BEGIN:VCALENDAR
VERSION:2.0
PRODID:spatie/icalendar-generator
BEGIN:VTIMEZONE
TZID:UTC
BEGIN:STANDARD
DTSTART:20250723T183429
TZOFFSETFROM:+0000
TZOFFSETTO:+0000
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BEGIN:VEVENT
UID:69e520351509f
DTSTAMP:20260419T183429Z
SUMMARY:Leonardo da Vinci – Erfindungen erleben
DTSTART:20270101T100000Z
DTEND:20270101T100000Z
END:VEVENT
END:VCALENDAR