BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//hacksw/handcal//NONSGML v1.0//EN
BEGIN:VEVENT
DTSTAMP:20230727T094000Z
DTSTART:20230727T094000Z
DTEND:20230727T094000Z
SUMMARY:test
END:VEVENT
END:VCALENDAR