BEGIN:VCALENDAR
BEGIN:VTIMEZONE
TZID:Europe/London
BEGIN:DAYLIGHT
TZOFFSETFROM:+0000
RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU
DTSTART:19810329T010000
TZNAME:BST
TZOFFSETTO:+0100
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:+0100
RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
DTSTART:19961027T020000
TZNAME:GMT
TZOFFSETTO:+0000
END:STANDARD
END:VTIMEZONE
VERSION:2.0
PRODID:-//BoxStuff//CRM 1.0.0//EN
CALSCALE:Gregorian
BEGIN:VEVENT
DTSTART;TZID=Europe/London:20250510
DTEND;TZID=Europe/London:20250511
DESCRIPTION:bd
DTSTAMP;TZID=Europe/London:20250121T132336
CREATED;TZID=Europe/London:20250121T132336
LAST_MODIFIED;TZID=Europe/London:20250123T043257
SUMMARY:Birthday Function
UID:413feb9a-95cd-4aba-b8fb-c32421229573
END:VEVENT
END:VCALENDAR