The "Today" button in the RadCalendar's month/year fast navigation popup is intended to take you to the current year+month. It does not select today's date.
I am not sure I fully understand what you are trying to achieve, however, here are two scenarios for you to consider:
Mark today's date in the picker's popping calendar, so that it is clearly visible:
<telerik:RadDatePicker ID="RadDatePicker1" runat="server">
<telerik:RadCalendarDay Repeatable="Today" Date="" ItemStyle-CssClass="rcToday
The rcToday class will use the Calendar's native today style for today's date. Note that rcToday is a CSS class introduced in Q3 2008 Beta. If you are using an older version of RadControls, please replace it with radCalToday_SkinName
Make today's date selected by default, using the SelectedDate
property (you can do this programmatically or declaratively with an expression: SelectedDate='<%# DateTime.Now %>' )
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