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Bug #77741 DateTimeZone/setTimezone returns wrong values
Submitted: 2019-03-14 12:32 UTC Modified: 2019-03-16 15:31 UTC
From: info at akebono dot nl Assigned: derick (profile)
Status: Assigned Package: Date/time related
PHP Version: 7.2.16 OS: Windows 10
Private report: No CVE-ID: None
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 [2019-03-14 12:32 UTC] info at akebono dot nl 
Description:
------------
Wrong value output. It does not matter whether TimeZoneNameFrom is set to PST or PDT.

Test script:
---------------
TimeZoneNameFrom = 'PST';
TimeZoneNameTo = 'Europe/Amsterdam';
TimeStr = '2019-3-20 23:59:00';

$convertedTime = date_create($TimeStr, new DateTimeZone($TimeZoneNameFrom))->setTimezone(new DateTimeZone($TimeZoneNameTo))->format("j F H.i");

Expected result:
----------------
21 March 07.59 CET

Actual result:
--------------
21 March 08.59 CET

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 [2019-03-16 15:31 UTC] girgias@php.net
-Assigned To: +Assigned To: derick
 [2019-03-16 15:31 UTC] girgias@php.net 
Seems like PHP assumes the transition from Standard time to Summertime occurs at the same time which is not the case with EU/USA.

Can you confirm this @derick?
 
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