BEGIN:VCALENDAR
VERSION:2.0
PRODID:spatie/icalendar-generator
BEGIN:VTIMEZONE
TZID:UTC
BEGIN:STANDARD
DTSTART:20251205T184151
TZOFFSETFROM:+0000
TZOFFSETTO:+0000
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BEGIN:VEVENT
UID:6a971c6f97901
DTSTAMP:20260901T184151Z
SUMMARY:Hayato Sumino
DTSTART:20270110T190000Z
DTEND:20270110T190000Z
END:VEVENT
END:VCALENDAR