By default Calendar control shows dates of current month. For some tasks you may need to show another month by default. You can do it from code behind in one string.

To show not current month in Calendar control you can with its property "VisibleDate". For example,

      calendarCtrl.VisibleDate = DateTime.Parse("2015-06-14");

If you place this code, for example, to "Page_Load", then your Calendar control will show you July 2015.