<div dir="ltr">Hi Dear Brian,<div><br><div>Thanks for your response,</div><div><br></div><div>I saw that this changes is reflected in documents and it is working correctly in Microsoft windows. but when I download the latest and (some pre-release) of tzdata from this below links</div><div><a href="https://www.iana.org/time-zones/repository/tzdata-latest.tar.gz">https://www.iana.org/time-zones/repository/tzdata-latest.tar.gz</a>, I saw something different in the "asia" file , section Iran that is as below:</div><div><br></div><div># Rule NAME FROM TO - IN ON AT SAVE LETTER/S<br># Work around a bug in zic 2022a and earlier.<br>Rule Iran 1910 only - Jan 1 00:00 0 -<br>#<br>Rule Iran 1977 only - Mar 21 23:00 1:00 -<br>Rule Iran 1977 only - Oct 20 24:00 0 -<br>Rule Iran 1978 only - Mar 24 24:00 1:00 -<br>Rule Iran 1978 only - Aug 5 01:00 0 -<br>Rule Iran 1979 only - May 26 24:00 1:00 -<br>Rule Iran 1979 only - Sep 18 24:00 0 -<br>Rule Iran 1980 only - Mar 20 24:00 1:00 -<br>Rule Iran 1980 only - Sep 22 24:00 0 -<br>Rule Iran 1991 only - May 2 24:00 1:00 -<br>Rule Iran 1992 1995 - Mar 21 24:00 1:00 -<br>Rule Iran 1991 1995 - Sep 21 24:00 0 -<br>Rule Iran 1996 only - Mar 20 24:00 1:00 -<br>Rule Iran 1996 only - Sep 20 24:00 0 -<br>Rule Iran 1997 1999 - Mar 21 24:00 1:00 -<br>Rule Iran 1997 1999 - Sep 21 24:00 0 -<br>Rule Iran 2000 only - Mar 20 24:00 1:00 -<br>Rule Iran 2000 only - Sep 20 24:00 0 -<br>Rule Iran 2001 2003 - Mar 21 24:00 1:00 -<br>Rule Iran 2001 2003 - Sep 21 24:00 0 -<br>Rule Iran 2004 only - Mar 20 24:00 1:00 -<br>Rule Iran 2004 only - Sep 20 24:00 0 -<br>Rule Iran 2005 only - Mar 21 24:00 1:00 -<br>Rule Iran 2005 only - Sep 21 24:00 0 -<br>Rule Iran 2008 only - Mar 20 24:00 1:00 -<br>Rule Iran 2008 only - Sep 20 24:00 0 -<br>Rule Iran 2009 2011 - Mar 21 24:00 1:00 -<br>Rule Iran 2009 2011 - Sep 21 24:00 0 -<br>Rule Iran 2012 only - Mar 20 24:00 1:00 -<br>Rule Iran 2012 only - Sep 20 24:00 0 -<br>Rule Iran 2013 2015 - Mar 21 24:00 1:00 -<br>Rule Iran 2013 2015 - Sep 21 24:00 0 -<br>Rule Iran 2016 only - Mar 20 24:00 1:00 -<br>Rule Iran 2016 only - Sep 20 24:00 0 -<br>Rule Iran 2017 2019 - Mar 21 24:00 1:00 -<br>Rule Iran 2017 2019 - Sep 21 24:00 0 -<br>Rule Iran 2020 only - Mar 20 24:00 1:00 -<br>Rule Iran 2020 only - Sep 20 24:00 0 -<br>Rule Iran 2021 2022 - Mar 21 24:00 1:00 -<br>Rule Iran 2021 2022 - Sep 21 24:00 0 -<br><br># Zone NAME STDOFF RULES FORMAT [UNTIL]<br>Zone Asia/Tehran 3:25:44 - LMT 1916<br> 3:25:44 - TMT 1935 Jun 13 # Tehran Mean Time<br> 3:30 Iran +0330/+0430 1977 Oct 20 24:00<br> 4:00 Iran +04/+05 1979<br> 3:30 Iran +0330/+0430<br></div><div><br></div><div>From the above lines I got the last Rule for DST changes is : "Rule Iran 2021 2022 - Sep 21 24:00 0 " and it is +0330/+0430. So the new DST policy is not reflected in it.</div><div>Please let me know if I am making any mistakes .</div><div><br></div><div>Best Regards,</div><div>Vajiheh Bitarafan</div><div><br></div><div><br></div></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Tue, Apr 9, 2024 at 9:29 PM <<a href="mailto:brian.inglis@systematicsw.ab.ca">brian.inglis@systematicsw.ab.ca</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">On 2024-04-09 07:41, Vajihe Bitarafan via tz wrote:<br>
> I am using some system and I encountered that in some situations Daylight Saving <br>
> Time is not working correctly.<br>
<br>
Please contact your product support to update their time zone and summer <br>
daylight saving time data as this has been known and available for 2 years.<br>
<br>
> From 20 March 2023 , DST has been removed from government Policies and So from <br>
> then there would not be any changes in Time. So Time zone Tehran/IRAN is +3:30 <br>
> for all days of the year.<br>
> I hope it will be reflected in timezone databases and I can see the Joda time is <br>
> updated respectively.<br>
<br>
Updated in 2022b August:<br>
<br>
<a href="https://mm.icann.org/pipermail/tz-announce/2022-August/000071.html" rel="noreferrer" target="_blank">https://mm.icann.org/pipermail/tz-announce/2022-August/000071.html</a><br>
<br>
also in Joda-Time the same month:<br>
<br>
<a href="https://www.joda.org/joda-time/changes-report.html#a2.11.0" rel="noreferrer" target="_blank">https://www.joda.org/joda-time/changes-report.html#a2.11.0</a><br>
<br>
and in other products within the year e.g. 2023 April:<br>
<br>
<a href="https://techcommunity.microsoft.com/t5/daylight-saving-time-time-zone/iran-2023-time-zone-update-now-available/ba-p/3805707" rel="noreferrer" target="_blank">https://techcommunity.microsoft.com/t5/daylight-saving-time-time-zone/iran-2023-time-zone-update-now-available/ba-p/3805707</a><br>
<br>
-- <br>
Take care. Thanks, Brian Inglis Calgary, Alberta, Canada<br>
<br>
La perfection est atteinte Perfection is achieved<br>
non pas lorsqu'il n'y a plus rien à ajouter not when there is no more to add<br>
mais lorsqu'il n'y a plus rien à retirer but when there is no more to cut<br>
-- Antoine de Saint-Exupéry<br>
<br>
</blockquote></div>