[horde] ActiveSync -> CalDAV Timezone quirk

[Steffen]

On Mon, 14 Mar 2016, Steffen wrote:

> with
> Horde_ActiveSync             2.31.6  stable
> kronolith                    4.2.15  stable
>
> when I create an event with Android ActiveSync, I get an entry with 
> event_timezone = 'CET' in the database; the GUI and ActiveSync display the 
> event correctly. But when downloaded by CalDAV I get this:

I forgot to mention, the event is to start at 15:00 with timezone CET /
Europe/Verlin . The database contains: event_start = 2016-03-08 14:00:00 .
So this is correct, but the timezone of the CalDAV response should either
say UTC or Europe/Berlin, IMHO.

> BEGIN:VCALENDAR
> VERSION:2.0
> X-WR-CALNAME:Calendar of dvtest1
> PRODID:-//The Horde Project//Horde iCalendar Library//EN
> BEGIN:VEVENT
> DTSTART;TZID=CET:20160308T150000
> DTEND;TZID=CET:20160308T153000
> DTSTAMP:20160314T123714Z
> UID:20160314132443.4C_Xp8mUFWBF6GsNZi0nVRb at ...
> CREATED:20160314T122443Z
> LAST-MODIFIED:20160314T122443Z
> SUMMARY:B15:00
> CLASS:PUBLIC
> STATUS:CONFIRMED
> TRANSP:OPAQUE
> BEGIN:VALARM
> ACTION:DISPLAY
> DESCRIPTION:B15:00
> TRIGGER;VALUE=DURATION:-PT15M
> END:VALARM
> END:VEVENT
> BEGIN:VTIMEZONE
> TZID:CET
> END:VTIMEZONE
> END:VCALENDAR
>
> My client is totally confused by the timezone CET. If I replace the string 
> CET by "Europe/Berlin" in the database, I get the correct date in the CalDAV 
> client, too, and a lot more entries in VTIMEZONE.

> The user has Europe/Berlin as default timezone, as does PHP.
>
> Is this some configuration error?
> If I remember correctly, ActiveSync storred UTC as timezone, didn't it?
>
>

-- 
Steffen