Knowledgebase: iPad/iPhone/iPod touch
Some monthly and yearly recurring event patterns not supported on iPhone
Posted by - NA - on 30 June 2009 04:34 PM
A recurring series can be created in Outlook for events that occur on the first weekday, first weekend day, or first day of the month or year.  These patterns are not supported on the iPhone/iPod touch/iPad. 
The result is, the events show up on the device calendar, but not in the expected pattern.