BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//OSM Calendar
BEGIN:VEVENT
SUMMARY:TNEI Mapathon 2026
DTSTART:20261005T170000Z
DTEND:20261005T190000Z
DTSTAMP:20261005T170000Z
UID:OSMCAL-5240
END:VEVENT
END:VCALENDAR