DAV property name: urn:schemas:calendar:rrule
The PidNameICalendarRecurrenceRule property ([MS-OXPROPS] section 2.448) gets or sets the rule for the pattern that defines a recurring appointment. The PidTagICalendarStartTime property (section 184.108.40.206) specifies the first instance of the appointment. The rule is based on the date and time of the first instance.
The PidNameICalendarRecurrenceRule property is combined with the following properties to specify the complete recurrence pattern: