BEGIN:VCALENDAR
VERSION:2.0
PRODID:Bierschinken Eventkalender
METHOD:PUBLISH
BEGIN:VEVENT
UID:56682-sommerfest@bierschinken.net
TZID:Europe/Berlin
LOCATION:VeB\, Willy-Brandt-Allee 9\, 23554  Lübeck
SUMMARY:Sommerfest in Lübeck
DESCRIPTION:http://www.bierschinken.net/event/56682-sommerfest

Es wird toll... 
CLASS:PUBLIC
DTSTART;VALUE=DATE:20170909
DTEND;VALUE=DATE:20170910
DTSTAMP:20210724T114700
GEO:53.869911\;10.67725
END:VEVENT
END:VCALENDAR