April 2011 - tz - lists.iana.org

2001g
by Olson, Arthur David (NIH/NCI) [E] April 28, 2011

April 28, 2011

The files... ftp://elsie.nci.nih.gov/pub/tzcode2011g.tar.gz ...and... ftp://elsie.nci.nh.gov/pub/tzdata2011g.tar.gz ...are now available; these reflect the changes circulated last week on the time zone mailing list (and, in particular, update the rules for Egypt to reflect its abandonment of DST this year). --ado

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Re: bug report for tzdata 2010o-0lenny1
by Clint Adams April 27, 2011

April 27, 2011

On Wed, Apr 27, 2011 at 11:57:47AM +0200, paul salber wrote: > I am using tzdata 2010o-0lenny1, and the time offset for Western Sahara, > should not be WET (+0 hours), but WST (+1 hours). Have you updated this in > 2011g-1? I cannot find it in the changelog Do you have information about this change, including references to official communications? Please Cc the tz list.

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Where to find timezone database change for each version
by Na Liu April 26, 2011

April 26, 2011

Hi, Where can I find the timezone database change for each version? Thanks Na

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No daylight saving in Egypt
by Angie T. Muhammad April 24, 2011

April 24, 2011

Hello TZ data list, Four days ago the Egyptian authorities issued a bill cancelling daylight saving time. I am sorry if the topic is a duplicate but here<http://english.ahram.org.eg/NewsContent/1/64/10419/Egypt/Politics-/Egypt-ca…>is a link - in English - to the news by Al Ahram newspaper. Regards, -- All the best, Angie T. Muhammad http://angie-tawfik.blogspot.com

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proposed time zone package changes (Egypt et al.)
by Arthur David Olson April 21, 2011

April 21, 2011

Here are proposed changes to the time zone package; the executive summary: Makefile change GCC_DEBUG_FLAGS rule for more warnings africa Egypt abandons DST in 2011 (and forward) (thanks to Alexander Krivenyshev) localtime.c recode increment_overflow and long_increment_overflow to eliminate gcc warnings (thanks to Paul Eggert) europe eliminate doubled words (thanks to Jim Meyering) southamerica eliminate doubled words (thanks to Jim Meyering) The "africa" changes do affect time stamps in Egypt in 2011 (and forward). Given the short notice on the Egyptian changes...if no problems are found, the ftp site will be updated on 2011-04-25. (Then maybe silly season will be over and I can clear out the non-time-sensitive stuff from the pipeline.) --ado diff -r -c old/Makefile new/Makefile *** old/Makefile Thu Dec 16 12:11:21 2010 --- new/Makefile Thu Apr 14 12:42:47 2011 *************** *** 1,5 **** # <pre> ! # @(#)Makefile 8.9 # This file is in the public domain, so clarified as of # 2009-05-17 by Arthur David Olson. --- 1,5 ---- # <pre> ! # @(#)Makefile 8.10 # This file is in the public domain, so clarified as of # 2009-05-17 by Arthur David Olson. *************** *** 116,122 **** # -DZIC_MAX_ABBR_LEN_WO_WARN=3 # (or some other number) to set the maximum time zone abbreviation length # that zic will accept without a warning (the default is 6) ! GCC_DEBUG_FLAGS = -Dlint -g -O -fno-common \ -Wall -Wcast-qual -Wconversion -Wmissing-prototypes \ -Wnested-externs -Wpointer-arith -Wshadow \ -Wtraditional # -Wstrict-prototypes -Wwrite-strings --- 116,122 ---- # -DZIC_MAX_ABBR_LEN_WO_WARN=3 # (or some other number) to set the maximum time zone abbreviation length # that zic will accept without a warning (the default is 6) ! GCC_DEBUG_FLAGS = -Dlint -g -O3 -fno-common \ -Wall -Wcast-qual -Wconversion -Wmissing-prototypes \ -Wnested-externs -Wpointer-arith -Wshadow \ -Wtraditional # -Wstrict-prototypes -Wwrite-strings diff -r -c old/africa new/africa *** old/africa Wed Mar 30 15:29:23 2011 --- new/africa Wed Apr 20 12:48:41 2011 *************** *** 1,5 **** # <pre> ! # @(#)africa 8.30 # This file is in the public domain, so clarified as of # 2009-05-17 by Arthur David Olson. --- 1,5 ---- # <pre> ! # %W% # This file is in the public domain, so clarified as of # 2009-05-17 by Arthur David Olson. *************** *** 212,218 **** Rule Egypt 1990 1994 - May 1 1:00 1:00 S # IATA (after 1990) says transitions are at 0:00. # Go with IATA starting in 1995, except correct 1995 entry from 09-30 to 09-29. ! Rule Egypt 1995 max - Apr lastFri 0:00s 1:00 S Rule Egypt 1995 2005 - Sep lastThu 23:00s 0 - # From Steffen Thorsen (2006-09-19): # The Egyptian Gazette, issue 41,090 (2006-09-18), page 1, reports: --- 212,232 ---- Rule Egypt 1990 1994 - May 1 1:00 1:00 S # IATA (after 1990) says transitions are at 0:00. # Go with IATA starting in 1995, except correct 1995 entry from 09-30 to 09-29. ! ! # From Alexander Krivenyshev (2011-04-20): ! # "...Egypt's interim cabinet decided on Wednesday to cancel daylight ! # saving time after a poll posted on its website showed the majority of ! # Egyptians would approve the cancellation." ! # ! # Egypt to cancel daylight saving time ! # <a href="http://www.almasryalyoum.com/en/node/407168"> ! # http://www.almasryalyoum.com/en/node/407168 ! # </a> ! # or ! # <a href="http://www.worldtimezone.com/dst_news/dst_news_egypt04.html"> ! # http://www.worldtimezone.com/dst_news/dst_news_egypt04.html ! # </a> ! Rule Egypt 1995 2010 - Apr lastFri 0:00s 1:00 S Rule Egypt 1995 2005 - Sep lastThu 23:00s 0 - # From Steffen Thorsen (2006-09-19): # The Egyptian Gazette, issue 41,090 (2006-09-18), page 1, reports: *************** *** 313,319 **** Rule Egypt 2009 only - Aug 20 23:00s 0 - Rule Egypt 2010 only - Aug 11 0:00 0 - Rule Egypt 2010 only - Sep 10 0:00 1:00 S ! Rule Egypt 2010 max - Sep lastThu 23:00s 0 - # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Africa/Cairo 2:05:00 - LMT 1900 Oct --- 327,333 ---- Rule Egypt 2009 only - Aug 20 23:00s 0 - Rule Egypt 2010 only - Aug 11 0:00 0 - Rule Egypt 2010 only - Sep 10 0:00 1:00 S ! Rule Egypt 2010 only - Sep lastThu 23:00s 0 - # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Africa/Cairo 2:05:00 - LMT 1900 Oct diff -r -c old/europe new/europe *** old/europe Thu Mar 31 16:04:14 2011 --- new/europe Thu Apr 14 16:07:06 2011 *************** *** 1,5 **** # <pre> ! # @(#)europe 8.31 # This file is in the public domain, so clarified as of # 2009-05-17 by Arthur David Olson. --- 1,5 ---- # <pre> ! # @(#)europe 8.32 # This file is in the public domain, so clarified as of # 2009-05-17 by Arthur David Olson. *************** *** 146,152 **** # A monument to Willett was unveiled on 1927-05-21, in an open space in # a 45-acre wood near Chislehurst, Kent that was purchased by popular # subscription and open to the public. On the south face of the monolith, ! # designed by G. W. Miller, is the the William Willett Memorial Sundial, # which is permanently set to Summer Time. # From Winston Churchill (1934-04-28): --- 146,152 ---- # A monument to Willett was unveiled on 1927-05-21, in an open space in # a 45-acre wood near Chislehurst, Kent that was purchased by popular # subscription and open to the public. On the south face of the monolith, ! # designed by G. W. Miller, is the...William Willett Memorial Sundial, # which is permanently set to Summer Time. # From Winston Churchill (1934-04-28): *************** *** 1786,1792 **** # # All these events predate our cutoff date of 1970. Unless we can # come up with more definitive info about the timekeeping during the ! # war years it's probably best just do do the following for now: Link Europe/Oslo Arctic/Longyearbyen # Poland --- 1786,1792 ---- # # All these events predate our cutoff date of 1970. Unless we can # come up with more definitive info about the timekeeping during the ! # war years it's probably best just do...the following for now: Link Europe/Oslo Arctic/Longyearbyen # Poland diff -r -c old/localtime.c new/localtime.c *** old/localtime.c Tue Jan 25 16:08:41 2011 --- new/localtime.c Fri Apr 15 16:32:47 2011 *************** *** 5,11 **** #ifndef lint #ifndef NOID ! static char elsieid[] = "@(#)localtime.c 8.16"; #endif /* !defined NOID */ #endif /* !defined lint */ --- 5,11 ---- #ifndef lint #ifndef NOID ! static char elsieid[] = "@(#)localtime.c 8.17"; #endif /* !defined NOID */ #endif /* !defined lint */ *************** *** 1613,1643 **** #endif /* !defined WRONG */ /* ! ** Simplified normalize logic courtesy Paul Eggert. */ static int ! increment_overflow(number, delta) ! int * number; ! int delta; { ! int number0; ! number0 = *number; ! *number += delta; ! return (*number < number0) != (delta < 0); } static int ! long_increment_overflow(number, delta) ! long * number; ! int delta; { ! long number0; ! number0 = *number; ! *number += delta; ! return (*number < number0) != (delta < 0); } static int --- 1613,1651 ---- #endif /* !defined WRONG */ /* ! ** Normalize logic courtesy Paul Eggert. */ static int ! increment_overflow(ip, j) ! int * const ip; ! int j; { ! register int const i = *ip; ! /* ! ** If i >= 0 there can only be overflow if i + j > INT_MAX ! ** or if j > INT_MAX - i; given i >= 0, INT_MAX - i cannot overflow. ! ** If i < 0 there can only be overflow if i + j < INT_MIN ! ** or if j < INT_MIN - i; given i < 0, INT_MIN - i cannot overflow. ! */ ! if ((i >= 0) ? (j > INT_MAX - i) : (j < INT_MIN - i)) ! return TRUE; ! *ip += j; ! return FALSE; } static int ! long_increment_overflow(lp, m) ! long * const lp; ! int const m; { ! register long const l = *lp; ! if ((l >= 0) ? (m > LONG_MAX - l) : (m < LONG_MIN - l)) ! return TRUE; ! *lp += m; ! return FALSE; } static int diff -r -c old/southamerica new/southamerica *** old/southamerica Wed Apr 6 17:14:53 2011 --- new/southamerica Thu Apr 14 16:07:06 2011 *************** *** 1,5 **** # <pre> ! # @(#)southamerica 8.48 # This file is in the public domain, so clarified as of # 2009-05-17 by Arthur David Olson. --- 1,5 ---- # <pre> ! # @(#)southamerica 8.49 # This file is in the public domain, so clarified as of # 2009-05-17 by Arthur David Olson. *************** *** 745,751 **** # # As a result of the above Decree I believe the America/Rio_Branco # timezone shall be modified from UTC-5 to UTC-4 and a new timezone shall ! # be created to represent the the west side of the Para State. I # suggest this new timezone be called Santarem as the most # important/populated city in the affected area. # --- 745,751 ---- # # As a result of the above Decree I believe the America/Rio_Branco # timezone shall be modified from UTC-5 to UTC-4 and a new timezone shall ! # be created to represent the...west side of the Para State. I # suggest this new timezone be called Santarem as the most # important/populated city in the affected area. #

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FW: Clocks in Novosibirsk in 1957
by Olson, Arthur David (NIH/NCI) [E] April 21, 2011

April 21, 2011

I'm forwarding this message from Mark Brader, who is not on the time zone mailing list. Those of you who are on the list, please direct replies appropriately. --ado ________________________________________ From: Mark Brader [msb(a)vex.net] Sent: Wednesday, April 20, 2011 7:49 PM To: Olson, Arthur David (NIH/NCI) [E] Subject: Clocks in Novosibirsk in 1957 Here is an item I found accidentally on page 16 of the (Toronto) Globe and Mail for April 25, 1957, while I was searching online for another topic. I thought the members of TZ might be interested in the Novosibirsk part and amused by the rest. Please forward to the list if you think appropriate. I am not on the list; replies should be directed accordingly. I have not gone to the library to locate the cited article in Maclean's (a Canadian newsmagazine). There may be small errors due to the scan not being fully legible as well as my own errors in typing. # Only an Hour Apart # Clocks in Novosibirsk # Comparatively Simple # # by MAGGIE GRANT # # In a recent issue of Maclean's Magazine, Blair Fraser mentions the # plight of citizens of Novosibirsk, Siberia, who for 38 years have # had the clocks at the east end of their city one hour faster than # those of the west end. # # This is due to a time boundary running smack through the middle # of the city, and Mr. Fraser dubs the Novosibirskites the "world's # most patient people" for putting up with this situation for so long. # # Now, I sympathize with Siberian citizens on almost every count, # but I cannot shed any tears over this one. Having a city's clocks # exactly one hour apart for 38 years sounds like an ideal arrangement # to me. I'm certain that a normally intelligent person would take # no more than a few days to catch on to the time differential, # and surely any dunce would know which end of the city was which. # # Therefore, a western Novosibirskite, caught in the eastern end # of town, would in all probability do little more than glance at # a clock before exclaiming: # # "Zlug' Krztoxni ghow'. Qwetevinoff da gmuy zlot pzis ud gvenn!" # Which translated means: "By Jove! A quarter to eight! I must # hurry if I am to be home for dinner at seven!" # # Compared to this simple situation, consider the trials to which # I am subjected by the timepieces under my roof. # # There is the grandfather clock in the hall, for instance, a family # heirloom and a charming thing to look upon. But the poor old dear # has never recovered from the shock of being moved from Mother's # house to mine, and simply cannot keep itself going. I have long # ago written it off as a deadhead, but Mother is a tenacious soul, # and every once in a while she hopefully sets the pendulum in motion. # If she would only warn me on these occasions, I would not be so # alarmed when it suddenly bongs out some totally irrelevant hour. # # The Empire clock on the mantel, on the other hand, has a # delightfully silvery voice. It keeps accurate time, too, but is # addicted to flipping its minute hand into the fireplace at frequent # intervals. These occurrences are apt to go unnoticed until the # time is urgently needed to set other clocks, when the cry goes up: # "The hand! The hand! It's off again!" and all activity ceases # in favor of ash-sifting. The offending member, once retrieved, # is dusted off and replaced on the dial at the time we presume to # be correct, but which seldom is. # # Another horological eccentric hangs on the kitchen wall, an electric # model in perky red and white to match the decor. Unfortunately it # got knocked down one day, and although we put it all together as # best we could, it has observed none of the laws of Greenwich since. # # You can look at that clock one minute and it will point to 12:10, # but three minutes later, glancing at it again, you will discover # that it has moved on to 4:30. Never once have I caught it in the # act of whizzing from point to point, and this I regret, because # I am sure it would be a challenging experience. # # The other electric timepiece is immobilized once a week by # Mrs. Swallow, the charlady, who favors its especial wall plug # above all others for vacuum cleaning activities. # # Further undependables about the place are two travelling clocks that # run for 18 and 15 hours respectively, and a wristwatch that is good # for only 11. Under these circumstances, I consider it rather unfair # of people to call me Laggy Maggie. After all, I do the very best # I can by going from room to room, jotting down the various times, # adding them up, and then striking an average. Although I admit the # system is far from perfect, it's the best I've been able to devise. # # I wonder if somebody in Novosibirsk can offer a better one? -- Mark Brader, Toronto "Don't be silly -- send it to Canada" msb(a)vex.net -- British postal worker

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Egypt DST cancelled
by Abdelrahman Hassan April 20, 2011

April 20, 2011

Egypt's interim government has canceled DST in Egypt. Attached patch correspondingly updates the "africa" timezone file. http://english.ahram.org.eg/NewsContent/1/64/10419/Egypt/Politics-/Egypt-ca…

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Egypt interim cabinet decided to cancel DST
by Alexander Krivenyshev April 20, 2011

April 20, 2011

" ... Egypt's interim cabinet decided on Wednesday to cancel daylight saving time after a poll posted on its website showed the majority of Egyptians would approve the cancellation. Egypt to cancel daylight saving time http://www.almasryalyoum.com/en/node/407168 or http://www.worldtimezone.com/dst_news/dst_news_egypt04.html Alexander Krivenyshev, http://www.worldtimezone.com

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Did Irkutsk NOT switch from IRKT to KRAST?
by Tim Parenti April 19, 2011

April 19, 2011

I've been alerted to a couple reports that on 2011-03-22, the Russian government decided NOT to allow the Irkutsk Oblast to transition from IRKT (UTC+8) to KRAST (UTC+7+1) on 2011-03-27, and that instead Irkutsk transitioned to IRKST (UTC+8+1) under the existing Russian DST rules and plans to stay there for the time being like the rest of the country. The articles are in Russian, which I don't speak, but I've provided excerpted Google translations below. The reports follow: http://www.irk.ru/news/20110325/time/ (2011-03-25) Irkutsk region remains in its time zone March 27 residents of the Irkutsk region with the rest of the Russians set the clock forward one hour. Previously reported that the Angara will not translate clock to daylight saving time and thereby reduce the difference with Moscow, with 5:00 to 4. Irkutsk officials have prepared all necessary documents. However, an official decision on this has not been signed. In this case, the matter has not withdrawn completely, but only postponed indefinitely. http://gazetavremya.ru/day/16739-irkutskaya-oblast-poteryalas-vo-vremeni.ht… Irkutsk region is lost in time After that we asked for comments to the Legislative Assembly of Irkutsk region Yuri Faleichik, who confirmed this information and added that it is the most painless for our scheme to reduce the time difference with the capital from 5 to 4 hours. And suddenly, on Tuesday revealed that information on the transition to Krasnoyarsk time was premature! The same Jury Faleichik told our newspaper: - The decision to move the Irkutsk region in the time zone of the Krasnoyarsk Territory Government is not accepted. Our source in the regional government said that the decision "not to move to Krasnoyarsk time" was made in connection with the upcoming elections. -- Tim Parenti

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Re: Samoa's plans to shift the Inetrnational Dateline
by Gwillim Law April 19, 2011

April 19, 2011

The International Date Line is not defined by any international law or treaty. It is an arbitrary line drawn by cartographers, separating lands in the Pacific Ocean whose standard time is later than UTC from those whose standard time is earlier than UTC. Therefore, if Samoa decides to shift its standard time from UTC-11 to UTC+13, the cartographers will simply redraw the line to the east of Samoa. The same thing happened in 1995, when Kiribati changed the date for its eastern island groups. The Line Islands and the Phoenix Islands had been observing a different date, one day earlier than the Gilbert Islands where most of the people of Kiribati lived. In 1995, the Line and Phoenix groups were shifted forward by one day. They didn't need the approval of any international agency. In response, new maps began appearing with a large displacement in the International Date Line, skirting all of Kiribati along the country's eastern limit. "... the term 'International Date Line' is thus in fact a misnomer. Its exact course was never defined by any international treaty, law or agreement." (http://www.phys.uu.nl/~vgent/idl/idl.htm) "The IDL drawn on the map on this page and all other maps is now and always has been an artificial construct of cartographers-the precise course of the line in international waters is arbitrary. No international organization nor any treaty between nations has fixed the "straight line" segments and their junctions. All nations unilaterally determine their standard time zones..." (http://en.wikipedia.org/wiki/International_Date_Line) I hope that addresses your question adequately. Yours, Gwillim Law ----- Original Message ----- From: Leilani Tuala Warren The Samoa law Reform Commission has been tasked with looking into how Samoa can shift the international dateline so that it is in the same time zone as NZ, Fiji and Tonga rather than USA. Can we please enter into some dialogue as to how this can be done on a global scale?

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