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Fwd: Historical timezone data for Bonin Islands (Ogasawara)
by Phake Nick May 29, 2019

May 29, 2019

Hello all, I have recently received some new information about timezone history of Bonin Islands, Japan as detailed in the attached message. Because their last time change to return to Japanese time when they return to Japanese rule was right before 1970, it mean per the current tz database rule, the information doesn't warrant creation of a new timezone for Bonin Islands itself and is thus as an anecdotal note for interest purpose only. However, in the attached link, it described some special timekeeping phenomenon regarding Marcus island, another remote island currently owned by Japanese in the same administrative unit as Bonin Islands. Many reports claim that the American coastal guard on the American quarter of the island use its own coastal guard time, and most sources describe the time as UTC+11, being two hours faster than JST used by some Japanese personnel on the island. Some sites describe it as same as Wake Island/Guam time although it would be incorrect to be same as Guam. And then in a few Japanese governmental report from 1980s (from National Institute of Information and Communications Technology) regarding the construction of VLBI facility on the Marcus Island, it claimed that there're three time standard being used on the island at the time which include not just JST (UTC+9) or [US]CG time (UTC+11) but also a JMSDF time (UTC+10) (Japan Maritime Self-Defense Force). Unfortunately there are no other sources that mentioned such time and there are also no information on things like how the tine was used. ---------- Forwarded message --------- From: Wakaba Date: 2019-1-28 Mon 13:48 Subject: Re: Question related to the page 昭和のサマータイム on suikawiki To: Phake Nick >> Hello, I see that there're a lot of information about DST at the time in Japan on Suikawiki, but a special area that's not mentioned in the page os Ogasawara 小笠原諸島 (Bonin Islands) which seems to have its own different history of governance. Do you know where can information related to timezone of the islands can be found? > Unfortunately we have no reliable source on time in US-controlled Ogasawara Islands at the moment. It turns out that National Diet Library of Japan has several reports by Japanese Government officers that describe the time used in islands when they visited there. According to them (and other sources such as newspapers), standard time UTC + 10 (JST + 1) and DST UTC + 11 (JST + 2) was used until its return to Japan at 1968-06-26 00:00 JST. The exact periods of DST are still unknown. I guessed Guam, Mariana, and Bonin and Marcus districts might have synchronized their DST periods, but reports imply they had their own decisions, i.e. there were three or more different time zones. Details: https://wiki.suikawiki.org/n/%E5%B0%8F%E7%AC%A0%E5%8E%9F%E8%AB%B8%E5%B3%B6%…

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Update zone.tab with #KyivNotKiev
by Ігор Чигінь May 29, 2019

May 29, 2019

Hello, it's almost 28 years of using city name of non-existing USSR. I propose to use correct timezone name in zone.tab (also zone1970.tab?) UA +5026+03031 Europe/Kyiv More info from MFA of Ukraine: https://mfa.gov.ua/en/page/open/id/5418 Thanks, Ihor

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https://www.timeanddate.com/news/time/brazil-scraps-dst.html
by DONATELLA SABELLICO May 28, 2019

May 28, 2019

Hi, this is the new Brasil announcement... https://www.timeanddate.com/news/time/brazil-scraps-dst.html We used the tzdb-2019a.tar.lz<https://data.iana.org/time-zones/releases/tzdb-2019a.tar.lz> (452.2kb) It seems they are ok for this year 2019 since I did not see any change DST for incoming Nov. Am I correct? When the new table are planned? thanks ::DISCLAIMER:: -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- The contents of this e-mail and any attachment(s) are confidential and intended for the named recipient(s) only. E-mail transmission is not guaranteed to be secure or error-free as information could be intercepted, corrupted, lost, destroyed, arrive late or incomplete, or may contain viruses in transmission. The e mail and its contents (with or without referred errors) shall therefore not attach any liability on the originator or HCL or its affiliates. Views or opinions, if any, presented in this email are solely those of the author and may not necessarily reflect the views or opinions of HCL or its affiliates. Any form of reproduction, dissemination, copying, disclosure, modification, distribution and / or publication of this message without the prior written consent of authorized representative of HCL is strictly prohibited. If you have received this email in error please delete it and notify the sender immediately. Before opening any email and/or attachments, please check them for viruses and other defects. --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

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Re: [tz] Issue with Africa/Casablanca
by Paul Eggert May 20, 2019

May 20, 2019

David Gauchard wrote: > What would you think of an > additional option like "--near-future" which would always produce not an > empty description for all timezones ? If it's that important for newlib perhaps we should just make it the default, under the argument that a POSIX-compatible prediction, even if wrong during Ramadan, is better than no prediction at all (as that will cause these clients to be wrong the whole year).

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Issue with Africa/Casablanca
by David Gauchard May 18, 2019

May 18, 2019

Hello, Latest version of zic produces an empty TZ string with Africa/Casablanca (and El Aaiun) Would it better be at least GMT0 ? Thanks

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[PROPOSED] Assume zic 2004 or later in "Apr Sun>=25" etc.
by Paul Eggert May 18, 2019

May 18, 2019

* asia (Zion), northamerica (Toronto): Use constructs like "Apr Sun>=25" and "Apr Fri<=1" that have been supported by zic since 2004. Although Solaris 8 used pre-2004 zic, Solaris 8 reached end-of-life in March 2012. * zic.8: State more clearly that "Apr Sun>=25" is allowed. --- asia | 19 +------------------ northamerica | 17 ++++------------- zic.8 | 9 +++++++++ 3 files changed, 14 insertions(+), 31 deletions(-) diff --git a/asia b/asia index f97c830..9518756 100644 --- a/asia +++ b/asia @@ -1782,32 +1782,15 @@ Rule Zion 2004 only - Sep 22 1:00 0 S # # ftp://ftp.cs.huji.ac.il/pub/tz/announcements/2005+beyond.ps -# From Paul Eggert (2012-10-26): -# I used Ephraim Silverberg's dst-israel.el program -# <ftp://ftp.cs.huji.ac.il/pub/tz/software/dst-israel.el> (2005-02-20) -# along with Ed Reingold's cal-hebrew in GNU Emacs 21.4, -# to generate the transitions from 2005 through 2012. -# (I replaced "lastFri" with "Fri>=26" by hand.) -# The spring transitions all correspond to the following Rule: -# -# Rule Zion 2005 2012 - Mar Fri>=26 2:00 1:00 D -# -# but older zic implementations (e.g., Solaris 8) do not support -# "Fri>=26" to mean April 1 in years like 2005, so for now we list the -# springtime transitions explicitly. - # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S -Rule Zion 2005 only - Apr 1 2:00 1:00 D +Rule Zion 2005 2012 - Apr Fri<=1 2:00 1:00 D Rule Zion 2005 only - Oct 9 2:00 0 S -Rule Zion 2006 2010 - Mar Fri>=26 2:00 1:00 D Rule Zion 2006 only - Oct 1 2:00 0 S Rule Zion 2007 only - Sep 16 2:00 0 S Rule Zion 2008 only - Oct 5 2:00 0 S Rule Zion 2009 only - Sep 27 2:00 0 S Rule Zion 2010 only - Sep 12 2:00 0 S -Rule Zion 2011 only - Apr 1 2:00 1:00 D Rule Zion 2011 only - Oct 2 2:00 0 S -Rule Zion 2012 only - Mar Fri>=26 2:00 1:00 D Rule Zion 2012 only - Sep 23 2:00 0 S # From Ephraim Silverberg (2013-06-27): diff --git a/northamerica b/northamerica index 8e5e351..fce043f 100644 --- a/northamerica +++ b/northamerica @@ -1701,19 +1701,10 @@ Rule Toronto 1922 1923 - May Sun>=8 2:00 1:00 D # was meant. Rule Toronto 1922 1926 - Sep Sun>=15 2:00 0 S Rule Toronto 1924 1927 - May Sun>=1 2:00 1:00 D -# The 1927-to-1939 rules can be expressed more simply as -# Rule Toronto 1927 1937 - Sep Sun>=25 2:00 0 S -# Rule Toronto 1928 1937 - Apr Sun>=25 2:00 1:00 D -# Rule Toronto 1938 1940 - Apr lastSun 2:00 1:00 D -# Rule Toronto 1938 1939 - Sep lastSun 2:00 0 S -# The rules below avoid use of Sun>=25 -# (which pre-2004 versions of zic cannot handle). -Rule Toronto 1927 1932 - Sep lastSun 2:00 0 S -Rule Toronto 1928 1931 - Apr lastSun 2:00 1:00 D -Rule Toronto 1932 only - May 1 2:00 1:00 D -Rule Toronto 1933 1940 - Apr lastSun 2:00 1:00 D -Rule Toronto 1933 only - Oct 1 2:00 0 S -Rule Toronto 1934 1939 - Sep lastSun 2:00 0 S +Rule Toronto 1927 1937 - Sep Sun>=25 2:00 0 S +Rule Toronto 1928 1937 - Apr Sun>=25 2:00 1:00 D +Rule Toronto 1938 1940 - Apr lastSun 2:00 1:00 D +Rule Toronto 1938 1939 - Sep lastSun 2:00 0 S Rule Toronto 1945 1946 - Sep lastSun 2:00 0 S Rule Toronto 1946 only - Apr lastSun 2:00 1:00 D Rule Toronto 1947 1949 - Apr lastSun 0:00 1:00 D diff --git a/zic.8 b/zic.8 index 6d893c2..89ea2d9 100644 --- a/zic.8 +++ b/zic.8 @@ -317,6 +317,15 @@ may be abbreviated or spelled out in full. There must be no white space characters within the .B ON field. +The +.q <= +and +.q >= +constructs can result in a day in the neighboring month; +for example, the IN-ON combination +.q "Oct Sun>=31" +stands for the first Sunday on or after October 31, +even if that Sunday occurs in November. .TP .B AT Gives the time of day at which the rule takes effect, -- 2.21.0

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Estimate for a new tzdb release with Brazil rules.
by Chris Woodbury May 17, 2019

May 17, 2019

> Robert Elz kre at munnari.OZ.AU on Tue May 14 07:35:10 UTC 2019 wrote: > > When I once thought I might try that, I got told "git: command not found" > I have no interest whatever in installing that thing, just for this > >kre Wow. Perhaps one might check if "git" was installed. As we've no information as to what kind of system you're running on, it's hard to help you. (It might be as simple as it isn't in your PATH.) After checking the obvious, I usually start with Google: how to install "git" on .... If you're not the sysadmin, perhaps that would be a good place to start, too. She/he may have more motivation, too.

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Decree for Chile DST change
by Juan Correa May 17, 2019

May 17, 2019

I couldn't find the decree for the chilean DST change until today (even when it was published on November 23th on the Official Gazette, I searched for it on december 2018 with no avail) http://www.diariooficial.interior.gob.cl/publicaciones/2018/11/23/42212/01/… The only extra bit of information is that America/Punta_Arenas is confirmed to not change until 2022 -- Juan Correa Poblete PS Labs (http://www.pslabs.cl)

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Some extra information about the Eucla zone
by Gilmore Davidson May 17, 2019

May 17, 2019

After Australia’s clock change last weekend, the national broadcaster has published an article about the Eucla time zone: https://www.abc.net.au/news/2019-04-08/this-remote-stretch-of-desert-has-it… <https://www.abc.net.au/news/2019-04-08/this-remote-stretch-of-desert-has-it…> > Sergeant Chamberlain said when it comes to life on the Nullarbor, the custom made time zone was at the lower end of quirky. Some interesting snippets of information include a rough description of the geographical boundaries... > The time zone exists for about 340 kilometres and takes in the tiny roadhouse communities of Cocklebiddy, Madura, Madura, Eucla and Border Village. …and an indication that the zone has definitely been in existence since before the 1970 cut-off of the database: > Mr Pike has lived on the Nullarbor for 47 years > > […] > > 'Why'? > > "Good question," Mr Pike said. > > "I don't even know that, and it's been going for over 50 years.” This doesn’t change any of the existing data, but could be useful as a reference. Cheers, Gil

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[PROPOSED] Ignore more non-source files
by Paul Eggert May 16, 2019

May 16, 2019

* .gitignore: Ignore *.diff, *.i, *.orig, *.rej, *.tar. Ignore check_* files, as they are created by ‘make check’. --- .gitignore | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/.gitignore b/.gitignore index 1e62d11..cf3b825 100644 --- a/.gitignore +++ b/.gitignore @@ -2,14 +2,20 @@ # This file is in the public domain. *.a *.asc +*.diff +*.i *.o +*.orig *.patch +*.rej +*.tar *.tar.* *.txt *.tzs *.zi *~ ChangeLog +check_* date leapseconds tzselect -- 2.21.0

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