BEGIN:VCALENDAR
VERSION:2.0
PRODID:spatie/icalendar-generator
BEGIN:VTIMEZONE
TZID:UTC
BEGIN:STANDARD
DTSTART:20250929T194202
TZOFFSETFROM:+0000
TZOFFSETTO:+0000
END:STANDARD
END:VTIMEZONE
BEGIN:VEVENT
UID:6a3ed60a2d69c
DTSTAMP:20260626T194202Z
SUMMARY:Hayato Sumino
DTSTART:20270110T190000Z
DTEND:20270110T190000Z
END:VEVENT
END:VCALENDAR