BEGIN:VCALENDAR
VERSION:2.0
BEGIN:VEVENT
CREATED:20161027T173727
DTSTAMP:20161027T173727
LAST-MODIFIED:20161027T173727
UID:aic4zm86mg
SUMMARY:alarm event
DTSTART;TZID=Europe/Berlin:20161020T000000
DTEND;TZID=Europe/Berlin:20161020T010000
BEGIN:VALARM
ACTION:AUDIO
TRIGGER:-PT15M
END:VALARM
END:VEVENT
END:VCALENDAR
