Bug #74274 [Com]: Handling DST transitions correctly

From: Date: Tue, 06 Nov 2018 03:08:13 +0000
Subject: Bug #74274 [Com]: Handling DST transitions correctly
References: 1  Groups: php.bugs 
Request: Send a blank email to php-bugs+get-217838@lists.php.net to get a copy of this message 
Edit report at https://bugs.php.net/bug.php?id=74274&edit=1

 ID:                 74274
 Comment by:         Jeremy at jcarnus dot fr
 Reported by:        heiglandreas@php.net
 Summary:            Handling DST transitions correctly
 Status:             Open
 Type:               Bug
 Package:            Date/time related
 Operating System:   Irrelelvant
 PHP Version:        7.1.3
 Block user comment: N
 Private report:     N

 New Comment:

Hi
Is there a way to know when this will be solved ? 
Thanks


Previous Comments:
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[2017-04-05 11:48:54] requinix@php.net

Related To: Bug #74374

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[2017-03-19 12:10:06] heiglandreas@php.net

Further related issues:

https://bugs.php.net/bug.php?id=62331
https://bugs.php.net/bug.php?id=63311
https://bugs.php.net/bug.php?id=63459
https://bugs.php.net/bug.php?id=65811
https://bugs.php.net/bug.php?id=66187
https://bugs.php.net/bug.php?id=67269
https://bugs.php.net/bug.php?id=68286
https://bugs.php.net/bug.php?id=69943
https://bugs.php.net/bug.php?id=72255
https://bugs.php.net/bug.php?id=72398
https://bugs.php.net/bug.php?id=72486


Somewhat related but not actual duplicates:
https://bugs.php.net/bug.php?id=73255

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[2017-03-19 10:09:47] heiglandreas@php.net

Description:
------------
A lot of issues have been tracked regarding DST-Transitions. There also has been an RFC in 2011
(https://wiki.php.net/rfc/datetime_and_daylight_saving_time) which seems to be not implemented yet. 

This is supposed to be a collection of all the issues that have been raised up to now that all
revolve around the same thing:

DateTime doesn't handle the transition from Daylight Saving Time back to Standard Time
correctly. 

https://bugs.php.net/bug.php?id=51051
https://bugs.php.net/bug.php?id=61530
https://bugs.php.net/bug.php?id=62185


This is closely related to an often claimed feature request to evaluate the Timezone-Parameter when
a Timezone-identifier is given in the datetime-string. That would allow DateTime to realize whether
the given time is DaylightSavingTime or Standard-Time and be a much less error prone way than using
'DT' and 'ST' as described in the RFC. Related to this are:

https://bugs.php.net/bug.php?id=61022




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