Returns

For each calendar specified in calid, the server returns the calendar's the events and todos that changed during the range specified by dtstart and dtend.

If the times specified in the dtstart and dtend parameters is not Zulu time, the system uses the time zone specified in the tzid parameter to translate the times into Zulu time for data retrieval. If the tzid parameter is missing, the system uses the server’s default time zone.

The system uses the tzidout parameter to determine what time zone to translate retrieved data into before returning it. If the tzidout parameter is missing, the system returns the data in Zulu time.

If neither the starting nor ending date-time is specified, the server returns all events and todos that have changed, up to the specified maximum.