There is no such button in the RadDateTimePicker control. If you need this feature you need to add this button yourself and set the SelectedValue of the DateTimerPicker control to the current one.
All the best,
the Telerik team
Registration for Q1 2011 What’s New Webinar Week is now open. Mark your calendar for the week starting March 21st and book your seat
for a walk through all the exciting stuff we ship with the new release!