BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Calendar//Calendar Event//EN
CALSCALE:GREGORIAN
METHOD:PUBLISH
BEGIN:VEVENT
UID: 2573
DTSTART;TZID=GMT Standard Time:20251225T000000
DTEND;TZID=GMT Standard Time:20251225T235900
SUMMARY:CHRISTMAS DAY
END:VEVENT
END:VCALENDAR