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Airport Time Zones
by Bill Seymour April 13, 2011

April 13, 2011

Does anyone on the list know of a way to cross-reference IATA airport codes to tz zone names? Thanks, --Bill Seymour

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Compiler Warnings
by Andy Heninger April 13, 2011

April 13, 2011

Here are some compiler warnings that it would probably be good to be rid of. The compiler is optimizing away intended overflow tests in some cases. Results of integer operations are officially undefined when overflow occurs, so the compiler is within its rights in making this kind of assumption. $ gcc -Wall -O3 -c *.c localtime.c: In function ‘timesub’: localtime.c:1541: warning: assuming signed overflow does not occur when assuming that (X + c) < X is always false localtime.c:1545: warning: assuming signed overflow does not occur when assuming that (X - c) > X is always false localtime.c: In function ‘T.144’: localtime.c:1727: warning: assuming signed overflow does not occur when assuming that (X + c) < X is always false localtime.c:1738: warning: assuming signed overflow does not occur when assuming that (X + c) < X is always false localtime.c:1748: warning: assuming signed overflow does not occur when assuming that (X + c) < X is always false localtime.c:1752: warning: assuming signed overflow does not occur when assuming that (X - c) > X is always false localtime.c:1768: warning: assuming signed overflow does not occur when assuming that (X - c) > X is always false zdump.c: In function ‘main’: zdump.c:442: warning: assuming signed overflow does not occur when assuming that (X - c) > X is always false $ gcc --version gcc (Ubuntu 4.4.3-4ubuntu5) 4.4.3 -- Andy Heninger

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doubled-word typos in timezone/europe and southamerica
by Jim Meyering April 11, 2011

April 11, 2011

This fixes three instances of doubled words in the "europe" and "southamerica" files. I noticed these in glibc's files, which may well be out of date. FYI, I ran this command to spot candidates: git ls-files |xargs perl -0777 -n \ -e 'while (/\b(then?|[iao]n|i[fst]|but|f?or|at|and|[dt]o)\s+\1\b/gims)' \ -e '{$n=($` =~ tr/\n/\n/ + 1); ($v=$&)=~s/\n/\\n/g;' \ -e 'print "$ARGV:$n:$v\n"}' -------------------------- Remove doubled words in comments, e.g., s/do do/do/, s/the the/the/ diff --git a/europe b/europe index 3f39215..2bec186 100644 --- a/europe +++ b/europe @@ -146,7 +146,7 @@ # 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, +# designed by G. W. Miller, is the William Willett Memorial Sundial, # which is permanently set to Summer Time. # From Winston Churchill (1934-04-28): @@ -1761,7 +1761,7 @@ Zone Europe/Oslo 0:43:00 - LMT 1895 Jan 1 # # 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: +# war years it's probably best just do the following for now: Link Europe/Oslo Arctic/Longyearbyen # Poland diff --git a/southamerica b/southamerica index 341e57f..96d844e 100644 --- a/southamerica +++ b/southamerica @@ -682,7 +682,7 @@ Zone America/La_Paz -4:32:36 - LMT 1890 # # 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 +# 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: last call for draft-lear-iana-timezone-database-03
by Eliot Lear April 11, 2011

April 11, 2011

Hi everyone, We need your help. We have made substantial progress in seeing to a permanent home for the TZ database and mailing list after Arthur David Olson's retirement. The announcement below indicates that the Internet Engineering Steering Group (IESG) is now asking for feedback on the proposal, which is for the function to be homed by the IANA (Internet Assigned Numbers Authority). The intent, again, is to document existing practice, and to establish a succession process. Now is the time for you to signify your agreement or disagreement with this proposal. Please send your comments to ietf(a)ietf.org, perhaps copying this mailing list. The IESG needs to hear from you as the most impacted community. Please do let them know what you think. Eliot On 4/11/2011 8:31 AM, The IESG wrote: > > The IESG has received a request from an individual submitter to consider > the following document: > - 'IANA Procedures for Maintaining the Timezone Database' > <draft-lear-iana-timezone-database-03.txt> as a BCP > > The IESG plans to make a decision in the next few weeks, and solicits > final comments on this action. Please send substantive comments to the > ietf(a)ietf.org mailing lists by 2011-05-09. Exceptionally, comments may be > sent to iesg(a)ietf.org instead. In either case, please retain the > beginning of the Subject line to allow automated sorting. > > The file can be obtained via > http://datatracker.ietf.org/doc/draft-lear-iana-timezone-database/ > > IESG discussion can be tracked via > http://datatracker.ietf.org/doc/draft-lear-iana-timezone-database/ > > > > No IPR declarations have been submitted directly on this I-D. > _______________________________________________ > IETF-Announce mailing list > IETF-Announce(a)ietf.org > https://www.ietf.org/mailman/listinfo/ietf-announce >

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FW: Test cases for zoneinfo data
by Olson, Arthur David (NIH/NCI) [E] April 10, 2011

April 10, 2011

I'm forwarding this message from Christopher Hunt, who is not on the time zone mailing list. Those of you who are on the list, please direct replies appropriately. --ado -----Original Message----- From: Christopher Hunt [mailto:huntc@internode.on.net] Sent: Thursday, December 16, 2010 12:15 To: tz(a)lecserver.nci.nih.gov Subject: Test cases for zoneinfo data Hi there, I'm creating a set of Java classes that closely reflect the structure of the Zoneinfo database. My requirement is driven mostly by wanting to dynamically update Java TimeZone classes i.e. as opposed to compiling a zoneinfo data and re-starting my application. In addition I feel that the ICU and Sun classes do not accurately reflect Zoneinfo structures. I shall open-source this project once it gets to a working point. It'd be terribly helpful if I could get hold of some test cases, automated or otherwise, that verify correct time zone calculations. Would anyone out there have such things? Kind regards, Christopher

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FW: Zoneinfo TZ v1.0.0 is now available
by Olson, Arthur David (NIH/NCI) [E] April 10, 2011

April 10, 2011

I'm forwarding this message from Christopher Hunt, who is not on the time zone mailing list. Those of you who are on the list, please direct replies appropriately. --ado -----Original Message----- From: Christopher Hunt [mailto:huntc@internode.on.net] Sent: Sunday, April 10, 2011 5:35 AM To: tz(a)lecserver.nci.nih.gov Subject: Zoneinfo TZ v1.0.0 is now available Hi there, I've now made my Java implementation of a Zoneinfo parser and java.util.TimeZone facade available as open source via The Codehaus. My implementation closely honours the domain model of Zoneinfo. My project can be found at: http://zoneinfo-tz.codehaus.org/ I was wondering if the Zoneinfo website could be updated to include a link to it under the "Other tz- based time zone software" heading, and possibly just underneath the Sun Java line. Thanks for the consideration! Kind regards, Christopher

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Zoneinfo TZ v1.0.0 is now available
by Christopher Hunt April 10, 2011

April 10, 2011

Hi there, I've now made my Java implementation of a Zoneinfo parser and java.util.TimeZone facade available as open source via The Codehaus. My implementation closely honours the domain model of Zoneinfo. My project can be found at: http://zoneinfo-tz.codehaus.org/ I was wondering if the Zoneinfo website could be updated to include a link to it under the "Other tz- based time zone software" heading, and possibly just underneath the Sun Java line. Thanks for the consideration! Kind regards, Christopher

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Re: www.twinsun.com down
by Christopher Hunt April 10, 2011

April 10, 2011

Hi there, Any further advice on this? I noticed it was down too and, while it doesn't effect the ftp site, it is a little disconcerting. After all, zoneinfo is incredibly important! Going forward, do you see that there could be a more appropriate place for the zoneinfo website and its corresponding ftp site to live (even if it is just from a DNS perspective)? Kind regards, Christopher

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Ukraine's parliament registered a draft resolution to cancel seasonal clock change
by Alexander Krivenyshev April 6, 2011

April 6, 2011

The Verkhovna Rada of Ukraine (Ukraine's parliament) registered a draft resolution to cancel seasonal clock change and to establish Ukraine time as second time zone plus one hour. <br> If current resolution will be approved, Ukraine will not switch to winter time anymore and "standard" time will be changed from UTC+2 to UTC+3. Reference from The Verkhovna Rada of Ukraine (Ukraine's parliament) (in Ukrainian): http://gska2.rada.gov.ua:7777/pls/zweb_n/webproc4_1?id=&pf3511=40036 and draft resolution (in Ukrainian): http://gska2.rada.gov.ua:7777/pls/zweb_n/webproc34? id=&pf3511=40036&pf35401=188537 Proposal to Parliament do not switch to Winter time anymore (in Russian): http://for-ua.com/ukraine/2011/04/06/151554.html or http://www.worldtimezone.com/dst_news/dst_news_ukraine03.html " ... From 27 March 2011 set Ukraine time as second time zone plus one hour..." Alexander Krivenyshev, http://www.worldtimezone.com

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proposed time zone package change (Falklands)
by Arthur David Olson April 6, 2011

April 6, 2011

Here are proposed changes to the "southamerica" file to reflect the decision to remain on DST throughout 2011 on a trial basis. If no problems are found, I'll update the ftp site on 2011-04-11 (before 2011-04-17, which is when the change first matters). --ado ------- southamerica ------- *** /tmp/geta7392 Wed Apr 6 17:15:05 2011 --- /tmp/getb7392 Wed Apr 6 17:15:05 2011 *************** *** 1,5 **** # <pre> ! # @(#)southamerica 8.47 # This file is in the public domain, so clarified as of # 2009-05-17 by Arthur David Olson. --- 1,5 ---- # <pre> ! # @(#)southamerica 8.48 # This file is in the public domain, so clarified as of # 2009-05-17 by Arthur David Olson. *************** *** 1343,1348 **** --- 1343,1366 ---- # For now, we'll just record the time in Stanley, since we have no # better info. + # From Steffen Thorsen (2011-04-01): + # The Falkland Islands will not turn back clocks this winter, but stay on + # daylight saving time. + # + # One source: + # <a href="http://www.falklandnews.com/public/story.cfm?get=5914&source=3"> + # http://www.falklandnews.com/public/story.cfm?get=5914&source=3 + # </a> + # + # We have gotten this confirmed by a clerk of the legislative assembly: + # Normally the clocks revert to Local Mean Time (UTC/GMT -4 hours) on the + # third Sunday of April at 0200hrs and advance to Summer Time (UTC/GMT -3 + # hours) on the first Sunday of September at 0200hrs. + # + # IMPORTANT NOTE: During 2011, on a trial basis, the Falkland Islands + # will not revert to local mean time, but clocks will remain on Summer + # time (UTC/GMT - 3 hours) throughout the whole of 2011. Any long term + # change to local time following the trial period will be notified. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Falk 1937 1938 - Sep lastSun 0:00 1:00 S Rule Falk 1938 1942 - Mar Sun>=19 0:00 0 - *************** *** 1354,1360 **** Rule Falk 1984 only - Sep 16 0:00 1:00 S Rule Falk 1985 2000 - Sep Sun>=9 0:00 1:00 S Rule Falk 1986 2000 - Apr Sun>=16 0:00 0 - ! Rule Falk 2001 max - Apr Sun>=15 2:00 0 - Rule Falk 2001 max - Sep Sun>=1 2:00 1:00 S # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Atlantic/Stanley -3:51:24 - LMT 1890 --- 1372,1379 ---- Rule Falk 1984 only - Sep 16 0:00 1:00 S Rule Falk 1985 2000 - Sep Sun>=9 0:00 1:00 S Rule Falk 1986 2000 - Apr Sun>=16 0:00 0 - ! Rule Falk 2001 2010 - Apr Sun>=15 2:00 0 - ! Rule Falk 2012 max - Apr Sun>=15 2:00 0 - Rule Falk 2001 max - Sep Sun>=1 2:00 1:00 S # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Atlantic/Stanley -3:51:24 - LMT 1890

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