov (which trumps the mail exchange--MX--entry that's the only one there should be), mail to tz(a)elsie.nci.nih.gov has been getting dropped since February 21. I'm working on resolving the problem; in the meantime, please send time zone mail to olsona(a)mail.nih.gov, an address that still works. I'll forward the mail in a way that avoids the DNS problem. My apologies for the inconvenience. --ado

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FW: Time Zone abbreviations - request
by Olson, Arthur David (NIH/NCI) [E] Feb. 25, 2008

Feb. 25, 2008

I'm forwarding this message from Ilya Stein, who is not on the time zone mailing list. Those of you who are on the time mailing list, please direct replies appropriately. --ado -----Original Message----- From: Ilya.Shtein(a)metavante.com [mailto:Ilya.Shtein@metavante.com] Sent: Wednesday, February 20, 2008 5:59 To: tz(a)lecserver.nci.nih.gov Cc: Troy.Bradley(a)metavante.com Subject: Time Zone abbreviations - request Hello, Our company is in need for standard abbreviations that would map one-to-one to the names used in the Olson database. These abbreviations must be as short as possible and significantly shorter than the conventional Olson names. We can definitely come up with our own abbreviations, but I am wondering if any such abbreviations exist in the Olson db. This is important because we want to be able to point our external partners to a source they are already familiar with, rather than invent something homegrown and impose it on our partners. If such abbreviations do not exist, is it possible to create them? We think it will be beneficial for many users who have space limitations and can't use the Olson names "as is", but need access to the functionality. We are willing to create such list, work with the keepers of the Olson DB to make it official, and maintain the list if needed. One possible implementation could consist of two parts: 1) a two-letter ocean/continent abbreviation: Africa Af America Am Antarctica An Arctic Ar Asia As Atlantic At Australia Au Europe Eu Indian In Mideast Me Pacific Pa Miscellaneous <no abbreviation> 2) an abbreviation of the city name; we haven't done any research yet of how many letters are needed, but something like a standard airport code could be used here, perhaps with 1-2 additional characters for additional information (for example, Riyadh87 would be RUH87). We are very interested in getting the answer as soon as possible. Thank you, ----------------------------------------- Ilya Shtein Enterprise Software Architecture Metavante Technologies ilya.shtein(a)metavante.com --------------------------------------------------------------------- This message contains confidential and proprietary information of the sender, and is intended only for the person(s) to whom it is addressed. Any use, distribution, copying or disclosure by any other person is strictly prohibited. If you have received this message in error, please notify the e-mail sender immediately, and delete the original message without making a copy.

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Time Zone abbreviations - request
by Ilya.Shtein＠metavante.com Feb. 20, 2008

Feb. 20, 2008

Hello, Our company is in need for standard abbreviations that would map one-to-one to the names used in the Olson database. These abbreviations must be as short as possible and significantly shorter than the conventional Olson names. We can definitely come up with our own abbreviations, but I am wondering if any such abbreviations exist in the Olson db. This is important because we want to be able to point our external partners to a source they are already familiar with, rather than invent something homegrown and impose it on our partners. If such abbreviations do not exist, is it possible to create them? We think it will be beneficial for many users who have space limitations and can't use the Olson names "as is", but need access to the functionality. We are willing to create such list, work with the keepers of the Olson DB to make it official, and maintain the list if needed. One possible implementation could consist of two parts: 1) a two-letter ocean/continent abbreviation: Africa Af America Am Antarctica An Arctic Ar Asia As Atlantic At Australia Au Europe Eu Indian In Mideast Me Pacific Pa Miscellaneous <no abbreviation> 2) an abbreviation of the city name; we haven't done any research yet of how many letters are needed, but something like a standard airport code could be used here, perhaps with 1-2 additional characters for additional information (for example, Riyadh87 would be RUH87). We are very interested in getting the answer as soon as possible. Thank you, ----------------------------------------- Ilya Shtein Enterprise Software Architecture Metavante Technologies ilya.shtein(a)metavante.com --------------------------------------------------------------------- This message contains confidential and proprietary information of the sender, and is intended only for the person(s) to whom it is addressed. Any use, distribution, copying or disclosure by any other person is strictly prohibited. If you have received this message in error, please notify the e-mail sender immediately, and delete the original message without making a copy.

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TZ
by Andrew Novick Feb. 19, 2008

Feb. 19, 2008

Hello, I am Andrew Novick from the NIST Time and Frequency Division. Although we are not an official source for time zones, we do use time zone data for our higher uncertainty time dissemination methods, like the www.time.gov web site. We have been talking to the DOT and GPO about TZ standards. I have not waded through the TZarchive completely, but can you give me a primer on it's reference sources and intent? One of your current interests is whether or not it is imperative to keep 3-letter TZ designations. With zones like Chamorro, Hawaii-Aleutian and Alaska, many sources have used 4-letter designations. Thanks! Andrew Novick NIST novick(a)nist.gov 303-497-3378

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Withdraw logwtmp.c from time zone distribution?
by Olson, Arthur David (NIH/NCI) [E] Feb. 15, 2008

Feb. 15, 2008

The file "logwtmp.c" is part of the time zone package to ensure that a "date" command can be compiled. The time zone Makefile notes that: # We use the system's logwtmp in preference to ours if available. Well then: are there any systems out there today that need the time zone package's version of logwtmp.c? If there aren't, we can drop logwtmp.c from the package. If there are, we need to provide compile-time control over whether time stamps written to the log file are four bytes (to be compatible with historic practice) or eight bytes (the emerging width of time stamps). --ado

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FW: FW: when did China adopt one time zone?
by Olson, Arthur David (NIH/NCI) [E] Feb. 11, 2008

Feb. 11, 2008

I'm forwarding this message from Thomas S. Mullaney, who is not on the time zone mailing list. Those of you who are on the time zone mailing list should direct replies appropriately. --ado -----Original Message----- From: Thomas S. Mullaney [mailto:tsmullaney@stanford.edu] Sent: Monday, February 11, 2008 3:50 To: tz(a)lecserver.nci.nih.gov Cc: tz(a)lecserver.nci.nih.gov Subject: Re: FW: when did China adopt one time zone? I think you're combining two subjects that need to treated separately: daylight savings (which, you're correct, wasn't implemented until the 1980s) and the unified time zone centered near Beijing (which was implemented in 1949). Briefly, there was also a "Lhasa Time" in Tibet and "Urumqi Time" in Xinjiang. The first was ceased, and the second eventually recognized (again, in the 1980s). At 11:50 AM -0800 2/11/08, Paul Eggert wrote: > > From: Thomas S. Mullaney [mailto:tsmullaney@stanford.edu] >> Sent: Friday, February 08, 2008 3:55 > >> This is a project I started thinking about this past summer - a >> fascinating topic, no? > >Yes, quite addictive.... > >Perhaps there is a confusion between two different topics here. The >tz database is mostly concerned with the actual clock settings; it >doesn't record (except in comments) whether the time zone is called >"Beijing Time" or "Beiping Time" or something else. Historically, >Beijing Time (under whatever name) covered just part of the territory >of China; the question the tz database is concerned with is when this >was expanded to include the whole country. You can find a map of the >old "Beiping Time" (perhaps "Chungyuan Time" is a better name) zone in ><http://en.wikipedia.org/wiki/Time_in_China>. What's missing is when >that time zone expanded to included the whole country. > >I just now checked Google News for western news sources that talk >about China's single time zone, and couldn't find anything before 1986 >talking about China being in one time zone. (That article was: Jim >Mann, "A clumsy embrace for another western custom: China on daylight >time--sort of", Los Angeles Times, 1986-05-05. By the way, this >article confirms the tz database's data claiming that China began >observing daylight saving time in 1986.) > >Obviously this simple search isn't conclusive, as it doesn't include >reliable Chinese sources; still, it is not at all clear from the data >mentioned above that China switched to a single time zone in 1949. -- --- Thomas S. Mullaney Assistant Professor Modern Chinese History Department of History Stanford University 450 Serra Mall, Bld 200 Stanford, CA 94305-2024 T (650) 736-8386 F (650) 725-0597

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FW: when did China adopt one time zone?
by Olson, Arthur David (NIH/NCI) [E] Feb. 11, 2008

Feb. 11, 2008

I'm forwarding this message from Thomas S. Mullaney, who is not on the time zone mailing list. Those of you who are on the time zone mailing list should direct replies appropriately. --ado From: Thomas S. Mullaney [mailto:tsmullaney@stanford.edu] Sent: Friday, February 08, 2008 3:55 To: tz(a)lecserver.nci.nih.gov Subject: Re: when did China adopt one time zone? Dear Paul, Thanks for your email. The dating of "Beijing Time" is a little tricky, but thanks to Guo Qingsheng, a scholar and engineer at the Chinese Academy of Sciences Shaanxi Observatory, we know that the implementation of Beijing Time must have come after September 27, 1949 - the date on which the official name of Beiping (Northern Peace) was changed to Beijing (Northern Capital) - and some time before October 7 - the date of the earliest source which Guo has found containing the term "Beijing Time." This is a project I started thinking about this past summer - a fascinating topic, no? Sincerely, Tom Mullaney In a book review in today's issue of _Science_ you reported that the Chinese government in 1949 opted to observe one time zone. This caught my interest because I help maintain the tz database, which records histories of time zone and daylight saving changes all over the world. The tz database is used by computer clocks all over the world, including what I expect are millions of clocks in China, so I'd like to get the details right. Here's the problem: the tz database, following Shanks & Pottenger (2003), records that the China switched to a single time zone on May 1, 1980, not in 1949. Since you are a historian of China I expect that you have a lot better sources than we do. Can you please mention the sources for the claim that the clocks changed in 1949 rather than in 1980? Thanks for any info you can provide. I'll CC: this message to the tz database mailing list, to give them a heads-up on this query. -- Paul Eggert, UCLA Computer Science Dept. References: Thomas S. Mullaney, Change of time over changing time. Science 319 (5864), 729 (2008-02-08), DOI: 10.1126/science.1152851, <http://www.sciencemag.org/cgi/content/full/319/5864/729a>. Paul Eggert & Arthur David Olson, Sources for time zone and daylight saving time data <http://www.twinsun.com/tz/tz-link.htm> (2007-12-31); also see <http://en.wikipedia.org/wiki/Zoneinfo>. Thomas G. Shanks and Rique Pottenger, The International Atlas (6th edition). San Diego: ACS Publications, Inc. (2003). -- --- Thomas S. Mullaney Assistant Professor Modern Chinese History Department of History Stanford University 450 Serra Mall, Bld 200 Stanford, CA 94305-2024 T (650) 736-8386 F (650) 725-0597

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Atendimento online e Rastreador de visitantes
by Chat Comercial Feb. 11, 2008

Feb. 11, 2008

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FW: FW: Corrections to historic German timezone information
by Olson, Arthur David (NIH/NCI) [E] Feb. 11, 2008

Feb. 11, 2008

I'm forwarding this message from Sebastian Wangnick, who is not on the time zone mailing list (at least not at the address below). Those of you who are on the time zone mailing list should direct replies appropriately. --ado -----Original Message----- From: Sebastian Wangnick [mailto:sebastian.nospam01@wangnick.de] Sent: Monday, February 04, 2008 5:09 To: tz(a)lecserver.nci.nih.gov Subject: WG: FW: Corrections to historic German timezone information Dear all, it seems the email below did not reach the mailing list. Kind regards, Sebastian Wangnick -----Ursprüngliche Nachricht----- Von: Sebastian Wangnick [mailto:sebastian.nospam01@wangnick.de] Gesendet: Dienstag, 29. Januar 2008 19:18 An: 'Paul Eggert' Cc: 'tz(a)elsie.nci.nih.gov' Betreff: AW: FW: Corrections to historic German timezone information Dear Paul, I understand your concern. As proposed, the timezone Europe/Berlin would be applicable for the "western" countries of the state of Germany and the western part of Berlin, and Europe/BerlinEast for what was formerly first the Sowjet zone and later the state GDR, namely the "eastern" countries of the state of Germany (Mecklenburg-Vorpommern, Brandenburg, Sachsen, Sachsen-Anhalt, Thüringen) and the eastern part of Berlin. Creation of individual timezones for each of the countries of Germany is thus unneccessary. http://de.wikipedia.org/wiki/Bild:Deutschland_politisch_bunt.png However, if you can maintain only one timezone for the state of Germany, you should probably use the new definition of Europe/Berlin, limiting the error in 1945 to the smaller territory and population, but please note that this would be considered politically incorrect by said population. In this case we will privately maintain a modified copy of the tz database. Kind regards, Sebastian Wangnick

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when did China adopt one time zone?
by Paul Eggert Feb. 8, 2008

Feb. 8, 2008

In a book review in today's issue of _Science_ you reported that the Chinese government in 1949 opted to observe one time zone. This caught my interest because I help maintain the tz database, which records histories of time zone and daylight saving changes all over the world. The tz database is used by computer clocks all over the world, including what I expect are millions of clocks in China, so I'd like to get the details right. Here's the problem: the tz database, following Shanks & Pottenger (2003), records that the China switched to a single time zone on May 1, 1980, not in 1949. Since you are a historian of China I expect that you have a lot better sources than we do. Can you please mention the sources for the claim that the clocks changed in 1949 rather than in 1980? Thanks for any info you can provide. I'll CC: this message to the tz database mailing list, to give them a heads-up on this query. -- Paul Eggert, UCLA Computer Science Dept. References: Thomas S. Mullaney, Change of time over changing time. Science 319 (5864), 729 (2008-02-08), DOI: 10.1126/science.1152851, <http://www.sciencemag.org/cgi/content/full/319/5864/729a>. Paul Eggert & Arthur David Olson, Sources for time zone and daylight saving time data <http://www.twinsun.com/tz/tz-link.htm> (2007-12-31); also see <http://en.wikipedia.org/wiki/Zoneinfo>. Thomas G. Shanks and Rique Pottenger, The International Atlas (6th edition). San Diego: ACS Publications, Inc. (2003).

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WG: FW: Corrections to historic German timezone information
by Sebastian Wangnick Feb. 4, 2008

Feb. 4, 2008

Dear all, it seems the email below did not reach the mailing list. Kind regards, Sebastian Wangnick -----Ursprüngliche Nachricht----- Von: Sebastian Wangnick [mailto:sebastian.nospam01@wangnick.de] Gesendet: Dienstag, 29. Januar 2008 19:18 An: 'Paul Eggert' Cc: 'tz(a)elsie.nci.nih.gov' Betreff: AW: FW: Corrections to historic German timezone information Dear Paul, I understand your concern. As proposed, the timezone Europe/Berlin would be applicable for the "western" countries of the state of Germany and the western part of Berlin, and Europe/BerlinEast for what was formerly first the Sowjet zone and later the state GDR, namely the "eastern" countries of the state of Germany (Mecklenburg-Vorpommern, Brandenburg, Sachsen, Sachsen-Anhalt, Thüringen) and the eastern part of Berlin. Creation of individual timezones for each of the countries of Germany is thus unneccessary. http://de.wikipedia.org/wiki/Bild:Deutschland_politisch_bunt.png However, if you can maintain only one timezone for the state of Germany, you should probably use the new definition of Europe/Berlin, limiting the error in 1945 to the smaller territory and population, but please note that this would be considered politically incorrect by said population. In this case we will privately maintain a modified copy of the tz database. Kind regards, Sebastian Wangnick

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Re: FW: Corrections to historic German timezone information
by Paul Schauble Feb. 4, 2008

Feb. 4, 2008

It might be easier to acknowledge the west/east Berlin split than to figure out which single rule is better. The problem I see is that in reality the presnt day Berlin and the historic Berlin did not exist for 40 years. I am not sure this can be ignored. ++PLS ----- Original Message ----- From: Markus Scherer <markus.icu(a)gmail.com> To: tz(a)lecserver.nci.nih.gov <tz(a)lecserver.nci.nih.gov> Cc: Sebastian Wangnick <sebastian.nospam01(a)wangnick.de>; tz(a)lecserver.nci.nih.gov <tz(a)lecserver.nci.nih.gov> Sent: Sun Feb 03 15:58:24 2008 Subject: Re: FW: Corrections to historic German timezone information On Jan 28, 2008 3:59 PM, Paul Eggert <eggert(a)cs.ucla.edu> wrote: > Because of this rule, the 1945 divergence doesn't justify having two > separate entries for Berlin. However, we should have the correct > entry for Berlin, which raises the question: where is the commonly > accepted center of Berlin? If the center is in the former Soviet > zone, tz's Europe/Berlin should use what is in the proposed > Europe/BerlinEast zone. If Berlin's center is in the former > west-Berlin zone, Europe/Berlin should change to match what is in the > proposed Europe/Berlin zone. I don't quite understand this. I do understand that it's overkill from the perspective of the TZ maintainers to precisely distinguish pre-1970 transitions, but it seems like the question of which part of Berlin to use should not depend as much on where the city center is but on the political continuity. markus -- Opinions expressed here may not reflect my company's positions unless otherwise noted.

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FW: Corrections to historic German timezone information
by Olson, Arthur David (NIH/NCI) [E] Feb. 3, 2008

Feb. 3, 2008

I'm forwarding this message from Sebastian Wangnick, who is not on the time zone mailing list. Those of you who are on the time zone mailing list should direct replies appropriately. --ado From: Sebastian Wangnick [mailto:sebastian.nospam01@wangnick.de] Sent: Sunday, January 27, 2008 2:02 To: tz(a)lecserver.nci.nih.gov Cc: time(a)ptb.de Subject: Corrections to historic German timezone information Dear Madam, dear Sir, I understand that the historic time zone database you maintain is the basis of calendar computations in many computer systems and programming languages, including Linux and Tcl. We are using said data in some of our applications. Many thanks for your effort. Please find attached a few modifications to your tz2007k data files, so as to bring them in line with the publications of the Arbeitsgruppe 4.41 of the Physikalisch-Technische Bundesanstalt at http://www.ptb.de/de/org/4/44/441/salt.htm. The mistake in tz2007k is that the special 1945 rules for East Berlin and the German Sowjet Zone mentioned in bullet point c) of the website above are applied to Germany in general. The modifications return Europe/Berlin to the standard rules a) and b), and introduce a new zone Europe/BerlinEast where a), b) and c) are applied. Cc to the PTB for information. Kind regards, Sebastian Wangnick -- Sebastian Wangnick Lammersdorfer Str. 61 D-52159 Roetgen/Rott

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Fw: GUATEMALA from DST 30 APR to 29 SEP 2008
by Gwillim Law Feb. 3, 2008

Feb. 3, 2008

Risto Nykänen wrote me that Guatemala is going to observe DST from 2008-04-30 to 2008-09-29. Searching for confirmation, I found an article at http://www.prensalibre.com/pl/2008/enero/29/217165.html, apparently from a Guatemalan newspaper. It says: "El Gobierno guatemalteco adelantará la hora oficial en a partir del 30 de abril en un intento por reducir la demanda de energía eléctrica. "'Ya es un hecho, se va a cambiar a finales de abril para tener horario de verano', dijo el vocero presidencial Fernando Barillas. "Con la medida el ejecutivo espera obtener un ahorro de 60 megavatios diarios entre el 30 de abril y el 30 de septiembre, cuando termine el horario especial. ..." My translation: "The Guatemalan government will advance official time starting on April 30 in an initiative to reduce demand for electrical energy. "'It is already a done deed, we are going to change at the end of April to observe summer time', the presidential spokesman Fernando Barillas said. "With this measure the executive hopes to save 60 megawatts a day between April 30 and September 30, when the special schedule ends." Gwillim Law

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Another developer writing code to use the tz database
by Goudge, Stephen Jan. 28, 2008

Jan. 28, 2008

Hello, I'd like to express my gratitude and admiration to all the contributors to the time zone database. I am working to make use of the tzdata* information to attach timezone data plus a UTC timestamp to video recordings made by a DVR and to then, during playback, display the correct local time to match the video irrespective of the timezone settings on the playback computer. To fit the needs of the DVR, instead of storing an id string we have to store (at most) a 16-bit integer, so there is a C enum plus lookup table to map from these integer 'tz codes' to string ids that can be matched against the names in the tzdata files. So obviously there is an immediate maintenance need to keep the enum and mapping in step with tzdata - and this has an interesting correspondence to the declared needs of the CLDR project in terms of the stability of the tz id strings... For various reasons, including the need for playback to operate under Windows and to fit the new functionality into an existing code base, I opted to modify 'zic' and all the time functions (localtime etc). The time functions are changed to remove the limitations of the Posix approach (setting a global TZ, formatting one time value, resetting the global TZ...) and to convert the representation from time_t to the one we use internally (effectively Windows FILETIME as a 64-bit value); the results have then been attached to the C++ 'time' classes we use. 'zic' was then modified to change the epoch etc to match FILETIME and then, as I really didn't want to dump a load of settings into the Registry nor create a raft of files to tempt our Users to fiddle, write out a single Zip archive with the compiled tz data. Both of these items - the C library containing the enum and the C++ library with modified 'zic' etc - are Open Source, although I haven't "published" them on any websites or repositories (well, not recently enough to contain these TZ related tweaks). I would welcome any interest in seeing this code, if only to give the impetus to tidy it up well enough to "publish" (although, a warning, this is "Yet Another Pile of Someone's Favourite Stuff" and the TZ materials are currently fairly well integrated into the middle of it all). Regards, Stephen Goudge Transport R&D Petards Joyce-Loebl Gateshead, UK Private, Confidential and Privileged. This e-mail and any files and attachments transmitted with it are confidential and/or privileged. They are intended solely for the use of the intended recipient(s). The content of this e-mail and any file or attachment transmitted with it may have been changed or altered without the consent of the author. If you are not the intended recipient, please note that any review, dissemination, disclosure, alteration, printing, circulation or transmission of this e-mail and/or any file or attachment transmitted with it, is prohibited and may be unlawful. If you have received this e-mail or any file or attachment transmitted with it in error please notify the IT Manager, Petards Joyce-Loebl Limited, 390 Princesway, Gateshead, NE11 0TU, telephone no: +44 191 4203000. Petards Joyce-Loebl Limited is registered in England under number 2170100 DISCLAIMER: Privileged / Confidential Information may be contained in this message. If you are not the addressee indicated in this message (or responsible for delivery of the message to such person), you may not copy or deliver this message to anyone. In such case, you should destroy this message and kindly notify the sender by reply email. Please advise immediately if you or your employer do not consent to Internet email messages of this kind. Opinions, conclusions and other information in this message that do not relate to the official business of my company shall be understood as neither given nor endorsed by it. _____________________________________________________________________________________ This email has been scanned by Petards Joyce-Loebl. The service is powered by MessageLabs Email Security System. For more information please visit http://www.messagelabs.com/email. _____________________________________________________________________________________

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