- tz - lists.iana.org

Re: [tz] tzdata 2016g
by Paul Eggert Sept. 28, 2016

Sept. 28, 2016

Susan Abraham wrote: > The DST Patches for Oracle Databases are released based on the tzdata. I got the > tzdata 2016g release from https://github.com/eggert/tz/releases. > > What are the changes included in 2016g? The changes are summarized in the NEWS file. https://github.com/eggert/tz/blob/2016g/NEWS

9 18

Link change for timezone and DST data for the Netherlands
by Gent, R.H. van (Rob) Sept. 27, 2016

Sept. 27, 2016

Hi, This has no urgency but at some point please replace the old link http://www.phys.uu.nl/~vgent/wettijd/wettijd.htm with http://www.staff.science.uu.nl/~gent0113/wettijd/wettijd.htm Thanks, Rob van Gent Utrecht University The Netherlands

2 1

tz-2016g.tar.gz and Oracle Java Timezone Updater Tool
by Dempsey, Peter Sept. 27, 2016

Sept. 27, 2016

Hi, I was wondering where I could a version of the 2016g.tar.gz file that works with the Oracle Java Timezone Updated Tool. I need to test this tool by using the file:// protocol. Best regards, Pete -- This electronic message may contain proprietary and confidential information of Verint Systems Inc., its affiliates and/or subsidiaries. The information is intended to be for the use of the individual(s) or entity(ies) named above. If you are not the intended recipient (or authorized to receive this e-mail for the intended recipient), you may not use, copy, disclose or distribute to anyone this message or any information contained in this message. If you have received this electronic message in error, please notify us by replying to this e-mail.

2 1

Istanbul fix for 1986-2006
by Kıvanç Yazan Sept. 25, 2016

Sept. 25, 2016

Hi! I've been looking at DST rules of Turkey, and I run into a few issues. 1) For 1986-2006, DST started at 01:00 local and ended at 02:00 local, with no exceptions. 2) 1994's lastSun was overridden with Mar 20, which was not reflected. Links in comments were inaccessible and some were not official. Here are official papers: http://www.resmigazete.gov.tr/arsiv/19032.pdf -- page 2 for 1986 http://www.resmigazete.gov.tr/arsiv/19400.pdf -- page 4 for 1987 http://www.resmigazete.gov.tr/arsiv/19752.pdf -- page 15 for 1988 http://www.resmigazete.gov.tr/arsiv/20102.pdf -- page 6 for 1989 http://www.resmigazete.gov.tr/arsiv/20464.pdf -- page 1 for 1990 - 1992 http://www.resmigazete.gov.tr/arsiv/21531.pdf -- page 15 for 1993 - 1995 http://www.resmigazete.gov.tr/arsiv/21879.pdf -- page 1 for overriding 1994 http://www.resmigazete.gov.tr/arsiv/22588.pdf -- page 1 for 1996, 1997 http://www.resmigazete.gov.tr/arsiv/23286.pdf -- page 10 for 1998 - 2000 http://www.resmigazete.gov.tr/eskiler/2001/03/20010324.htm#2 -- for 2001 http://www.resmigazete.gov.tr/eskiler/2002/03/20020316.htm#2 -- for 2002 - 2006 Sincerely, Kivanc Yazan

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[PROPOSED PATCH] Change Turkey timezone abbreviation to TRT
by Orhan Biyiklioglu Sept. 23, 2016

Sept. 23, 2016

New time zone abbreviation TRT has been proposed to denote the Turkey Time. See: https://www.timeanddate.com/time/zones/trt Can we use it instead of the +03 abbreviation in the 2016g release? --- europe | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/europe b/europe index 6020059..f05d5fa 100644 --- a/europe +++ b/europe @@ -3496,6 +3496,11 @@ Zone Europe/Zurich 0:34:08 - LMT 1853 Jul 16 # See above comment. # From Paul Eggert (2016-09-07): # The change is permanent, so this is the new standard time in Turkey. # It takes effect today, which is not much notice. +# +# From Orhan Biyiklioglu (2016-09-23): +# New timezone abbreviation TRT is proposed for Turkey time +# https://www.timeanddate.com/time/zones/trt + # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Turkey 1916 only - May 1 0:00 1:00 S @@ -3569,7 +3574,7 @@ Zone Europe/Istanbul 1:55:52 - LMT 1880 2:00 EU EE%sT 2015 Oct 25 1:00u 2:00 1:00 EEST 2015 Nov 8 1:00u 2:00 EU EE%sT 2016 Sep 7 - 3:00 - +03 + 3:00 - TRT Link Europe/Istanbul Asia/Istanbul # Istanbul is in both continents. # Ukraine -- 1.8.3.1

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Turkey Summer Time Regulation Update
by Ismail AKCAY Sept. 23, 2016

Sept. 23, 2016

Dear All, I am İsmail AKÇAY from Samsung Electronics Turkey company working as Mobile Phone Technical Product Manager. As you may know, Turkey regulation has been changed on 08 September 2016. With this new regulation, Summer Time setting will be used in Turkey for all the time. You can find official publication under below link. (Due to it is an official document, it is in Turkish language) http://www.resmigazete.gov.tr/main.aspx?home=http://www.resmigazete.gov.tr/e skiler/2016/09/20160908.htm <http://www.resmigazete.gov.tr/main.aspx?home=http://www.resmigazete.gov.tr/ eskiler/2016/09/20160908.htm&main=http://www.resmigazete.gov.tr/eskiler/2016 /09/20160908.htm> &main=http://www.resmigazete.gov.tr/eskiler/2016/09/20160908.htm (From above page, you should click to " <http://www.resmigazete.gov.tr/eskiler/2016/09/20160908-2.pdf> 2016/9154 Gün Işığından Daha Fazla Yararlanmak Amacıyla Bütün Yurtta Yaz Saati Uygulanması Hakkında Karar" link. In order to apply this change into our mobile phones, our R&D team is waiting IANA Organization's patch release. We are kindly asking your supports to get updated patch. Best Regards. cid:T9SZN3WZA6X7@namo.co.kr İsmail AKÇAY Mobile Phone Technical Product Manager / Manager Samsung Electronics Turkey Office +90 212 467 0573 Cell +90 533 310 1562 <mailto:ismail.akcay@samsung.com> ismail.akcay(a)samsung.com Bu e-posta (ve ekleri) sadece içeriğinde hitap edilen kişi veya kuruma yönlendirilmiştir; gizli ve/veya kişiye özel olduğu gibi, ticari sır içerebilir. E-posta içeriğinin ve/veya e-postada yer alan bilgilerin kullanılması, kopyalanması, tekrar iletilmesi, yayınlanması ve başka herhangi bir surette kullanımı kesinlikle yasaktır. Bu e-postayı yanlışlıkla aldıysanız, lütfen gönderici ile iletişime geçiniz ve e-posta ve içeriğini derhal siliniz. Aksi açıkça ifade edilmediği müddetçe, bu e-posta ve içeriği bağlayıcı bir teklif ve/veya sözleşme niteliğinde değildir. Bu e-postadaki görüşler yalnızca gönderen kişiye aittir ve Samsung'un görüşlerini yansıtmayabilir. This e-mail (and its attachments) are intended solely for the use of the individual or entity to whom they are addressed and confidential and/or privileged; it may contain trade secrets. Any use, duplication, retransmission, dissemination or other use of the scope of the e-mail and/or the information exist in the e-mail is strictly prohibited. If you have received this in error, please contact the sender and delete the e-mail & its contents. Unless it is specifically stated, this e-mail & its content do not constitute any binding offer or contract. The opinions expressed in this e-mail belong to sender alone and may not necessarily reflect the opinions of Samsung.

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[PROPOSED PATCH] * northamerica: Credit W.F. Allen's work on US time zones.
by Paul Eggert Sept. 21, 2016

Sept. 21, 2016

2016-09-11 Paul Eggert <eggert(a)cs.ucla.edu> Revert Cyprus change for now See: http://mm.icann.org/pipermail/tz/2016-September/024106.html --- northamerica | 26 ++++++++++++++++++++++++-- 1 file changed, 24 insertions(+), 2 deletions(-) diff --git a/northamerica b/northamerica index 0bafb00..6b0d905 100644 --- a/northamerica +++ b/northamerica @@ -24,8 +24,30 @@ # was the result of his proposals at the Convention of Railroad Trunk Lines # in New York City (1869-10). His 1870 proposal was based on Washington, DC, # but in 1872-05 he moved the proposed origin to Greenwich. -# His proposal was adopted by the railroads on 1883-11-18 at 12:00, -# and the most of the country soon followed suit. + +# From Paul Eggert (2016-09-20): +# Dowd's proposal left many details unresolved, such as where to draw +# lines between time zones. The key individual who made time zones +# work in the US was William Frederick Allen - railway engineer, +# managing editor of the Travelers' Guide, and secretary of the +# General Time Convention, a railway standardization group. Allen +# spent months in dialogs with with scientific and railway leaders, +# developed a workable plan to institute time zones, and presented it +# to the General Time Convention on 1883-04-11, saying that his plan +# meant "local time would be practically abolished" - a plus for +# railway scheduling. By the next convention on 1883-10-11 nearly all +# railroads had agreed and it took effect on 1883-11-18 at 12:00. +# Allen witnessed the transition in New York City, writing: +# +# I heard the bells of St. Paul's strike on the old time. Four +# minutes later, obedient to the electrical signal from the Naval +# Observatory ... the time-ball made its rapid descent, the chimes +# of old Trinity rang twelve measured strokes, and local time was +# abandoned, probably forever. +# +# Most of the US soon followed suit. See: +# Bartky IR. The adoption of standard time. Technol Cult 1989 Jan;30(1)25-56. +# http://dx.doi.org/10.2307/3105430 # From Paul Eggert (2005-04-16): # That 1883 transition occurred at 12:00 new time, not at 12:00 old time. -- 2.7.4

2 2

2016g tagged but not released
by Andreas Stieger Sept. 21, 2016

Sept. 21, 2016

Hello, I see that 2016g was tagged on github three days ago, but it was not put up on the IANA archive. https://github.com/eggert/tz/releases/tag/2016g Was there a problem with a script? Andreas -- Andreas Stieger <andreas.stieger(a)suse.com> Project Manager Security SUSE Linux GmbH, GF: Felix Imendörffer, Jane Smithard, Graham Norton, HRB 21284 (AG Nürnberg)

8 11

Backward compatibility of tzfile?
by Deborah Goldsmith Sept. 21, 2016

Sept. 21, 2016

Hi, Is the intent that successive versions of the tzfile format will be compatible with older implementations of localtime.c, date.c, etc.? Obviously they wouldn’t be able to take advantage of any new information, but is the idea they’ll still be able to read it? I wasn’t able to find anything in the man pages about this. Thanks, Debbie

3 2

Time zone change in Turkey
by Burak AYDIN Sept. 20, 2016

Sept. 20, 2016

Dear Paul, It is announced that Turkey will stay in Daylight Saving Time even in winter. Here is the related announcement from Turkish Government: http://www.resmigazete.gov.tr/eskiler/2016/09/20160908-2.pdf It says that we will not set the time 1 hour back at 30 October 2016. Best Regards, Burak AYDIN --- G?ZL?L?K NOTU: Bu e-posta mesaj? ki?iye ?zel olup, gizli bilgiler i?eriyor olabilir. E?er bu e-posta mesaj? size yanl??l?kla ula?m??sa, i?eri?ini hi? bir ?ekilde kullanmay?n?z ve ekli dosyalar? a?may?n?z. Bu durumda l?tfen e-posta mesaj?n? kullan?c?ya hemen geri g?nderiniz ve t?m kopyalar?n? mesaj kutunuzdan siliniz. Bu e-posta mesaj?, hi? bir ?ekilde, herhangi bir ama? i?in ?o?alt?lamaz, yay?nlanamaz ve para kar??l??? sat?lamaz. Bu e-posta mesaj?ndaki g?r??ler yaln?zca g?nderen ki?iye aittir ve Kentkart ?irketler Grubunun g?r??lerini yans?tmayabilir. Bu e-posta mesaj? vir?slere kars? anti-vir?s sistemleri taraf?ndan taranm??t?r. Ancak Kentkart ?irketler Grubu, bu e-posta mesaj?n?n -vir?s koruma sistemleri ile kontrol ediliyor olsa bile- vir?s i?ermedi?ini garanti etmez ve meydana gelebilecek zararlardan do?acak hi? bir sorumlulu?u kabul etmez. CONFIDENTIALITY NOTICE: This message is intended solely for the use of the individual or entity to whom it is addressed , and may contain confidential information. If you are not the intended recipient of this message or you receive this mail by mistake, you should refrain from making any use of the contents and from opening any attachment. In that case, please notify the sender immediately and return the message to the sender, then, delete and destroy all copies. This e-mail message, cannot be copied, published or sold for any reason. Any opinions presented in this email are solely those of the sender and may not necessarily reflect those of Kentkart Group of Companies. This e-mail message has been scanned by anti-virus systems for the presence of computer viruses. In doing so, however, Kentkart Group of Companies does not warrant that virus or other forms of data corruption and do not take any responsibility in any occurrence. ---

13 22

[PROPOSED PATCH 2/2] Use lz format for new tarball
by Antonio Diaz Diaz Sept. 20, 2016

Sept. 20, 2016

Paul Eggert wrote: >> please use a compression format that can be handled easily by >> Windows users as well. For instance, choose a format from the list >> that 7Zip can handle: http://www.7-zip.org/ > > Thanks for mentioning the problem. xz format is on 7-Zip's list; it's > a tiny bit larger than lzip format for our data (0.3% larger for the > draft tzdb tarball) but I suppose portability trumps this minor > advantage. Please, do not use xz for a new distribution format. The xz format is defective. See for example http://www.nongnu.org/lzip/xz_inadequate.html or the note in the third xz test at the bottom of http://www.nongnu.org/lzip/lzip_benchmark.html If a format that 7-Zip can handle is desired, I recommend bzip2 which produces a tzdb tarball a 25% smaller than gzip and only a 9% larger than lzip. Best regards, Antonio.

18 47

URL to get lz file
by tz.kovacsbv＠spamgourmet.com Sept. 20, 2016

Sept. 20, 2016

Hi, I'm trying to get the .lz file and the link in git ( https://github.com/eggert/tz/tree/2016g) is ftp://ftp.iana.org/tz/tzdb-latest.tar.lz But I browsed in there (ftp://ftp.iana.org/tz <ftp://ftp.iana.org/tz/tzdb-latest.tar.lz>) and there seems to be no .lz file. Vic Kovacs On Tue, Sep 20, 2016 at 11:57 AM, tz-request(a)iana.org < tz.kovacsbv.30ca297cb3.tz-request#iana.org(a)ob.0sg.net> wrote: > Send tz mailing list submissions to > tz(a)iana.org > > To subscribe or unsubscribe via the World Wide Web, visit > https://mm.icann.org/mailman/listinfo/tz > or, via email, send a message with subject or body 'help' to > tz-request(a)iana.org > > You can reach the person managing the list at > tz-owner(a)iana.org > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of tz digest..." > > > Today's Topics: > > 1. Re: [PROPOSED PATCH 2/2] Use lz format for new tarball > (Deborah Goldsmith) > 2. Re: [PROPOSED PATCH 2/2] Use lz format for new tarball > (Alexander Belopolsky) > 3. Re: [PROPOSED PATCH 2/2] Use lz format for new tarball > (Alexander Belopolsky) > 4. Re: [PROPOSED PATCH 2/2] Use lz format for new tarball > (Alexander Belopolsky) > 5. Re: [PROPOSED PATCH 2/2] Use lz format for new tarball (Random832) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Tue, 20 Sep 2016 08:24:51 -0700 > From: Deborah Goldsmith <goldsmit(a)apple.com> > To: Russ Allbery <eagle(a)eyrie.org> > Cc: Time zone mailing list <tz(a)iana.org> > Subject: Re: [tz] [PROPOSED PATCH 2/2] Use lz format for new tarball > Message-ID: <7DCA4197-C9B9-4F2E-9594-A31F33C5398C(a)apple.com> > Content-Type: text/plain; charset=us-ascii > > As far as I can tell, lzip is only used on Linux. There are no tools that > ship with macOS or Windows (out of the box) that can decode it. > > Adopting lzip as the primary format at this point seems like a statement > that only Linux matters. > > Debbie > > > On Sep 7, 2016, at 2:01 PM, Russ Allbery <eagle(a)eyrie.org> wrote: > > > > Deborah Goldsmith <goldsmit(a)apple.com> writes: > > > >> Maybe we should wait until lzip is widely available before adopting it? > > > >> Meanwhile, bzip2 is already widely adopted, and is smaller than gzip. > > > > My impression is that bzip2 is dying and offers no great advantages at > > this point. Those who are looking for the best compression are using > > either xz or lzip. Those who care primarily about backward compatibility > > are using gzip. bzip2 is falling between those two stools: it's much > > newer than gzip and not as widely-supported, and it's larger (and I think > > slower to decompress although I could be wrong) than either xz or lzip. > > > > I would not introduce bzip2 into anything that wasn't already using it at > > this point. > > > > I think the current plan is a good one: stick with gzip for the > supported, > > stable distribution, add an experimental distribution that can play > around > > with compression and contents, and worry later (possibly much later) > about > > when the stable distribution might be worth changing. At some point, > gzip > > will probably go the way of compress, but we're not there yet. (It will > > probably take longer than the replacement of compress with gzip took, > > since there aren't patent issues driving the matter the way that there > > were for compress.) > > > > -- > > Russ Allbery (eagle(a)eyrie.org) < > http://www.eyrie.org/~eagle/> > > > > ------------------------------ > > Message: 2 > Date: Tue, 20 Sep 2016 11:42:46 -0400 > From: Alexander Belopolsky <alexander.belopolsky(a)gmail.com> > To: Deborah Goldsmith <goldsmit(a)apple.com> > Cc: Time zone mailing list <tz(a)iana.org> > Subject: Re: [tz] [PROPOSED PATCH 2/2] Use lz format for new tarball > Message-ID: > <CAP7h-xYroWJ0JEb_2y4wuKceb9jnKPS7LHdN0sP07yjkbm > vd2A(a)mail.gmail.com> > Content-Type: text/plain; charset="utf-8" > > On Tue, Sep 20, 2016 at 11:24 AM, Deborah Goldsmith <goldsmit(a)apple.com> > wrote: > > > There are no tools that ship with macOS or Windows (out of the box) that > > can decode it. > > > > Neither of those systems come with a compiler out of the box either. On > MacOS, it takes less than 1.5 seconds to install lzip: > > $ time brew install lzip > ==> Downloading > https://homebrew.bintray.com/bottles/lzip-1.18.el_capitan.bottle.tar.gz > Already downloaded: > /Users/a/Library/Caches/Homebrew/lzip-1.18.el_capitan.bottle.tar.gz > ==> Pouring lzip-1.18.el_capitan.bottle.tar.gz > ? /usr/local/Cellar/lzip/1.18: 9 files, 166.4K > > real 0m1.124s > user 0m0.646s > sys 0m0.537s > > If you have trouble unpacking .tar.lz files - just point your browser to > > https://github.com/eggert/tz/tree/2016g > > and get whatever individual files you need. >

1 0

Turkish Governtment Decides to Stay on Daylight Saving Time
by Ozaydin Dolek Sept. 19, 2016

Sept. 19, 2016

Hi There, As you may have already heard by now , Turkish Governtment Decided to Stay on Daylight Saving Time (always summer time) When could be this change updated on IANA ? This is really urgent . Thx & BR Ozaydin Dolek Refs: http://www.timeanddate.com/news/time/turkey-scraps-dst-2016.html Official government doc: http://www.resmigazete.gov.tr/eskiler/2016/09/20160908-2.pdf -- Özaydın Dölek | Senior Principal Technical Account Manager Oracle EMEA Systems Support Phone: +90(212)3296825 | Fax: +90(212)3296701 ORACLE Turkey | UniqIstanbul Maslak-Ayazaga Caddesi No:4/B Kat:234485 Sarıyer / Istanbul

1 0

Time-zone file requirement for DST change in Turkey
by Deepak Gupta C Sept. 19, 2016

Sept. 19, 2016

Hi Team, There is a requirement from Government of Turkey to disable the DST in Turkey for 2016 i.e. the current time-zone EEST (GMT+3) should not be changed to EET(GMT+2) after 30th Oct 2016. We need the updated Time-Zone file for the same. Kindly support us to share the updated Time-Zone file. Please let us know in case of any more information required for the same. Regards Deepak Gupta Specialist - Customer Support RMEA T1C Mob: +919582111838

1 0

Uruguay considering DST again
by Carlos M. Martinez Sept. 13, 2016

Sept. 13, 2016

Link in Spanish: [http://www.elobservador.com.uy/evaluan-si-adelantan-la-hora-partir-octubre-…] Last year the Uruguayan Government decided at quite the last minute to *cancel* DST, causing the expected general havoc mostly on mobile phones. tks! -Carlos

1 0

[PROPOSED PATCH] Simplify strftime to pacify GCC 6.2
by Paul Eggert Sept. 12, 2016

Sept. 12, 2016

* strftime.c (strftime): Remove unnecessary checks against NULL that provoke diagnostics from 'gcc -Wnonnull-compare'. --- strftime.c | 7 ++----- 1 file changed, 2 insertions(+), 5 deletions(-) diff --git a/strftime.c b/strftime.c index f75f9fd..151b2e9 100644 --- a/strftime.c +++ b/strftime.c @@ -137,14 +137,11 @@ strftime(char *s, size_t maxsize, const char *format, const struct tm *t) tzset(); warn = IN_NONE; - p = _fmt(((format == NULL) ? "%c" : format), t, s, s + maxsize, &warn); + p = _fmt(format, t, s, s + maxsize, &warn); #ifndef NO_RUN_TIME_WARNINGS_ABOUT_YEAR_2000_PROBLEMS_THANK_YOU if (warn != IN_NONE && getenv(YEAR_2000_NAME) != NULL) { fprintf(stderr, "\n"); - if (format == NULL) - fprintf(stderr, "NULL strftime format "); - else fprintf(stderr, "strftime format \"%s\" ", - format); + fprintf(stderr, "strftime format \"%s\" ", format); fprintf(stderr, "yields only two digits of years in "); if (warn == IN_SOME) fprintf(stderr, "some locales"); -- 2.7.4

1 0

[PROPOSED PATCH] Update HTML documentation
by Paul Eggert Sept. 9, 2016

Sept. 9, 2016

* NEWS: Mention this. * tz-art.htm: Reorder sections to make the order more logical. Use list style for TV episodes and books. * tz-link.htm: Update description of local time on Mars to match current practice. Remove obsolete URLs and update URLs that moved. --- NEWS | 4 +- tz-art.htm | 388 ++++++++++++++++++++++++++++-------------------------------- tz-link.htm | 92 +++++--------- 3 files changed, 212 insertions(+), 272 deletions(-) diff --git a/NEWS b/NEWS index 64233bf..7d994c5 100644 --- a/NEWS +++ b/NEWS @@ -114,7 +114,9 @@ Unreleased, experimental changes tz-link.htm mentions JuliaTime (thanks to Curtis Vogt) and Time4J (thanks to Meno Hochschild) and ThreeTen-Extra, and its description of Java 8 has been brought up to date (thanks to - Stephen Colebourne). + Stephen Colebourne). Its description of local time on Mars has + been updated to match current practice, and URLs have been updated + and some obsolete ones removed. Release 2016f - 2016-07-05 16:26:51 +0200 diff --git a/tz-art.htm b/tz-art.htm index 08ef562..0a2b427 100644 --- a/tz-art.htm +++ b/tz-art.htm @@ -24,6 +24,184 @@ into problems that programmers have with timekeeping.</li> Bell Science extravaganza, with Frank Baxter, Richard Deacon, and Les Tremayne. (<a href="http://www.imdb.com/title/tt0154110/">IMDb entry</a>.)</li> </ul> +<h2>Movies</h2> +<ul> +<li> +In the 1946 movie <em>A Matter of Life and Death</em> +(U.S. title <em>Stairway to Heaven</em>) +there is a reference to British Double Summer Time. +The time does not play a large part in the plot; +it's just a passing reference to the time when one of the +characters was supposed to have died (but didn't). +The IMDb page is at +<a href="http://us.imdb.com/title/tt0038733/"> +http://us.imdb.com/title/tt0038733/ +</a>. (Dave Cantor) +<li> +The 1953 railway comedy movie <em>The Titfield Thunderbolt</em> includes a +play on words on British Double Summer Time. Valentine's wife wants +him to leave the pub and asks him, "Do you know what time it is?" +And he, happy where he is, replies: "Yes, my love. Summer double time." +IMDb page: +<a href="http://us.imdb.com/title/tt0046436/"> +http://us.imdb.com/title/tt0046436/ +</a>. (Mark Brader, 2009-10-02) +</li> +<li> +The premise of the 1999 caper movie <em>Entrapment</em> involves computers +in an international banking network being shut down briefly at +midnight in each time zone to avoid any problems at the transition +from the year 1999 to 2000 in that zone. (Hmmmm.) If this shutdown +is extended by 10 seconds, it will create a one-time opportunity for +a gigantic computerized theft. To achieve this, at one location the +crooks interfere with the microwave system supplying time signals to +the computer, advancing the time by 0.1 second each minute over the +last hour of 1999. (So this movie teaches us that 0.1 × 60 = 10.) +IMDb page: +<a href="http://us.imdb.com/title/tt0137494/"> +http://us.imdb.com/title/tt0137494/ +</a>. (Mark Brader, 2009-10-02) +</li> +<li> +One mustn't forget the +<a href="https://www.youtube.com/watch?v=k4EUTMPuvHo">trailer</a> +(2014; 2:23) for the movie <em>Daylight Saving</em>. +</li> +</ul> +<h2>TV episodes</h2> +<ul> +<li> +An episode of <em>The Adventures of Superman</em> entitled "The Mysterious +Cube," first aired 1958-02-24, had Superman convincing the controllers +of the Arlington Time Signal to broadcast ahead of actual time; +doing so got a crook trying to be declared dead to +emerge a bit too early from the titular enclosure. +</li> +<li> +The 1960s ITC television series <em>The Prisoner</em> included an episode +entitled "The Chimes of Big Ben" in which our protagonist tumbled to +the fraudulent nature of a Poland-to-England escape upon hearing "Big +Ben" chiming on Polish local time. +</li> +<li> +The series <em>Seinfeld</em> included an episode entitled "The Susie," first +broadcast 1997-02-13, in which Kramer decides that daylight saving time +isn't coming fast enough, so he sets his watch ahead an hour. +</li> +<li> +The "20 Hours in America" episode of <em>The West Wing</em>, +first aired 2002-09-25, contained a <a +href="https://www.youtube.com/watch?v=-J1NHzQ1sgc">scene</a> that +saw White House staffers stranded in Indiana; they thought they had time to +catch Air Force One but were done in by intra-Indiana local time changes. +</li> +<li> +"In what time zone would you find New York City?" was a $200 question on +the 1999-11-13 United States airing of <em>Who Wants to Be a Millionaire?</em>, +and "In 1883, what industry led the movement to divide the U.S. into four time +zones?" was a $32,000 question on the 2001-05-23 United States airing of +the same show. At this rate, the million-dollar time-zone +question should have been asked 2002-06-04. +</li> +<li> +A private jet's mid-flight change of time zones distorts Alison Dubois' +premonition in the "We Had a Dream" episode of <em>Medium</em> +(originally aired 2007-02-28). +</li> +<li> +In the <em>30 Rock</em> episode "Anna Howard Shaw Day" +(first broadcast 2010-02-11), +Jack Donaghy's date realizes that a Geneva-to-New-York business phone call +received in the evening must be fake given the difference in local times. +</li> +<li> +In the "Run by the Monkeys" episode of <em>Da Vinci's Inquest</em> +(first broadcast 2002-11-17), +a witness in a five-year-old fire case realizes they may not have set +their clock back when daylight saving ended on the day of the fire, +introducing the possibility of an hour when arson might have occurred. +</li> +<li> +In "The Todd Couple" episode of <em>Outsourced</em> (first aired 2011-02-10), +Manmeet sets up Valentine's Day teledates for 6:00 and 9:00pm; +since one is with a New Yorker and the other with a San Franciscan, +hilarity ensues. +(Never mind that this should be 7:30am in Mumbai, yet for some reason the show +proceeds as though it's also mid-evening there.) +</li> +<li> +In the "14 Days to Go"/"T Minus..." episode of +<em>You, Me and the Apocalypse</em> +(first aired 2015-11-11 in the UK, 2016-03-10 in the US), +the success of a mission to deal with a comet +hinges on whether or not Russia observes daylight saving time. +(In the US, the episode first aired in the week before the switch to DST.) +</li> +<li> +"The Lost Hour", <em>Eerie, Indiana</em>, episode 10, NBC, 1991-12-01. +Despite Indiana's then-lack of DST, Marshall changes his clock with +unusual consequences. +</li> +<li> +"Time Tunnel", <em>The Adventures of Pete & Pete</em>, season 2, episode 5, +Nickelodeon, 1994-10-23. +The two Petes travel back in time an hour on the day that DST ends. +</li> +<li> +"King-Size Homer", <em>The Simpsons</em>, episode 135, Fox, 1995-11-05. +Homer, working from home, remarks "8:58, first +time I've ever been early for work. Except for all those daylight +savings days. Lousy farmers." +</li> +<li> +"Tracks", <em>The Good Wife</em>, season 7, episode 12, +CBS, 2016-01-17. +The applicability of a contract hinges on the +time zone associated with a video time stamp. +</li> +</ul> +<h2>Books, plays, and magazines</h2> +<ul> +<li> +Jules Verne, <em>Around the World in Eighty Days</em> +(<em>Le tour du monde en quatre-vingts jours</em>). +Wall-clock time plays a central role in the plot. +European readers of the 1870s clearly held the U.S. press in +deep contempt; the protagonists cross the U.S. without once +reading a paper. +Available versions include +<a href="http://www.literature.org/Works/Jules-Verne/eighty">an English +translation</a>, and +<a href="http://fourmilab.ch/etexts/www/tdm80j">the original French</a> +"with illustrations from the original 1873 French-language edition". +</li> +<li> +Nick Enright, <em>Daylight Saving</em>, 1989. +A fast-paced comedy about love and loneliness as the clocks turn back. +</li> +<li> +Umberto Eco, <em>The Island of the Day Before</em> +(<em>L'isola del giorno prima</em>), 1994. +"...the story of a 17th century Italian nobleman trapped near an island +on the International Date Line. Time and time zones play an integral +part in the novel." (Paul Eggert, 2006-04-22) +</li> +<li> +John Dunning, <a +href="http://books.simonandschuster.com/Two-OClock-Eastern-Wartime/John-Dunning/9…"><em>Two +O'Clock, Eastern Wartime</em></a>, 2001. +Mystery, history, daylight saving time, and old-time radio. +</li> +<li> +Surrealist artist Guy Billout's work "Date Line" appeared on page 103 +of the 1999-11 <em>Atlantic Monthly</em>. +</li> +<li> +"Gloom, Gloom, Go Away" by Walter Kirn appeared on page 106 of <em>Time</em> +magazine's 2002-11-11 issue; among other things, it proposed +year-round DST as a way of lessening wintertime despair. +</li> +</ul> <h2>Music</h2> <p> Data on recordings of "Save That Time," Russ Long, Serrob Publishing, BMI:</p> @@ -254,216 +432,6 @@ Supernaw.</td></tr> <tr><td>Notes</td><td>Includes the piece "What Time Is It" ("He knew what time it was everywhere...that counted").</td></tr> </table> - -<h2>TV episodes</h2> - -<ul> -<li> -An episode of <em>The Adventures of Superman</em> entitled "The Mysterious -Cube," first aired 1958-02-24, had Superman convincing the controllers -of the Arlington Time Signal to broadcast ahead of actual time; -doing so got a crook trying to be declared dead to -emerge a bit too early from the titular enclosure. -</li> -<li> -The 1960s ITC television series <em>The Prisoner</em> included an episode -entitled "The Chimes of Big Ben" in which our protagonist tumbled to -the fraudulent nature of a Poland-to-England escape upon hearing "Big -Ben" chiming on Polish local time. -</li> -<li> -The series <em>Seinfeld</em> included an episode entitled "The Susie," first -broadcast 1997-02-13, in which Kramer decides that daylight saving time -isn't coming fast enough, so he sets his watch ahead an hour. -</li> -<li> -The "20 Hours in America" episode of <em>The West Wing</em>, -first aired 2002-09-25, contained a <a -href="https://www.youtube.com/watch?v=-J1NHzQ1sgc">scene</a> that -saw White House staffers stranded in Indiana; they thought they had time to -catch Air Force One but were done in by intra-Indiana local time changes. -</li> -<li> -"In what time zone would you find New York City?" was a $200 question on -the 1999-11-13 United States airing of <em>Who Wants to Be a Millionaire?</em>, -and "In 1883, what industry led the movement to divide the U.S. into four time -zones?" was a $32,000 question on the 2001-05-23 United States airing of -the same show. At this rate, the million-dollar time-zone -question should have been asked 2002-06-04. -</li> -<li> -A private jet's mid-flight change of time zones distorts Alison Dubois' -premonition in the "We Had a Dream" episode of <em>Medium</em> -(originally aired 2007-02-28). -</li> -<li> -In the <em>30 Rock</em> episode "Anna Howard Shaw Day" -(first broadcast 2010-02-11), -Jack Donaghy's date realizes that a Geneva-to-New-York business phone call -received in the evening must be fake given the difference in local times. -</li> -<li> -In the "Run by the Monkeys" episode of <em>Da Vinci's Inquest</em> -(first broadcast 2002-11-17), -a witness in a five-year-old fire case realizes they may not have set -their clock back when daylight saving ended on the day of the fire, -introducing the possibility of an hour when arson might have occurred. -</li> -<li> -In "The Todd Couple" episode of <em>Outsourced</em> (first aired 2011-02-10), -Manmeet sets up Valentine's Day teledates for 6:00 and 9:00pm; -since one is with a New Yorker and the other with a San Franciscan, -hilarity ensues. -(Never mind that this should be 7:30am in Mumbai, yet for some reason the show -proceeds as though it's also mid-evening there.) -</li> -<li> -In the "14 Days to Go"/"T Minus..." episode of -<em>You, Me and the Apocalypse</em> -(first aired 2015-11-11 in the UK, 2016-03-10 in the US), -the success of a mission to deal with a comet -hinges on whether or not Russia observes daylight saving time. -(In the US, the episode first aired in the week before the switch to DST.) -</li> -</ul> - -<table> -<tr><td>TV episode title</td><td>The Lost Hour</td> -<tr><td>TV series</td><td><em>Eerie, Indiana</em></td> -<tr><td>TV episode number</td><td>10</td> -<tr><td>Network</td><td>NBC</td> -<tr><td>Air date</td><td>1991-12-01</td> -<tr><td>Notes</td><td>Despite Indiana's then-lack of DST, Marshall changes his clock with unusual consequences.</td></tr> -<tr><td> </td></tr> - -<tr><td>TV episode title</td><td>Time Tunnel</td> -<tr><td>TV series</td><td><em>The Adventures of Pete & Pete</em></td> -<tr><td>TV episode number</td><td>5, season 2</td> -<tr><td>Network</td><td>Nickelodeon</td> -<tr><td>Air date</td><td>1994-10-23</td> -<tr><td>Notes</td><td>The two Petes travel back in time an hour on the day that DST ends.</td></tr> -<tr><td> </td></tr> - -<tr><td>TV episode title</td><td>King-Size Homer</td> -<tr><td>TV series</td><td><em>The Simpsons</em></td> -<tr><td>TV episode number</td><td>135</td> -<tr><td>Network</td><td>Fox</td> -<tr><td>Air date</td><td>1995-11-05</td> -<tr><td>Notes</td><td>Homer, working from home, remarks "8:58, first -time I've ever been early for work. Except for all those daylight -savings days. Lousy farmers."</td></tr> -<tr><td> </td></tr> - -<tr><td>TV episode title</td><td>Tracks</td></tr> -<tr><td>TV series</td><td><em>The Good Wife</em></td></tr> -<tr><td>TV episode number</td><td>12, season 7</td></tr> -<tr><td>Network</td><td>CBS</td></tr> -<tr><td>Air date</td><td>2016-01-17</td></tr> -<tr><td>Notes</td><td>The applicability of a contract hinges on the -time zone associated with a video time stamp.</td></tr> -</table> - -<h2>Books, plays, and magazines</h2> - -<table> -<tr><td>Artist</td><td>Jules Verne</td></tr> -<tr><td>Book</td><td><em>Around the World in Eighty Days</em> -(<em>Le tour du monde en quatre-vingts jours</em>)</td></tr> -<tr><td>Notes</td><td>Wall-clock time plays a central role in the plot. -European readers of the 1870s clearly held the U.S. press in -deep contempt; the protagonists cross the U.S. without once -reading a paper. -An on-line French-language version of the book -"with illustrations from the original 1873 French-language edition" -is available at -<a href="http://fourmilab.ch/etexts/www/tdm80j">http://fourmilab.ch/etexts/www/tdm80j</a> -An on-line English-language translation of the book is available at -<a href="http://www.literature.org/Works/Jules-Verne/eighty">http://www.literature.org/Works/Jules-Verne/eighty</a></td></tr> - -<tr><td> </td></tr> -<tr><td>Artist</td><td>Nick Enright</td></tr> -<tr><td>Play</td><td><em>Daylight Saving</em></td></tr> -<tr><td>Copyright Date</td><td>1989</td></tr> -<tr><td>Notes</td><td> -A fast-paced comedy about love and loneliness as the clocks turn back. -</td></tr> - -<tr><td> </td></tr> -<tr><td>Artist</td><td>Umberto Eco</td></tr> -<tr><td>Book</td><td><em>The Island of the Day Before</em> -(<em>L'isola del giorno prima</em>)</td></tr> -<tr><td>Copyright Date</td><td>1994</td></tr> -<tr><td>Notes</td><td> -"...the story of a 17th century Italian nobleman trapped near an island -on the International Date Line. Time and time zones play an integral -part in the novel." (Paul Eggert, 2006-04-22) -</td></tr> -<tr><td> </td></tr> -<tr><td>Artist</td><td>John Dunning</td></tr> -<tr><td>Book</td><td><a -href="http://books.simonandschuster.com/Two-OClock-Eastern-Wartime/John-Dunning/9…"><em>Two -O'Clock, Eastern Wartime</em></a></td></tr> -<tr><td>Copyright Date</td><td>2001</td></tr> -<tr><td>Notes</td><td> -Mystery, history, daylight saving time, and old-time radio. -</td></tr> -</table> -<hr> -<ul> -<li> -Surrealist artist Guy Billout's work "Date Line" appeared on page 103 -of the 1999-11 <em>Atlantic Monthly</em>. -</li> -<li> -"Gloom, Gloom, Go Away" by Walter Kirn appeared on page 106 of <em>Time</em> -magazine's 2002-11-11 issue; among other things, it proposed -year-round DST as a way of lessening wintertime despair. -</li> -</ul> -<h2>Movies</h2> -<ul> -<li> -In the 1946 movie <em>A Matter of Life and Death</em> -(U.S. title <em>Stairway to Heaven</em>) -there is a reference to British Double Summer Time. -The time does not play a large part in the plot; -it's just a passing reference to the time when one of the -characters was supposed to have died (but didn't). -The IMDb page is at -<a href="http://us.imdb.com/title/tt0038733/"> -http://us.imdb.com/title/tt0038733/ -</a>. (Dave Cantor) -<li> -The 1953 railway comedy movie <em>The Titfield Thunderbolt</em> includes a -play on words on British Double Summer Time. Valentine's wife wants -him to leave the pub and asks him, "Do you know what time it is?" -And he, happy where he is, replies: "Yes, my love. Summer double time." -IMDb page: -<a href="http://us.imdb.com/title/tt0046436/"> -http://us.imdb.com/title/tt0046436/ -</a>. (Mark Brader, 2009-10-02) -</li> -<li> -The premise of the 1999 caper movie <em>Entrapment</em> involves computers -in an international banking network being shut down briefly at -midnight in each time zone to avoid any problems at the transition -from the year 1999 to 2000 in that zone. (Hmmmm.) If this shutdown -is extended by 10 seconds, it will create a one-time opportunity for -a gigantic computerized theft. To achieve this, at one location the -crooks interfere with the microwave system supplying time signals to -the computer, advancing the time by 0.1 second each minute over the -last hour of 1999. (So this movie teaches us that 0.1 × 60 = 10.) -IMDb page: -<a href="http://us.imdb.com/title/tt0137494/"> -http://us.imdb.com/title/tt0137494/ -</a>. (Mark Brader, 2009-10-02) -</li> -<li> -One mustn't forget the -<a href="https://www.youtube.com/watch?v=k4EUTMPuvHo">trailer</a> -(2014; 2:23) for the movie <em>Daylight Saving</em>. -</li> -</ul> <h2>Comics</h2> <ul> <li> diff --git a/tz-link.htm b/tz-link.htm index 52bb492..8964490 100644 --- a/tz-link.htm +++ b/tz-link.htm @@ -10,7 +10,7 @@ content="Sources for time zone and daylight saving time data"> <meta name="DC.Creator" content="Eggert, Paul"> <meta name="DC.Contributor" content="Olson, Arthur David"> -<meta name="DC.Date" content="2016-09-05"> +<meta name="DC.Date" content="2016-09-09"> <meta name="DC.Description" content="Sources of information about time zones and daylight saving time"> <meta name="DC.Identifier" @@ -65,13 +65,13 @@ title="Advanced Interactive eXecutive">AIX</abbr></a>, <a href="https://en.wikipedia.org/wiki/BlackBerry_10">BlackBerry 10</a>, <a href="http://www.apple.com/ios/"><abbr title="iPhone OS">iOS</abbr></a>, -<a href="http://windows.microsoft.com">Microsoft Windows</a>, +<a href="http://www.apple.com/macos/"><abbr +title="Mac Operating System">macOS</abbr></a>, +<a href="https://www.microsoft.com/en-us/windows">Microsoft Windows</a>, <a href="http://www.hp.com/go/openvms/">Open<abbr title="Virtual Memory System">VMS</abbr></a>, -<a href="https://www.oracle.com/database/index.html">Oracle Database</a>, -<a href="http://oracle.com/solaris">Oracle Solaris</a>, and -<a href="http://www.apple.com/osx/"><abbr title="Operating System Ten">OS -X</abbr></a>.</p> +<a href="https://www.oracle.com/database/index.html">Oracle Database</a>, and +<a href="https://www.oracle.com/solaris">Oracle Solaris</a>.</p> <p> Each location in the database represents a region where all clocks keeping local time have agreed since 1970. @@ -103,7 +103,7 @@ for time stamps after 1960 this is more precisely <a href="https://en.wikipedia.org/wiki/Coordinated_Universal_Time">Coordinated Universal Time</a> (<abbr>UTC</abbr>). The database also records when daylight saving time was in use, -along with alphabetic time zone abbreviations such as <abbr>EST</abbr> +along with some time zone abbreviations such as <abbr>EST</abbr> for Eastern Standard Time in the <abbr>US</abbr>.</p> <p> The following <a @@ -142,7 +142,7 @@ of the <a href="http://www.iana.org">Internet Assigned Numbers Authority (IANA)</a>. An <a href="https://github.com/eggert/tz">unofficial development repository</a> of the code and data is available -in <a href="http://git-scm.com">Git</a> form +in <a href="https://git-scm.com">Git</a> form from <a href="https://github.com">GitHub</a>; be careful, as this repository is less well tested and probably contains more errors. <p> @@ -208,7 +208,7 @@ the Timing of Time Zone Changes</a> gives examples of problems caused by inadequate notice by governments of time zone and daylight saving rule changes.</li> <li><a -href="http://blog.jonudell.net/2009/10/23/a-literary-appreciation-of-the-olsonzon…">A +href="https://blog.jonudell.net/2009/10/23/a-literary-appreciation-of-the-olsonzo…">A literary appreciation of the Olson/Zoneinfo/tz database</a> comments on the database's style.</li> </ul> @@ -244,15 +244,14 @@ names and shows location maps.</li> </ul> <h2>Network protocols for <code><abbr>tz</abbr></code> data</h2> <ul> -<li>The <a href="http://www.ietf.org">Internet Engineering Task Force</a>'s +<li>The <a href="https://www.ietf.org">Internet Engineering Task Force</a>'s <a href="https://datatracker.ietf.org/wg/tzdist/charter/">Time Zone Data Distribution Service (tzdist) working group</a> defined <a href="https://tools.ietf.org/html/rfc7808">TZDIST</a> (Internet <abbr>RFC</abbr> 7808), a time zone data distribution service, along with a <a href="https://tools.ietf.org/html/rfc7809">calendar access protocol for transferring time zone data by reference</a> -(Internet <abbr>RFC</abbr> 7809). This work was based -on the iCalendar and CalConnect efforts described below.</li> +(Internet <abbr>RFC</abbr> 7809).</li> <li>The <a href="https://tools.ietf.org/html/rfc5545"> Internet Calendaring and Scheduling Core Object Specification (iCalendar)</a> (Internet <abbr>RFC</abbr> 5445) @@ -261,35 +260,12 @@ data; see its VTIMEZONE calendar component. The iCalendar format requires specialized parsers and generators; a variant <a href="https://tools.ietf.org/html/rfc6321">xCal</a> (Internet <abbr>RFC</abbr> 6321) uses -<a href="http://www.w3.org/XML/"><abbr +<a href="https://www.w3.org/XML/"><abbr title="Extensible Markup Language">XML</abbr></a> format, and a variant <a href="https://tools.ietf.org/html/rfc7265">jCal</a> (Internet <abbr>RFC</abbr> 7265) uses <a href="http://www.json.org"><abbr -title="JavaScript Object Notation">JSON</abbr></a> format. -<a href="https://www.calconnect.org">CalConnect, The Calendaring and Scheduling -Consortium</a> is promoting further work in this area. <a -href="http://calconnect.org/publications/icalendartimezoneproblemsandrecommendati…">iCalendar -TIMEZONE Problems and Recommendations</a> offers guidelines and -recommendations for the use of VTIMEZONE and <code><abbr>tz</abbr></code>.</li> -<li>The <a -href="http://calconnect.org/publications/timezoneregistryandservicerecommendation…">Timezone -Registry and Service Recommendations</a> of CalConnect's -<a href="https://www.calconnect.org/about/technical-committees/tc-timezone">TIMEZONE -Technical Committee</a> discusses a -strategy for defining and deploying a time zone -registration process that would establish unique names for each -version of each <code><abbr>tz</abbr></code> zone, along with a polygonal -representation of the geographical area corresponding to the -zone.</li> -<li>The <a -href="http://lists.w3.org/Archives/Public/www-rdf-calendar/">www-rdf-calendar</a> -list discusses <a -href="http://www.w3.org/RDF/"><abbr -title="Resource Description Framework">RDF</abbr></a>-based calendar -and group scheduling systems, and has a <a -href="http://www.w3.org/2002/12/cal/#tzd">workspace on time zone -data</a> converted from <code><abbr>tz</abbr></code>.</li> +title="JavaScript Object Notation">JSON</abbr></a> format.</li> </ul> <h2>Other <code><abbr>tz</abbr></code> compilers</h2> <ul> @@ -423,7 +399,8 @@ has an independent, thread-safe implementation of a <code><abbr>tz</abbr></code> binary file reader. This library is freely available under the LGPL and is widely used in <abbr>GNU</abbr>/Linux systems.</li> -<li><a href="https://www.gnome.org">GNOME</a>'s Glib has +<li><a href="https://www.gnome.org">GNOME</a>'s +<a href="https://developer.gnome.org/glib/">GLib</a> has a <code><abbr>tz</abbr></code> binary file reader written in C that creates a <code>GTimeZone</code> object representing sets of <abbr>UT</abbr> offsets. @@ -542,7 +519,8 @@ is another time zone database.</li> <li><a href="http://tycho.usno.navy.mil/tzones.html">World Time Zones</a> contains data from the Time Service Department of the <abbr>US</abbr> Naval Observatory.</li> -<li>The <a href="http://www.iata.org/publications/Pages/ssim.aspx">Standard +<li>The <a +href="http://www.iata.org/publications/store/Pages/standard-schedules-information…">Standard Schedules Information Manual</a> of the International Air Transport Association gives current time zone rules for airports served by commercial aviation.</li> @@ -613,7 +591,7 @@ common.</li> </ul> <h2>Civil time concepts and history</h2> <ul> -<li><a href="http://www.nist.gov/pml/general/time/index.cfm">A +<li><a href="http://physics.nist.gov/time">A Walk through Time</a> surveys the evolution of timekeeping.</li> <li><a href="http://www.webexhibits.org/daylightsaving/">About Daylight @@ -622,8 +600,6 @@ is an overall history of <abbr>DST</abbr>.</li> <li><a href="https://www.w3.org/TR/timezone/">Working with Time Zones</a> contains guidelines and best practices for software applications that deal with civil time.</li> -<li><a href="http://energy.ca.gov/daylightsaving.html">Saving Time, -Saving Energy</a> discusses a primary justification for <abbr>DST</abbr>.</li> <li><a href="http://seizethedaylight.com/dst/">A Brief History of Daylight Saving Time</a> summarizes some of the contentious history of <abbr>DST</abbr>.</li> @@ -681,7 +657,7 @@ hreflang="nl">Legal time in the Netherlands (in Dutch)</a> covers the history of local time in the Netherlands from ancient times.</dd> <dt>New Zealand</dt> <dd>The Department of Internal Affairs maintains a brief <a -href="http://www.dia.govt.nz/Daylight-Saving-History">History of +href="https://www.dia.govt.nz/Daylight-Saving-History">History of Daylight Saving</a>. The privately-maintained <a href="http://astrologyschool.com/nztime.html">History of New Zealand time</a> has more details.</dd> @@ -714,7 +690,8 @@ title="Network Time Protocol">NTP</abbr>: The Network Time Protocol</a> discusses how to synchronize clocks of Internet hosts.</li> -<li>The <a href="http://www.nist.gov/el/isd/ieee/ieee1588.cfm">Precision +<li>The <a +href="https://www.nist.gov/intelligent-systems-division/ieee-1588">Precision Time Protocol</a> (<abbr title="Institute of Electrical and Electronics Engineers">IEEE</abbr> 1588) can achieve submicrosecond clock accuracy on a local area network.</li> @@ -726,11 +703,6 @@ specifies a <a href="https://en.wikipedia.org/wiki/Dynamic_Host_Configuration_Protocol"><abbr>DHCP</abbr></a> option for a server to configure a client's time zone and daylight saving settings automatically.</li> -<li><a href="http://gauss.gge.unb.ca/GMT.UT.and.the.RGO.html">A Few Facts -Concerning <abbr>GMT</abbr>, <abbr>UT</abbr>, and -the <abbr title="Royal Greenwich Observatory">RGO</abbr></a> -answers questions like "What is the -difference between <abbr>GMT</abbr> and <abbr>UTC</abbr>?"</li> <li><a href="http://www.cv.nrao.edu/~rfisher/Ephemerides/times.html">Astronomical Times</a> explains more abstruse astronomical time scales like @@ -739,7 +711,7 @@ Times</a> explains more abstruse astronomical time scales like <abbr title="Barycentric Dynamic Time">TDB</abbr>. <a href="http://www.ucolick.org/~sla/leapsecs/timescales.html">Time Scales</a> goes into more detail, particularly for historical variants.</li> -<li>The <a href="http://iau.org"><abbr +<li>The <a href="http://www.iau.org"><abbr title="International Astronomical Union">IAU</abbr></a>'s <a href="http://www.iausofa.org"><abbr title="Standards Of Fundamental Astronomy">SOFA</abbr></a> @@ -753,10 +725,8 @@ code for converting among time scales like Space Flight – Reference Systems – Time Conventions</a> briefly explains interplanetary space flight timekeeping.</li> <li><a -href="http://www.giss.nasa.gov/tools/mars24/help/notes.html">Technical -Notes on Mars Solar Time as Adopted by the Mars24 Sunclock</a> briefly -describes Mars Coordinated Time (<abbr -title="Mars Coordinated Time">MTC</abbr>) and the +href="http://www.giss.nasa.gov/tools/mars24/help/notes.html">Mars24 Sunclock +– Time on Mars</a> describes Airy Mean Time (<abbr>AMT</abbr>) and the diverse local time scales used by each landed mission on Mars.</li> <li><a href="http://leapsecond.com">LeapSecond.com</a> is @@ -772,7 +742,7 @@ when leap seconds occur.</li> <li>The <a href="https://pairlist6.pair.net/mailman/listinfo/leapsecs">Leap Second Discussion List</a> covers <a -href="http://gauss.gge.unb.ca/papers.pdf/gpsworld.november99.pdf">McCarthy +href="http://www2.unb.ca/gge/Resources/gpsworld.november99.pdf">McCarthy and Klepczynski's proposal to discontinue leap seconds</a>, discussed further in <a href="http://www.cl.cam.ac.uk/~mgk25/time/metrologia-leapsecond.pdf">The @@ -790,7 +760,7 @@ zone names, abbreviations, identifiers, and formats. For example, it contains French translations for "Eastern European Summer Time", "<abbr title="Eastern European Summer Time">EEST</abbr>", and "Bucharest". Its -<a href="http://unicode.org/cldr/charts/by_type/index.html">by-type +<a href="http://www.unicode.org/cldr/charts/latest/by_type/">by-type charts</a> show these values for many locales. Data values are available in both <abbr title="Locale Data Markup Language">LDML</abbr> (an <abbr>XML</abbr> format) and <abbr>JSON</abbr>. @@ -834,10 +804,10 @@ practice. For example, in English-speaking North America but in China it denotes 8 hours ahead of <abbr>UTC</abbr>, and French-speaking North Americans prefer "<abbr title="Heure Normale du Centre">HNC</abbr>" to -"<abbr>CST</abbr>". For <abbr>POSIX</abbr> the <code><abbr>tz</abbr></code> -database contains English abbreviations for all time stamps but in -many cases these are merely inventions of the database -maintainers.</li> +"<abbr>CST</abbr>". The <code><abbr>tz</abbr></code> +database contains English abbreviations for many time stamps; +unfortunately some of these abbreviations were merely the database maintainers' +inventions, and are gradually being removed.</li> <li>Numeric time zone abbreviations typically count hours east of <abbr>UTC</abbr>, e.g., +09 for Japan and −10 for Hawaii. However, the <abbr>POSIX</abbr> @@ -852,7 +822,7 @@ settings like <code><abbr>TZ</abbr>="Asia/Tokyo"</code> and confusion, handle old time stamps better, and insulate you better from any future changes to the rules. One should never set <abbr>POSIX</abbr> <code><abbr>TZ</abbr></code> to a value like -<code>"GMT-9"</code>, though, since this would falsely claim that +<code>"GMT-9"</code>, though, since this would incorrectly imply that local time is nine hours ahead of <abbr>UTC</abbr> and the time zone is called "<abbr>GMT</abbr>".</li> </ul> -- 2.7.4

1 0

About decision of Turkey to end DST ...
by askin senel Sept. 9, 2016

Sept. 9, 2016

Hello, When do you plan to update the tz database with recent Turkish decision to end DST. See https://www.timeanddate.com/news/time/turkey-scraps-dst-2016.html Kind Regards. Askin

2 1

tzdist and tz@iana
by Alexander Belopolsky Sept. 8, 2016

Sept. 8, 2016

On Wed, Sep 7, 2016 at 4:04 AM, Jon Skeet <skeet(a)pobox.com> wrote: > (Then there's tzdist of course, but that's a whole other matter...) I have been looking at RFC 7808 (aka tzdist) and I wonder what is the relationship between the proposed distribution standard and this project. While RFC 7808 mentions "Olson" as a possible "primary-source", it does not look like the proposed JSON format is capable of carrying all information provided by Olson raw files. The distribution format looks like a text variant of the binary zoneinfo files, but it is not clear whether or not the distributed data includes timezone abbreviations. Are there any plans to support the tzdist format in tzcode? Will IANA run its own "Time Zone Data Server"?

7 18

Rangoon to Yangon
by David Massoud Sept. 8, 2016

Sept. 8, 2016

Myanmar's former capital and most populous city is currently known as Yangon. In 1989 Burma was renamed Myanmar (which you have reflected in the Asia data file). At the same time, Rangoon was renamed Yangon, which is currently not reflected in the codebase. http://www.forbestravelguide.com/yangon-myanmar/whats-the-difference-betwee… . -- David Massoud http://lnked.in/DavidMassoud

2 1

Turkey to keep permanent DST
by Even Scharning Sept. 8, 2016

Sept. 8, 2016

Turkey will stay on DST, canceling October's transition back to UTC +2 standard time, according to Hürriyet, Turkey's "leading news source". http://www.hurriyet.com.tr/kis-saati-uygulamasi-yururlukten-kaldirildi-4021… Time in Turkey: http://time.is/Turkey Even Scharning Time.is - exact time for any time zone http://time.is/

3 4

Google search results displaying wrong time for Egypt
by Andrew Paprocki Sept. 7, 2016

Sept. 7, 2016

If you search for "current time in Egypt" (at least for me in NYC), it will display a UTC+3 time as if DST was applied (tzdata2016f not being used). In case there are any Googlers on the list want to raise awareness internally... -Andrew

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[PROPOSED PATCH 1/5] zic now omits some mkdir and stat system calls
by Paul Eggert Sept. 6, 2016

Sept. 6, 2016

* NEWS: Document this. * zic.c (mkdirs): Do not mkdir a root directory. Avoid unnecessary stat call. --- NEWS | 2 ++ zic.c | 24 +++++++++++++----------- 2 files changed, 15 insertions(+), 11 deletions(-) diff --git a/NEWS b/NEWS index f5a0b13..192deb7 100644 --- a/NEWS +++ b/NEWS @@ -55,6 +55,8 @@ Unreleased, experimental changes stamps on the reference platform. (Thanks to Alexander Belopolsky for reporting the bug and suggesting a way forward.) + zic now avoids some unnecessary mkdir and stat system calls. + zdump has a new -i option to generate transitions in a more-compact but still human-readable format. This option is experimental, and the output format may change in future versions. diff --git a/zic.c b/zic.c index b8bd0a6..5ff78b4 100644 --- a/zic.c +++ b/zic.c @@ -3027,25 +3027,27 @@ mkdirs(char *argname) if (argname == NULL || *argname == '\0') return true; cp = name = ecpyalloc(argname); - while ((cp = strchr(cp + 1, '/')) != 0) { - *cp = '\0'; + + /* Do not mkdir a root directory, as it must exist. */ #ifdef HAVE_DOS_FILE_NAMES - /* - ** DOS drive specifier? - */ - if (is_alpha(name[0]) && name[1] == ':' && name[2] == '\0') { - *cp = '/'; - continue; - } + if (is_alpha(name[0]) && name[1] == ':') + cp += 2; #endif + while (*cp == '/') + cp++; + + for (; (cp = strchr(cp, '/')) != 0; cp++) { + *cp = '\0'; /* ** Try to create it. It's OK if creation fails because ** the directory already exists, perhaps because some - ** other process just created it. + ** other process just created it. For simplicity do + ** not check first whether it already exists, as that + ** is checked anyway if the mkdir fails. */ if (mkdir(name, MKDIR_UMASK) != 0) { int err = errno; - if (itsdir(name) <= 0) { + if (err != EEXIST && itsdir(name) <= 0) { char const *e = strerror(err); warning(_("%s: Can't create directory" " %s: %s"), -- 2.7.4

1 4

[PROPOSED PATCH 1/3] Call the new tarball experimental
by Paul Eggert Sept. 6, 2016

Sept. 6, 2016

* Makefile (tzdata$(VERSION).tar.gz): Omit $(TZS). * NEWS: Call the new format experimental, and say it has to2050.tzs. Do not imply a time limit for the old format. * README, tz-link.htm: Bring back traditional two-tarball recipe. * tz-how-to.html: Defer to tz-link.htm for tarball link. * tz-link.htm: Update some URLs. --- Makefile | 2 +- NEWS | 33 ++++++++++++++++----------------- README | 11 +++++++++++ tz-how-to.html | 3 +-- tz-link.htm | 52 ++++++++++++++++++++++++++++------------------------ 5 files changed, 57 insertions(+), 44 deletions(-) diff --git a/Makefile b/Makefile index 90363e9..31a2ec5 100644 --- a/Makefile +++ b/Makefile @@ -683,7 +683,7 @@ tzcode$(VERSION).tar.gz: set-timestamps.out tzdata$(VERSION).tar.gz: set-timestamps.out LC_ALL=C && export LC_ALL && \ - tar $(TARFLAGS) -cf - $(COMMON) $(DATA) $(MISC) $(TZS) | \ + tar $(TARFLAGS) -cf - $(COMMON) $(DATA) $(MISC) | \ gzip $(GZIPFLAGS) > $@ tzdb-$(VERSION).tar.lz: set-timestamps.out diff --git a/NEWS b/NEWS index e61a992..6cbdbd7 100644 --- a/NEWS +++ b/NEWS @@ -63,20 +63,18 @@ Unreleased, experimental changes Changes to build procedure - The tz distribution has a new file to2050.tzs that contains what - should be the output of 'zdump -i -c 2050' on primary zones. - 'make check' now checks that zdump generates this output. - - A new distribution format is available in the tarball - tzdb-VERSION.tar.lz and the signature tzdb-VERSION.tar.lz.asc. - The new tarball has the contents of tzcodeVERSION.tar.gz and - tzdataVERSION.tar.gz, in a single top-level directory 'tzdb' with - all other files under this directory, as is typical for software - distributions. The new format is intended to replace the old - tarball pair. The old format will continue to be distributed for - a while. The new format uses lzip compression, which is smaller - than gzip; see <http://www.nongnu.org/lzip/lzip.html>. - (Thanks to Antonio Diaz Diaz and Oscar van Vlijmen for comments.) + An experimental distribution format is available in the tarball + tzdb-VERSION.tar.lz with signature file tzdb-VERSION.tar.lz.asc. + It unpacks to a top-level directory containing the code and data + of the traditional two-tarball format, along with extra data that + may be useful. The traditional format will continue to be + distributed. (Thanks to Antonio Diaz Diaz, Oscar van Vlijmen, and + many others for comments about the experimental format.) + + The experimental distribution contains a file to2050.tzs that + contains what should be the output of 'zdump -i -c 2050' on + primary zones. If this file is available, 'make check' now checks + that zdump generates this output. 'make check_web' now works on Fedora-like distributions. @@ -3613,14 +3611,15 @@ This file contains copies of the part of each release announcement that talks about the changes in that release. The text has been adapted and reformatted for the purposes of this file. -Typically a release R consists of a pair of tarball files, +Traditionally a release R consists of a pair of tarball files, tzcodeR.tar.gz and tzdataR.tar.gz. However, some releases (e.g., code2010a, data2012c) consist of just one or the other tarball, and a few (e.g., code2012c-data2012d) have tarballs with mixed version -numbers. +numbers. Recent releases also come in an experimental format +consisting of a single tarball tzdb-R.tar.lz with extra data. Release time stamps are taken from the release's commit (for newer, -git releases), from the newest file in the tarball (for older +Git-based releases), from the newest file in the tarball (for older releases, where this info is available) or from the email announcing the release (if all else fails; these are marked with a time zone of -0000 and an "is missing!" comment). diff --git a/README b/README index ba0b790..8a09aa2 100644 --- a/README +++ b/README @@ -13,6 +13,17 @@ and daylight-saving rules. Here is a recipe for acquiring, building, installing, and testing the tz distribution on a GNU/Linux or similar host. +To acquire the distribution, run the following shell commands: + + mkdir tz + cd tz + wget --retr-symlinks 'ftp://ftp.iana.org/tz/tz*-latest.tar.gz' + gzip -dc tzcode-latest.tar.gz | tar -xf - + gzip -dc tzdata-latest.tar.gz | tar -xf - + +Alternatively, the following shell commands acquire the same +distribution, with extra data useful for regression testing: + wget --retr-symlinks 'ftp://ftp.iana.org/tz/tzdb-latest.tar.lz' lzip -dc tzdb-latest.tar.lz | tar -xf - diff --git a/tz-how-to.html b/tz-how-to.html index 7d9d521..a94759e 100644 --- a/tz-how-to.html +++ b/tz-how-to.html @@ -12,8 +12,7 @@ Database</a> Source Files</h2> times of day from the <a href="tz-link.htm">tz database</a> source files. It might be helpful, but not absolutely necessary, for the reader to have already downloaded the -<a href="http://www.iana.org/time-zones/repository/tzdb-latest.tar.lz">latest -release of the database</a> and become familiar with the basic layout +latest release of the database and become familiar with the basic layout of the data files. The format is explained in the “man page” for the zic compiler, <code>zic.8.txt</code>, in the <code>code</code> subdirectory.</p> diff --git a/tz-link.htm b/tz-link.htm index 8b05470..52bb492 100644 --- a/tz-link.htm +++ b/tz-link.htm @@ -10,7 +10,7 @@ content="Sources for time zone and daylight saving time data"> <meta name="DC.Creator" content="Eggert, Paul"> <meta name="DC.Contributor" content="Olson, Arthur David"> -<meta name="DC.Date" content="2016-08-30"> +<meta name="DC.Date" content="2016-09-05"> <meta name="DC.Description" content="Sources of information about time zones and daylight saving time"> <meta name="DC.Identifier" @@ -42,7 +42,7 @@ This database (often called <code>zoneinfo</code> or <code><abbr>tz</abbr></code>) is used by several implementations, including -<a href="http://www.gnu.org/software/libc/">the +<a href="https://www.gnu.org/software/libc/">the <abbr title="GNU's Not Unix">GNU</abbr> C Library</a> (used in <a href="https://en.wikipedia.org/wiki/Linux"><abbr>GNU</abbr>/Linux</a>), @@ -108,33 +108,35 @@ for Eastern Standard Time in the <abbr>US</abbr>.</p> <p> The following <a href="https://en.wikipedia.org/wiki/Unix_shell">shell</a> commands download -the latest release to a <abbr>GNU</abbr>/Linux or similar host; -see the downloaded -<code>README</code> file for what to do next.</p> -<pre style="margin-left: 2em"><code><a href="http://www.gnu.org/software/wget/">wget</a> --retr-symlinks 'ftp://ftp.iana.org/tz/tzdb-latest.tar.lz' -<a href="http://www.nongnu.org/lzip/">lzip</a> -dc tzdb-latest.tar.lz | <a href="http://www.gnu.org/software/tar/">tar</a> -xf - +the latest release's two +<a href="https://en.wikipedia.org/wiki/Tar_(computing)">tarballs</a> +to a <abbr>GNU</abbr>/Linux or similar host.</p> +<pre style="margin-left: 2em"><code>mkdir tzdb +cd tzdb +<a href="https://www.gnu.org/software/wget/">wget</a> --retr-symlinks 'ftp://ftp.iana.org/tz/tz*-latest.tar.gz' +<a href="https://www.gnu.org/software/gzip/">gzip</a> -dc tzcode-latest.tar.gz | <a href="https://www.gnu.org/software/tar/">tar</a> -xf - +gzip -dc tzdata-latest.tar.gz | tar -xf - </code></pre> -<p>This uses a convenience link to the -<a href="ftp://ftp.iana.org/tz/tzdb-latest.tar.lz">latest version</a> -archived in the +<p>Alternatively, the following shell commands download the same +release in a single-tarball format containing extra data +useful for regression testing:</p> +<pre style="margin-left: 2em"><code>wget --retr-symlinks 'ftp://ftp.iana.org/tz/tzdb-latest.tar.lz' +<a href="http://www.nongnu.org/lzip/">lzip</a> -dc tzdb-latest.tar.lz | tar -xf - +</code></pre> +<p>These commands use convenience links to the latest of the <a href="ftp://ftp.iana.org/tz/releases/"><abbr title="File Transfer Protocol">FTP</abbr> releases</a> of the <code><abbr>tz</abbr></code> database. -Archived versions are in files named <code>tzdb-<var>V</var>.tar.lz</code>, +Older releases are in files named +<code>tzcode<var>V</var>.tar.gz</code>, +<code>tzdata<var>V</var>.tar.gz</code>, and +<code>tzdb-<var>V</var>.tar.lz</code>, where <code><var>V</var></code> is the version. -For compatibility with releases before 2016g, a -<a href="https://www.gnu.org/software/gzip/">gzip</a>-compressed two-tarball -distribution is also available, where the code is in the -file <code>tzcode<var>C</var>.tar.gz</code>, -where <code><var>C</var></code> is the code's version; -similarly, the data entries are in <code>tzdata<var>D</var>.tar.gz</code>, -where <code><var>D</var></code> is the data's version. Since 1996, each version has been a four-digit year followed by lower-case letter (<samp>a</samp> through <samp>z</samp>, then <samp>za</samp> through <samp>zz</samp>, then <samp>zza</samp> -through <samp>zzz</samp>, and so on).</p> -<p> -The code and data files can also be obtained from the +through <samp>zzz</samp>, and so on). +The releases can also be obtained from the <a href="http://www.iana.org/time-zones">Time Zone Database website</a> of the <a href="http://www.iana.org">Internet Assigned Numbers Authority (IANA)</a>. @@ -144,6 +146,8 @@ in <a href="http://git-scm.com">Git</a> form from <a href="https://github.com">GitHub</a>; be careful, as this repository is less well tested and probably contains more errors. <p> +After extracting a distribution's files, see its +<code>README</code> file for what to do next. The code lets you compile the <code><abbr>tz</abbr></code> source files into machine-readable binary files, one for each location. It also lets you read a <code><abbr>tz</abbr></code> binary file and interpret time stamps for that @@ -295,7 +299,7 @@ program that compiles <code><abbr>tz</abbr></code> source into iCalendar-compatible VTIMEZONE files. Vzic is freely available under the <a -href="http://www.gnu.org/copyleft/gpl.html"><abbr>GNU</abbr> +href="https://www.gnu.org/copyleft/gpl.html"><abbr>GNU</abbr> General Public License (<abbr title="General Public License">GPL</abbr>)</a>.</li> <li><a href="https://sourceforge.net/projects/tzical/">tziCal – tz @@ -357,7 +361,7 @@ Advanced date, time and interval library for Java</a> contains a class <code>net.time4j.tool.TimezoneRepositoryCompiler</code> that compiles <code><abbr>tz</abbr></code> source into a binary format. Time4J is available under the <a -href="http://www.gnu.org/copyleft/lesser.html"><abbr>GNU</abbr> Lesser +href="https://www.gnu.org/copyleft/lesser.html"><abbr>GNU</abbr> Lesser General Public License (<abbr title="Lesser General Public License">LGPL</abbr>)</a>.</li> <li><abbr>ICU</abbr> (mentioned above) contains compilers and @@ -413,7 +417,7 @@ license.</li> <h2>Other <code><abbr>tz</abbr></code> binary file readers</h2> <ul> <li>The <a -href="http://www.gnu.org/software/libc/"><abbr>GNU</abbr> C +href="https://www.gnu.org/software/libc/"><abbr>GNU</abbr> C Library</a> has an independent, thread-safe implementation of a <code><abbr>tz</abbr></code> binary file reader. -- 2.7.4

1 2

tzdata for 2016 leap seconds
by Jimmy Wang (jcwang) Sept. 5, 2016

Sept. 5, 2016

Hi Paul et al, We heard that the tzdata for 2016 leap seconds would be published around Oct. Is there anyway that this can be published sooner? Many of our upstream vendors won't release their tzdata update until the official tzdata is published. Thanks, Jimmy

7 11