BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//time.you/holidays//NONSGML v1.0//EN
BEGIN:VEVENT
UID:5e98e3bd-ee4d-4825-a58d-9acecb0f8f78
DTSTAMP:20260421T132903Z
DTSTART;VALUE=DATE:20261226
SUMMARY:1st Octave (Portugal)
END:VEVENT
END:VCALENDAR