BEGIN:VCALENDAR VERSION:2.0 PRODID:-//PIMUTILS.ORG//NONSGML khal / icalendar //EN BEGIN:VEVENT UID:event_rrule_recurrence_id SUMMARY:Arbeit RRULE:FREQ=WEEKLY;UNTIL=20140806T060000Z DTSTART;TZID=foo:20140630T070000 DTEND;TZID=foo:20140630T120000 END:VEVENT BEGIN:VEVENT UID:event_rrule_recurrence_id SUMMARY:Arbeit RECURRENCE-ID;TZID=foo:20140707T070000 DTSTART;TZID=foo:20140707T090000 DTEND;TZID=foo:20140707T140000 END:VEVENT END:VCALENDAR