Certain appointments that are scheduled to occur on Saturdays (including December 31, 2011 and later Saturdays) disappear from Calendar in Outlook 2010. This behavior occurs after you install the update that is described in Microsoft Knowledge Base (KB) article 2633952. Specifically, the missing appointments use the Samoa time zone and that were created before you installed the update.
Note The update that is described in KB article 2633952 changes Samoa Standard Time from UTC -11:00 to UTC +13.
Note The update that is described in KB article 2633952 changes Samoa Standard Time from UTC -11:00 to UTC +13.