My objective is - at loading an aspx page (not postback) - to display one month of my choose, and not the current month that is displayed by default. I think that this is possible, but I can't find out how to do it.
Set the FocusedDate property of RadCalendar to desired date in order to show that monthview instead of current month. The FocusedDate property specifies the date that has focus. By default, RadCalendar uses the current date as the focused date. See the example.