Returns

For each calendar specified in calid, the server returns the calendar's todos. If the todo has recurrences, it returns them as specified by the rid and mod parameters. See Recurring Components in Calendar Server WCAP

If the times specified in the rid parameter 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.