BEGIN:VCALENDAR
VERSION:2.0
CALSCALE:GREGORIAN
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20190910T091500
DTEND;TZID=Europe/Berlin:20190911T160000
SUMMARY:out of office day in Liberec (CZ)
DESCRIPTION:Come out of your booth!
END:VEVENT
END:VCALENDAR