BEGIN:VCALENDAR
PRODID:-//event//iCal4j 1.0//EN
CALSCALE:GREGORIAN
BEGIN:VEVENT
DTSTAMP:20260406T051851Z
DTSTART:20251224T060100Z
DTEND:20251226T055900Z
SUMMARY:christmas-holiday
LOCATION:    
END:VEVENT
END:VCALENDAR