Hello,

i have the following problem:

i create a calendar entry - for example 8 to 10 am (UTC+1)

it is shown right in webinterface and in MAPI (emClient). the same calendar is used as internet calendar (shared cal) in outlook. and there the times are wrong. here it is not 8 to 10 - it is shown from 10 to 12.

emclient:

webinterface:

oulook (shared webcal):

i downloaded the ics-file. here is the entry:

BEGIN:VEVENT
CLASS:PUBLIC
CREATED:20240404T092800Z
DESCRIPTION:
DTEND;TZID=Europe/Berlin:20240512T100000
DTSTAMP:20240404T092800Z
DTSTART;TZID=Europe/Berlin:20240512T080000
LAST-MODIFIED:20240404T092800Z
LOCATION:
ORGANIZER;CN=xxxxxxxx:MAILTO:xxxxxxxxxxxxxx
PRIORITY:5
SEQUENCE:0
SUMMARY:Test
TRANSP:TRANSPARENT
UID:xxxxxxxxxxxxxxxxxxxxxxxxxxxxx
X-MICROSOFT-CDO-ALLDAYEVENT:FALSE
X-MICROSOFT-CDO-BUSYSTATUS:FREE
END:VEVENT

Also interesting is, that at the end of the ics-file are TWO Timezone entries:

BEGIN:VTIMEZONE
TZID:Europe/Berlin
X-LIC-LOCATION:Europe/Berlin
BEGIN:STANDARD
DTSTART:20221030T030000
RRULE:FREQ=YEARLY;BYDAY=-1SU;BYMONTH=10
TZNAME:CET
TZOFFSETFROM:+0200
TZOFFSETTO:+0100
END:STANDARD
BEGIN:DAYLIGHT
DTSTART:20220327T040000
RRULE:FREQ=YEARLY;BYDAY=4SU;BYMONTH=3
TZNAME:CEST
TZOFFSETFROM:+0100
TZOFFSETTO:+0000
END:DAYLIGHT
END:VTIMEZONE

BEGIN:VTIMEZONE
TZID:W. Europe Standard Time
X-LIC-LOCATION:Europe/Berlin
BEGIN:STANDARD
DTSTART:20221030T030000
RRULE:FREQ=YEARLY;BYDAY=-1SU;BYMONTH=10
TZNAME:CET
TZOFFSETFROM:+0200
TZOFFSETTO:+0100
END:STANDARD
BEGIN:DAYLIGHT
DTSTART:20230326T020000
RRULE:FREQ=YEARLY;BYDAY=4SU;BYMONTH=3
TZNAME:CEST
TZOFFSETFROM:+0100
TZOFFSETTO:+0200
END:DAYLIGHT
END:VTIMEZONE

All entries created before Feb. 22, 2024 are shown right. All entries created after are shown wrong in the shared calendar.

Any ideas?

Thank you

Rudolf