The more appointments you add to the AppointmentsSource, the poorer the performance of the Calendar is. 

This can be observed when switching months in month view. In case you have a huge amount of appointments, switching the months takes time. The issue is specifically obvious when a single month contains lots of appointments(600 for example). However, it is present when you are switching months that do not have any appointments at all as well.

Available in minor release 2017.3.927. It will also be available in the R3 2017 SP release.

Available in minor release 2017.3.927. It will also be available in the R3 2017 SP release.

It would be nice to see the current displayed year in the Header while displaying the RadCalendar in 'MonthName' CalendarViewMode.

Currently MonthNames view is available only in iOS

Add a property for setting the start day of the week.

Please expose a collection of Day objects for the currently visible days in the Calendar's view.  Potentially in a RadCalendar.VisibleDays property.

This would be needed to get the trailing and leading days of the previous and next month. For example, see the attached screenshot.

Available in minor release 2017.2.0818. It will also be available in the R3 2017 release.

On Android and iOS the currently selected date can be reset by setting RadCalendar's SelectedDate property to null. The currently selected date gets deselected in the GUI and, most importantly, the "CalendarOnSelectionChanged" event can be raised again when the same date gets selected again in the GUI right afterwards. This is not the case on the UWP. The selected date does not get deselected and the CalendarOnSelectionChanged does not get raised when the same date gets selected again in the GUI. We tested it using the Telerik_UI_for_Xamarin_2017_1_1220_4_Dev build.

See attached file for more details.

Available in minor release 2017.2.0721. It will also be available in the R3 2017 release.

If calendar is placed in a grid row and later its rowspan is increased, the calendar does not update its size.