Abstract: A synchronization window for synchronizing data for a calendar in a client calendar data store on a calendar data client computer system with data for the calendar in a server calendar data store on a calendar data server computer system can be calculated using a current time. A request for synchronization data for calendar items for the calendar with calendar times that are within the synchronization window can be sent to the calendar data server. One or more responses to the request can be received from the calendar data server. The response(s) can include received records for calendar items that are at least partially within the synchronization window. The received records can include a master record of a recurring calendar item and an instance record of an occurrence of the recurring calendar item. The received records for the calendar items can be incorporated in the client calendar data store.

Abstract: Calendar repair may be provided. Calendar events, such as appointments and meetings, may be created and copied to a plurality of attendee calendars. A first copy of the event may be compared to a second copy of the event, and an event property of the second event may be updated to match a corresponding event property of the first event.

Abstract: A synchronization window for synchronizing data for a calendar in a client calendar data store on a calendar data client computer system with data for the calendar in a server calendar data store on a calendar data server computer system can be calculated using a current time. A request for synchronization data for calendar items for the calendar with calendar times that are within the synchronization window can be sent to the calendar data server. One or more responses to the request can be received from the calendar data server. The response(s) can include received records for calendar items that are at least partially within the synchronization window. The received records can include a master record of a recurring calendar item and an instance record of an occurrence of the recurring calendar item. The received records for the calendar items can be incorporated in the client calendar data store.

Abstract: Various techniques of time zone conversion are disclosed in this application. For example, in one embodiment, a computing device can include a synchronizer configured to receive a set of time zone rules from a server. The set of time zone rules individually including a time zone identifier, a start date, and a time offset from a standard time beginning from the start date. The computing device can also include a converter operatively coupled to the synchronizer. The converter is configured to selectively convert time zone sensitive data received at or stored on the computing device to a target time zone based on the set of time zone rules.

Abstract: Calendar repair using a standard message may be provided. Calendar events, such as appointments and meetings, may be created and copied to a plurality of attendee calendars. A first copy of the event may be compared to a second copy of the event to determine whether properties between the events are out-of-sync. If so, a standard meeting request message comprising the correct value may be sent to update the out-of-sync property.

Abstract: Calendar repair may be provided. Calendar events, such as appointments and meetings, may be created and copied to a plurality of attendee calendars. A first copy of the event may be compared to a second copy of the event, and an event property of the second event may be updated to match a corresponding event property of the first event.

Abstract: Calendar repair may be provided. Calendar events, such as appointments and meetings, may be created and copied to a plurality of attendee calendars. A first copy of the event may be compared to a second copy of the event, and an event property of the second event may be updated to match a corresponding event property of the first event.

Abstract: Calendar repair using a standard message may be provided. Calendar events, such as appointments and meetings, may be created and copied to a plurality of attendee calendars. A first copy of the event may be compared to a second copy of the event to determine whether properties between the events are out-of-sync. If so, a standard meeting request message comprising the correct value may be sent to update the out-of-sync property.