BEGIN:VCALENDAR
VERSION:2.0
PRODID:spatie/icalendar-generator
BEGIN:VTIMEZONE
TZID:UTC
BEGIN:STANDARD
DTSTART:20250909T161611
TZOFFSETFROM:+0000
TZOFFSETTO:+0000
END:STANDARD
END:VTIMEZONE
BEGIN:VEVENT
UID:6a2447cb654a1
DTSTAMP:20260606T161611Z
SUMMARY:Freisein
DTSTART:20270128T230000Z
DTEND:20270128T230000Z
END:VEVENT
END:VCALENDAR