BEGIN:VCALENDAR
VERSION:2.0
METHOD:PUBLISH
BEGIN:VTIMEZONE
TZID:Amsterdam, Berlin, Bern, Rome, Stockholm, Vienna
BEGIN:STANDARD
RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU
DTSTART:19810329T020000
END:STANDARD
BEGIN:DAYLIGHT
RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU
DTSTART:19810329T020000
END:DAYLIGHT
END:VTIMEZONE
END:VCALENDAR