Hi Is the following legal? DTSTART:19980101T000000Z DTEND:19990101T000000Z So the event is one year long. Then RRULE:D1 19990101T000000Z So that should generate 365 events and at the last day of the year 1998 every event takes place. So the question is that can a recurrence start before the preceding event has finished? Rami Ojares Legosoft