I need to customize a cell based on the date it represents. Neither void UpdateVisualsForCell (TKCalendar calendar, TKCalendarCell cell) nor  TKCalendarCell ViewForCellOfKind (TKCalendar calendar, TKCalendarCellType cellType) allows me to do this. 

Ideally I would like to override a method similar to TKCalendarEvent[] EventsForDate (TKCalendar calendar, NSDate date) (something like TKCalendarCell ViewForCell (TKCalendar calendar, NSDate date)). Or is there some other way to do this?

Hello Martin,

You can use the calendar:updateVisualsFoCell: method in this case. The day cell has a property date, you can use this property to determine the date and customize it accordingly. The technique is demonstrated in this help article. You just need to change the condition with one based on the date property.

I hope this helps.
Regards,
Jack
Telerik