BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//time.you/holidays//NONSGML v1.0//EN
BEGIN:VEVENT
UID:54ad0dd2-e6b1-41a9-9685-5d7c8370a58d
DTSTAMP:20260421T150655Z
DTSTART;VALUE=DATE:20260506
SUMMARY:Substitute Holiday (Japan)
END:VEVENT
END:VCALENDAR