BEGIN:VCALENDAR
VERSION:2.0
PRODID:spatie/icalendar-generator
BEGIN:VTIMEZONE
TZID:UTC
BEGIN:STANDARD
DTSTART:20260121T215439
TZOFFSETFROM:+0000
TZOFFSETTO:+0000
END:STANDARD
END:VTIMEZONE
BEGIN:VEVENT
UID:6ad5401f9a964
DTSTAMP:20261018T215439Z
SUMMARY:Istanbul
DTSTART:20270506T170000Z
DTEND:20270506T170000Z
END:VEVENT
END:VCALENDAR