BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//time.you/holidays//NONSGML v1.0//EN
BEGIN:VEVENT
UID:f350a721-50c0-4590-9592-da86ec1d2e23
DTSTAMP:20260421T211154Z
DTSTART;VALUE=DATE:20271227
SUMMARY:Christmas Day (substitute day) (Guernsey)
END:VEVENT
END:VCALENDAR