BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//uttek//Mail & Kalender//DE
CALSCALE:GREGORIAN
BEGIN:VEVENT
UID:d90bfa81dd7219a9@demo.example
DTSTAMP:20261102T113733Z
DTSTART:20261009T153000Z
DTEND:20261009T163000Z
SUMMARY:Wocheneinkauf
RRULE:FREQ=WEEKLY
END:VEVENT
END:VCALENDAR