Fri, 10 Apr 2026 09:21:04 +0000 https://bugs.horde.org/ticket/12428 ambiguous time zone in events created by Horde Events created in Horde have an ambiguous time zone. Horde creates date times like: DTSTART;TZID=Europe/Athens:20111117T200000Z DTEND;TZID=Europe/Athens:20111117T204501Z The "Z" at the end means "UTC". If a TZID is present you must not append the "Z". So is should read as DTSTART;TZID=Europe/Athens:20111117T200000 DTEND;TZID=Europe/Athens:20111117T204501 Please check out: http://tools.ietf.org/html/rfc5545#section-3.3.5 (FORM #3) Thu, 04 Jul 2013 13:15:56 +0000 https://bugs.horde.org/ticket/12428#t79137