Bug #77741 [Opn]: DateTimeZone/setTimezone returns wrong values

Edit report at https://bugs.php.net/bug.php?id=77741&edit=1 ID: 77741 Updated by: girgias@php.net Reported by: info at akebono dot nl Summary: DateTimeZone/setTimezone returns wrong values Status: Open Type: Bug Package: Date/time related Operating System: Windows 10 PHP Version: 7.2.16 -Assigned To: +Assigned To: derick Block user comment: N Private report: N New Comment: 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? Previous Comments: ------------------------------------------------------------------------ [2019-03-14 12:32:09] 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 ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=77741&edit=1