BEGIN:VCALENDAR
VERSION:2.0
PRODID:spatie/icalendar-generator
BEGIN:VEVENT
UID:6aaa68811e28e
DTSTAMP:20260313T135319Z
SUMMARY:classXXX
X-MICROSOFT-CDO-ALLDAYEVENT:TRUE
DTSTART;VALUE=DATE:20100115
END:VEVENT
END:VCALENDAR