[Tickets #12773] Re: Thunderbird lightning caldav serial event time failure with summer/wintertime change

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Ticket URL: http://bugs.horde.org/ticket/12773
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  Ticket             | 12773
  Updated By         | Michael Rubinsky <mrubinsk at horde.org>
  Summary            | Thunderbird lightning caldav serial event time failure
                     | with summer/wintertime change
  Queue              | Kronolith
  Version            | 4.1.3
  Type               | Bug
  State              | Feedback
  Priority           | 1. Low
  Milestone          |
  Patch              |
  Owners             |
------------------------------------------------------------------------------


Michael Rubinsky <mrubinsk at horde.org> (2014-02-06 14:13) wrote:

> Hi Michael , whatever the reason is, it need to be fixed, cause its  
> a real showstopper for using Horde with Thunderbird Lightning. There  
> is a ticket at Mozilla about it too, so what can be done to get this  
> fixed.

Well, first of all, the sample ics files you posted below are not  
complete. The first one is missing the full vTIMEZONE component.  
Second of all, if I import a complete ics file, with the proper  
components, and then export it, I get the correct time values. The  
following is a kronolith export of the event described by your sample  
ics file:

BEGIN:VCALENDAR
VERSION:2.0
X-WR-CALNAME:Yopopipip
PRODID:-//The Horde Project//Horde iCalendar Library//EN
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20131021T140000
DTEND;TZID=Europe/Berlin:20131021T150000
DTSTAMP:20140206T140923Z
UID:6824a851-a5c8-4b1c-aa66-5da72756d071
CREATED:20140206T140716Z
LAST-MODIFIED:20140206T140716Z
SUMMARY:Mo-14-15
DESCRIPTION:Mo-14-15
CLASS:PUBLIC
STATUS:CONFIRMED
TRANSP:OPAQUE
RRULE:FREQ=WEEKLY;INTERVAL=1;BYDAY=MO
END:VEVENT
BEGIN:VTIMEZONE
TZID:Europe/Berlin
BEGIN:DAYLIGHT
TZOFFSETFROM:+0100
TZOFFSETTO:+0200
DTSTART:19160430T230000
TZNAME:CEST
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:+0200
TZOFFSETTO:+0100
DTSTART:19161001T010000
TZNAME:CE-T
END:STANDARD
BEGIN:DAYLIGHT
TZOFFSETFROM:+0100
TZOFFSETTO:+0200
DTSTART:19170416T020000
RRULE:FREQ=YEARLY;BYMONTH=4;BYMONTHDAY=15,16,17,18,19,20,21;BYDAY=1MO;UNTIL
  =19180421T00000Z
TZNAME:CEST
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:+0200
TZOFFSETTO:+0100
DTSTART:19170917T020000
RRULE:FREQ=YEARLY;BYMONTH=9;BYMONTHDAY=15,16,17,18,19,20,21;BYDAY=1MO;UNTIL
  =19180915T00000Z
TZNAME:CE-T
END:STANDARD
BEGIN:DAYLIGHT
TZOFFSETFROM:+0100
TZOFFSETTO:+0200
DTSTART:19400401T020000
TZNAME:CEST
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:+0200
TZOFFSETTO:+0100
DTSTART:19421102T020000
TZNAME:CE-T
END:STANDARD
BEGIN:DAYLIGHT
TZOFFSETFROM:+0100
TZOFFSETTO:+0200
DTSTART:19430329T020000
TZNAME:CEST
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:+0200
TZOFFSETTO:+0100
DTSTART:19431004T020000
TZNAME:CE-T
END:STANDARD
BEGIN:DAYLIGHT
TZOFFSETFROM:+0100
TZOFFSETTO:+0200
DTSTART:19440403T020000
RRULE:FREQ=YEARLY;BYMONTH=4;BYDAY=1MO;UNTIL=19450401T01000Z
TZNAME:CEST
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:+0200
TZOFFSETTO:+0100
DTSTART:19441002T020000
TZNAME:CE-T
END:STANDARD
BEGIN:STANDARD
TZOFFSETFROM:+0100
TZOFFSETTO:+0100
DTSTART:19450916T020000
TZNAME:CE-T
END:STANDARD
BEGIN:DAYLIGHT
TZOFFSETFROM:+0100
TZOFFSETTO:+0300
DTSTART:19450524T020000
TZNAME:CEMT
END:DAYLIGHT
BEGIN:DAYLIGHT
TZOFFSETFROM:+0300
TZOFFSETTO:+0200
DTSTART:19450924T030000
TZNAME:CEST
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:+0200
TZOFFSETTO:+0100
DTSTART:19451118T020000
TZNAME:CE-T
END:STANDARD
BEGIN:DAYLIGHT
TZOFFSETFROM:+0100
TZOFFSETTO:+0200
DTSTART:19460414T020000
TZNAME:CEST
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:+0200
TZOFFSETTO:+0100
DTSTART:19461007T020000
TZNAME:CE-T
END:STANDARD
BEGIN:STANDARD
TZOFFSETFROM:+0100
TZOFFSETTO:+0100
DTSTART:19471005T020000
RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=1SU;UNTIL=19491002T01000Z
TZNAME:CE-T
END:STANDARD
BEGIN:DAYLIGHT
TZOFFSETFROM:+0100
TZOFFSETTO:+0200
DTSTART:19470406T030000
TZNAME:CEST
END:DAYLIGHT
BEGIN:DAYLIGHT
TZOFFSETFROM:+0200
TZOFFSETTO:+0300
DTSTART:19470511T020000
TZNAME:CEMT
END:DAYLIGHT
BEGIN:DAYLIGHT
TZOFFSETFROM:+0300
TZOFFSETTO:+0200
DTSTART:19470629T030000
TZNAME:CEST
END:DAYLIGHT
BEGIN:DAYLIGHT
TZOFFSETFROM:+0200
TZOFFSETTO:+0200
DTSTART:19480418T020000
TZNAME:CEST
END:DAYLIGHT
BEGIN:DAYLIGHT
TZOFFSETFROM:+0200
TZOFFSETTO:+0200
DTSTART:19490410T020000
TZNAME:CEST
END:DAYLIGHT
BEGIN:DAYLIGHT
TZOFFSETFROM:+0100
TZOFFSETTO:+0200
DTSTART:19800406T010000
RRULE:FREQ=YEARLY;BYMONTH=4;BYDAY=1SU;UNTIL=19800406T00000Z
TZNAME:CEST
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:+0200
TZOFFSETTO:+0100
DTSTART:19800928T010000
RRULE:FREQ=YEARLY;BYDAY=-1SU;BYMONTH=9;UNTIL=19950923T23000Z
TZNAME:CE-T
END:STANDARD
BEGIN:DAYLIGHT
TZOFFSETFROM:+0100
TZOFFSETTO:+0200
DTSTART:19810329T010000
RRULE:FREQ=YEARLY;BYDAY=-1SU;BYMONTH=3
TZNAME:CEST
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:+0200
TZOFFSETTO:+0100
DTSTART:19961027T010000
RRULE:FREQ=YEARLY;BYDAY=-1SU;BYMONTH=10
TZNAME:CE-T
END:STANDARD
END:VTIMEZONE
END:VCALENDAR