[Tickets #12843] Re: Wrong timezone calculation with CalDAV

[noreply at bugs.horde.org]

DO NOT REPLY TO THIS MESSAGE. THIS EMAIL ADDRESS IS NOT MONITORED.

Ticket URL: http://bugs.horde.org/ticket/12843
------------------------------------------------------------------------------
  Ticket             | 12843
  Updated By         | nicolas at deffayet.com
  Summary            | Wrong timezone calculation with CalDAV
  Queue              | Kronolith
  Version            | 4.1.4
  Type               | Bug
  State              | Feedback
  Priority           | 1. Low
  Milestone          |
  Patch              |
  Owners             |
------------------------------------------------------------------------------


nicolas at deffayet.com (2013-11-20 23:49) wrote:

> Are you sure that the Note has the native Google Calendar app  
> installed? AFAIK all Samsung devices with Android 4.1 have Samsung's  
> S-Planner app instead.
> Anyway, I tried both S-Planner on a Samsung device, and importing  
> your ics file directly. Both work perfectly fine with the correct  
> time.

Problem seem to be located on Horde, i have tried to import the ICS  
file provided in this ticket in Horde (thanks for the tips to test  
this) and Horde show wrong time in Web Interface and show wrong time  
in ICS exported from Web Interface.

If you try to import the ICS in Horde:

My Calendars [edit] -> Import
  Import ICS file

You will see:

Event title: CalDAV-Sync Test Event
 From 11/19/2013 17:00 to 11/19/2013 17:59 Timezone: Europe/Berlin

For reminder, the event is 18:00 CET to 19:00 CET.

Now, if we compare the ICS format of the this event:

Imported ICS file to Horde:
DTSTART;TZID=Europe/Berlin:20131119T180000
DTEND;TZID=Europe/Berlin:20131119T190000

Exported ICS file from Horde:
DTSTART:20131119T160000Z
DTEND:20131119T170000Z

This is wrong, as Horde should have & export:
DTSTART:20131119T170000Z
DTEND:20131119T180000Z

I have tested timezone convertion in php (DateTime/ DateTimeZone with  
the exemple  
http://stackoverflow.com/questions/2505681/timezone-conversion-in-php)  
and this works file, so php is not faulty on Horde server.

Thanks