When you create a recurring appointment in Microsoft Outlook, there is only one appointment item that represents all the occurrences of the appointment. This single appointment contains fields that specify details about how the appointment recurs. Note that when viewing your calendar, Outlook displays all the appointments as if they were separate items in the calendar.
By default, if you programmatically step through the items in the Calendar folder, only the first occurrence of a recurring appointment will be returned, since thatÆs the only item that actually exists. To retrieve all the appointments on the calendar, including the recurring appointments, use the IncludeRecurrences property. For information about retrieving or setting recurrence information, see the RecurrencePattern Object.