June 2016 - tz - lists.iana.org

Egypt DST
by Mina Samuel June 14, 2016

June 14, 2016

Here below the confirmation link from official government website regarding Egypt DST 2016: http://www.cabinet.gov.eg/Media/NewsDetails.aspx?id=30512 ========= 3. On the basis of work to take coordinated world time on the GMT basis for determining the legal time in the Arab Republic of Egypt, the cabinet approved the draft decision of the PM which provides for the timing of Egypt by adding two hours to the coordinated world time (GMT 2). As provided for in the draft resolution that the cabinet may amend the legal time stipulated in article 1 of this law during the period or specific periods of the year in accordance with the considerations of the true connoisseur. The draft resolution would be in addition to the timing of a specific legal special decision on timing and legal status, the starting from the beginning on Friday, 8 July 2016 until the end of the day on Thursday, 27 October of the same year. ========

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[PATCH] Update tz-link.htm URLs
by Paul Eggert June 14, 2016

June 14, 2016

* tz-link.htm: Update URLs. Also, add Chromium OS, and the tzdist WG is now concluded. --- tz-link.htm | 79 +++++++++++++++++++++++++++++++------------------------------ 1 file changed, 40 insertions(+), 39 deletions(-) diff --git a/tz-link.htm b/tz-link.htm index b925c95..adb4fac 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="2016-05-29"> +<meta name="DC.Date" content="2016-06-14"> <meta name="DC.Description" content="Sources of information about time zones and daylight saving time"> <meta name="DC.Identifier" @@ -46,13 +46,14 @@ including <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>), -<a href="http://www.android.com">Android</a>, -<a href="https://developer.mozilla.org/en-US/Firefox_OS">Firefox +<a href="https://www.android.com">Android</a>, +<a href="https://developer.mozilla.org/en-US/docs/Mozilla/B2G_OS">B2G <abbr title="Operating System">OS</abbr></a>, <a href="https://www.freebsd.org">Free<abbr title="Berkeley Software Distribution">BSD</abbr></a>, <a href="http://netbsd.org">Net<abbr>BSD</abbr></a>, <a href="http://www.openbsd.org">Open<abbr>BSD</abbr></a>, +<a href="http://www.chromium.org/chromium-os">Chromium OS</a>, <a href="https://cygwin.com">Cygwin</a>, <a href="http://www.delorie.com/djgpp/"><abbr title="DJ's GNU Programming Platform">DJGPP</abbr></a>, @@ -65,7 +66,7 @@ title="Advanced Interactive eXecutive">AIX</abbr></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://www8.hp.com/us/en/products/servers/openvms/overview.html">Open<abbr +<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 @@ -176,17 +177,17 @@ title="linefeed">LF</abbr></a>, which can be modified by common text editors such as <a href="https://www.gnu.org/software/emacs/">GNU Emacs</a>, <a href="https://wiki.gnome.org/Apps/Gedit">gedit</a>, and -<a href="http://www.vim.org/">vim</a>. One +<a href="http://www.vim.org">vim</a>. One editor has a package to simplify editing further:</p> <ul> <li><a href="https://packagecontrol.io/packages/zoneinfo">Sublime -zoneinfo</a> is a <a href="http://www.sublimetext.com/">Sublime +zoneinfo</a> is a <a href="http://www.sublimetext.com">Sublime Text</a> package for syntax highlighting <code><abbr>tz</abbr></code> source files.</li> </ul> <p> For further information about updates, please see -<a href="http://tools.ietf.org/html/rfc6557">Procedures for +<a href="https://tools.ietf.org/html/rfc6557">Procedures for Maintaining the Time Zone Database</a> (Internet <abbr title="Request For Comments">RFC</abbr> 6557).</p> <h2>Commentary on the <code><abbr>tz</abbr></code> database</h2> @@ -214,7 +215,7 @@ These are listed roughly in ascending order of complexity and fanciness. <ul> <li><a href="http://time.is">Time.is</a> shows locations' time and zones in a simple format.</li> -<li><a href="https://www.timejones.com/">TimeJones.com</a> is a simple +<li><a href="https://www.timejones.com">TimeJones.com</a> is a simple time zone converter.</li> <li><a href="http://twiki.org/cgi-bin/xtra/tzdatepick.html">Date and Time Gateway</a> @@ -233,36 +234,36 @@ Worldwide</a> lets you sort zone names and convert times.</li> calculates the current time difference between locations.</li> <li><a href="http://www.wx-now.com">Weather Now</a> lists the weather too.</li> <li><a href="http://www.thetimenow.com">The Time Now</a> also lists weather.</li> -<li><a href="http://worldtime.io">worldtime.io</a> +<li><a href="https://worldtime.io">worldtime.io</a> also contains data about time zone boundaries; it supports queries via place 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 -<a href="http://datatracker.ietf.org/wg/tzdist/charter/">Time Zone Data -Distribution Service (tzdist) working group</a> has defined <a -href="http://tools.ietf.org/html/rfc7808">TZDIST</a> +<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="http://tools.ietf.org/html/rfc7809">calendar access +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 is based +(Internet <abbr>RFC</abbr> 7809). This work was based on the iCalendar and CalConnect efforts described below.</li> -<li>The <a href="http://tools.ietf.org/html/rfc5545"> +<li>The <a href="https://tools.ietf.org/html/rfc5545"> Internet Calendaring and Scheduling Core Object Specification (iCalendar)</a> (Internet <abbr>RFC</abbr> 5445) covers time zone data; see its VTIMEZONE calendar component. The iCalendar format requires specialized parsers and generators; a -variant <a href="http://tools.ietf.org/html/rfc6321">xCal</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 title="Extensible Markup Language">XML</abbr></a> format, and a variant -<a href="http://tools.ietf.org/html/rfc7265">jCal</a> +<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="http://calconnect.org">CalConnect, The Calendaring and Scheduling +<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 @@ -270,7 +271,7 @@ 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="http://calconnect.org/tc-timezone.shtml">TIMEZONE +<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 @@ -288,7 +289,7 @@ data</a> converted from <code><abbr>tz</abbr></code>.</li> </ul> <h2>Other <code><abbr>tz</abbr></code> compilers</h2> <ul> -<li><a href="http://sourceforge.net/projects/vzic/">Vzic</a> is a <a +<li><a href="https://sourceforge.net/projects/vzic/">Vzic</a> is a <a href="https://en.wikipedia.org/wiki/C_%28programming_language%29">C</a> program that compiles <code><abbr>tz</abbr></code> source into iCalendar-compatible VTIMEZONE files. @@ -297,21 +298,21 @@ available under the <a href="http://www.gnu.org/copyleft/gpl.html"><abbr>GNU</abbr> General Public License (<abbr title="General Public License">GPL</abbr>)</a>.</li> -<li><a href="http://sourceforge.net/projects/tzical/">tziCal – tz +<li><a href="https://sourceforge.net/projects/tzical/">tziCal – tz database conversion utility</a> is like Vzic, except for the <a -href="https://msdn.microsoft.com/netframework">.NET framework</a> +href="https://www.microsoft.com/net">.NET framework</a> and with a <abbr>BSD</abbr>-style license.</li> <li><a href="http://search.cpan.org/dist/DateTime-TimeZone/">DateTime::TimeZone</a> contains a script <code>parse_olson</code> that compiles -<code><abbr>tz</abbr></code> source into <a href="http://www.perl.org">Perl</a> +<code><abbr>tz</abbr></code> source into <a href="https://www.perl.org">Perl</a> modules. It is part of the Perl <a href="http://datetime.perl.org">DateTime Project</a>, which is freely available under both the <abbr>GPL</abbr> and the Perl Artistic License. DateTime::TimeZone also contains a script <code>tests_from_zdump</code> that generates test cases for each clock transition in the <code><abbr>tz</abbr></code> database.</li> -<li>The <a href="http://howardhinnant.github.io/tz.html">Time Zone +<li>The <a href="https://howardhinnant.github.io/date/tz.html">Time Zone Database Parser</a> is a <a href="https://en.wikipedia.org/wiki/C%2B%2B">C++</a> parser and runtime library. It is freely available under the @@ -328,7 +329,7 @@ into an <abbr>ICU</abbr>-specific format. <abbr>ICU</abbr> is freely available under a <abbr>BSD</abbr>-style license.</li> <li>The <a href="https://github.com/lau/tzdata">Tzdata</a> package for -the <a href="http://elixir-lang.org/">Elixir</a> language downloads +the <a href="http://elixir-lang.org">Elixir</a> language downloads and compiles tz source and exposes <abbr title="Application Program Interface">API</abbr>s for use. It is freely available under the <abbr @@ -432,23 +433,23 @@ in its JavaScript library for time zone conversion. Dates before 1970 are not supported.</li> <li>The <a href="http://hackage.haskell.org/package/timezone-olson">timezone-olson</a> -package contains <a href="http://haskell.org">Haskell</a> code that +package contains <a href="https://www.haskell.org">Haskell</a> code that parses and uses <code><abbr>tz</abbr></code> binary data. It is freely available under a <abbr>BSD</abbr>-style license.</li> </ul> <h2>Other <code><abbr>tz</abbr></code>-based time zone software</h2> <ul> <li><a href="https://foxclocks.org">FoxClocks</a> -is an extension for <a href="http://www.google.com/chrome/">Google +is an extension for <a href="https://www.google.com/chrome/">Google Chrome</a> and for <a href="https://developer.mozilla.org/en-US/docs/Mozilla/Tech/Toolkit_API">Mozilla Toolkit</a> applications like <a href="https://www.mozilla.org/en-US/firefox/new/">Firefox</a> and <a href="https://www.mozilla.org/en-US/thunderbird/">Thunderbird</a>. It displays multiple clocks in the application window, and has a mapping -interface to <a href="http://www.google.com/earth/">Google Earth</a>. +interface to <a href="https://www.google.com/earth/">Google Earth</a>. It is freely available under the <abbr>GPL</abbr>.</li> -<li><a href="http://golang.org">Go programming language</a> +<li><a href="https://golang.org">Go programming language</a> implementations contain a copy of a 32-bit subset of a recent <code><abbr>tz</abbr></code> database in a Go-specific format.</li> @@ -464,7 +465,7 @@ data (mentioned below) used by classes such as <a href="https://msdn.microsoft.com/en-us/library/windows/apps/windows.globalization…"><code>DateTimeFormatter</code></a>. <a -href="http://blogs.msdn.com/b/bclteam/archive/2007/06/07/exploring-windows-time-z…">Exploring +href="https://blogs.msdn.microsoft.com/bclteam/2007/06/07/exploring-windows-time-…">Exploring Windows Time Zones with <code>System.TimeZoneInfo</code></a> describes the older, proprietary method of Microsoft Windows 2000 and later, which stores time zone data in the @@ -495,7 +496,7 @@ licenses</a> to <code><abbr>tz</abbr></code> contributors.</li> </ul> <h2>Other time zone databases</h2> <ul> -<li><a href="http://www.astro.com/cgi/aq.cgi">Atlas Query</a> +<li><a href="http://www.astro.com/atlas">Time-zone Atlas</a> is Astrodienst's Web version of Shanks and Pottenger's time zone history atlases published in both <a href="http://astrocom.com/astrology-products/software/acs-atlas-software">computer</a> @@ -557,8 +558,8 @@ sets of <code><abbr>tz</abbr></code> regions.</li> <li>The <a href="https://github.com/bradfitz/latlong">latlong package</a> maps geographical coordinates to a <code><abbr>tz</abbr></code> region. It is written in Go and is freely available under the Apache License.</li> -<li><a href="http://derickrethans.nl/what-time-is-it.html">What Time -is It Here?</a> applies <a href="http://www.mongodb.org">MongoDB</a> +<li><a href="https://derickrethans.nl/what-time-is-it.html">What Time +is It Here?</a> applies <a href="https://www.mongodb.com">MongoDB</a> geospatial query operators to shapefiles' data.</li> <li><a href="http://statoids.com/statoids.html">Administrative Divisions of Countries ("Statoids")</a> contains lists of @@ -593,7 +594,7 @@ surveys the evolution of timekeeping.</li> <li><a href="http://www.webexhibits.org/daylightsaving/">About Daylight Saving Time – History, rationale, laws & dates</a> is an overall history of <abbr>DST</abbr>.</li> -<li><a href="http://www.w3.org/TR/timezone/">Working with Time Zones</a> +<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, @@ -693,7 +694,7 @@ 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> <li><a -href="http://tools.ietf.org/html/rfc4833">Timezone +href="https://tools.ietf.org/html/rfc4833">Timezone Options for <abbr title="Dynamic Host Configuration Protocol">DHCP</abbr></a> (Internet <abbr>RFC</abbr> 4833) specifies a <a @@ -738,7 +739,7 @@ dedicated not only to leap seconds but to precise time and frequency in general. It covers the state of the art in amateur timekeeping, and how the art has progressed over the past few decades.</li> <li><a -href="http://www.iers.org/IERS/EN/Publications/Bulletins/bulletins.html"><abbr +href="https://www.iers.org/IERS/EN/Publications/Bulletins/bulletins.html"><abbr title="International Earth Rotation and Reference Systems Service">IERS</abbr> Bulletins</a> contains official publications of the International Earth Rotation and Reference Systems Service, which decides @@ -778,17 +779,17 @@ title="International Organization for Standardization">ISO</abbr> 8601:2004 – Data elements and interchange formats – Information interchange – Representation of dates and times</a>.</li> <li> -<a href="http://www.w3.org/TR/xmlschema-2/#dateTime"><abbr>XML</abbr> +<a href="https://www.w3.org/TR/xmlschema-2/#dateTime"><abbr>XML</abbr> Schema: Datatypes – dateTime</a> specifies a format inspired by <abbr>ISO</abbr> 8601 that is in common use in <abbr>XML</abbr> data.</li> <li> -<a href="http://tools.ietf.org/html/rfc5322">Internet +<a href="https://tools.ietf.org/html/rfc5322">Internet Message Format</a> (Internet <abbr>RFC</abbr> 5322) §3.3 specifies the time notation used in email and <a href="https://en.wikipedia.org/wiki/Hypertext_Transfer_Protocol"><abbr>HTTP</abbr></a> headers.</li> <li> -<a href="http://tools.ietf.org/html/rfc3339">Date and Time +<a href="https://tools.ietf.org/html/rfc3339">Date and Time on the Internet: Timestamps</a> (Internet <abbr>RFC</abbr> 3339) specifies an <abbr>ISO</abbr> 8601 profile for use in new Internet -- 2.7.4

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Egypt TZ Update
by ahmed mekawy June 14, 2016

June 14, 2016

Good day,Egypt announced recently that it will return to DST in Julymay you please advise when you are planning to release a new TZ data reflecting this.

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daylight saving and hospital admissions due to trampolines
by Paul Eggert June 10, 2016

June 10, 2016

A research paper published today concludes that in New Zealand, the October spring-forward transition is associated with increased incidence of hospital admissions for trampoline-related injuries for children aged 0-15. The most common injuries are fracture of the radius and/or ulna, and humeral fracture. Children aged 5-9 were responsible for almost half the studied injuries, followed by children aged 0-4. Sources: Yule MS, Krishna S, Rahiri J-S, Hill AG. Trampoline-associated injuries are more common in children in spring. NZ Med J 129:1436 (2016-06-10), 6916. https://www.nzma.org.nz/journal/read-the-journal/all-issues/2010-2019/2016/… Thomas R. Trampoline-associated injuries are more common in children in spring. stuff.co.nz (2016-06-10). http://www.stuff.co.nz/national/80886934/Trampoline-injuries-spike-in-sprin…

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Asia/Tomsk
by Victor Sudakov June 7, 2016

June 7, 2016

Dear Colleagues, As a citizen of Tomsk, I would like to raise some questions concerning the recent addition of the Asia/Tomsk timezone. As you know, this time zone's abbreviation is all numeric: Zone Asia/Tomsk 5:39:51 - LMT 1919 Dec 22 6:00 - +06 1930 Jun 21 7:00 Russia +07/+08 1991 Mar 31 2:00s 6:00 Russia +06/+07 1992 Jan 19 2:00s 7:00 Russia +07/+08 2002 May 1 3:00 6:00 Russia +06/+07 2011 Mar 27 2:00s 7:00 - +07 2014 Oct 26 2:00s 6:00 - +06 2016 May 29 2:00s 7:00 - +07 In my opinion, it is bad for two reasons: 1. zic warns that 'warning: time zone abbreviation differs from POSIX standard (+06)' 2. Such an abbreviation is not user friendly and even borders on offensive. A locality deserves a name! Could we do something about Asia/Tomsk and other zones with share the same fate: Europe/Astrakhan, Europe/Kirov, Europe/Ulyanovsk, Asia/Barnaul? Thank you for your attention. -- Victor Sudakov, VAS4-RIPE, VAS47-RIPN sip:sudakov@sibptus.tomsk.ru

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Identifying timezones ...
by Lester Caine June 3, 2016

June 3, 2016

I feel it's worth pointing out something which seems to have got lost during the current discussion ... The shorthand abbreviation for a offset may or may not indicate that a time is affected by daylight savings. Taking the simple example of 'BST' which is an abbreviation that has a sort of statutory definition in the 'British Summer Time' laws, one knows that there is a related start and stop date and so adding a couple of weeks delay may also require a change of offset, but if the same date is posted as 'GMT' there is no information that 'BST' changes are relevant. I get the impression that with all of the current upheaval in Russia that some areas are introducing daylight saving, while others are standardising on one or other of an 'abbreviation' without the matching switch? The ONLY ident that correctly provides the correct time sequence. both current and historic is the full name, but even that now gets tricky with the improving accuracy of pre 1970 data? This new data either needs it's own 'shorthand', or we do need to drop the shorthand! If one is doing the job of providing a date and time which must sit accurately in an historic context, then the 'local' offset from UTC has to be stored as the timezone name and VERSION of tz used. Simply using 'EST' is of no use what so ever, while just using 'Asia/Tomsk' falls flat on it's face when you don't know which rules were active then the timestamp was stored. In my book the only clean way of managing historic data is to maintain a UTC normalised timestamp along with the location data to provide a local time. If an event occurs that casts doubt on the offset then a new UTC time may needed, and it's the identified change that flags up the advise that needs to accompany the notification. On current calendars that may well be that Ramadan is a week early or late, but the 'abbreviations' used do not necessarily change as a result? They are just a piece of text accompanying the rule which should actually be a translated note from the rule set since abbreviations may not be unique. -- Lester Caine - G8HFL ----------------------------- Contact - http://lsces.co.uk/wiki/?page=contact L.S.Caine Electronic Services - http://lsces.co.uk EnquirySolve - http://enquirysolve.com/ Model Engineers Digital Workshop - http://medw.co.uk Rainbow Digital Media - http://rainbowdigitalmedia.co.uk

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