Commented Issue: Accessibility: Calendar: date selection (C): The calendar control cannot be manipulated using the keyboard as you cannot set focus on the calendar markup to select dates. [8205]

This may be ok since we allow the user to type the dates into the textbox
Comments: Under WCAG 2.0 guideline 2.1.1, all functionality on the page must be accessible via keyboard. If keyboard support was included in the Ajax calendar control, any developers using the control could claim conformance if the Ajax control.