BEGIN:VCALENDAR
VERSION:2.0
PRODID:spatie/icalendar-generator
BEGIN:VTIMEZONE
TZID:UTC
BEGIN:STANDARD
DTSTART:20250825T213511
TZOFFSETFROM:+0000
TZOFFSETTO:+0000
END:STANDARD
END:VTIMEZONE
BEGIN:VEVENT
UID:6a10cc0f23d9b
DTSTAMP:20260522T213511Z
SUMMARY:Unsere Klasse
DTSTART:20260603T180000Z
DTEND:20260603T180000Z
END:VEVENT
END:VCALENDAR