Prevent Time Getting Reset to 12:00 AM Midnight in RadDateTimePicker
When a date is selected in the picker control, the time will be automatically set to 12:00 AM midnight. It may happen that even when the user selects a time slot explicitly from the timeview pop-up, the time still to be set and remain at 12:00 AM.
This issue indicates that probably the following property is defined and upon removing it, the problem should be resolved:
<telerik:RadDateTimePicker ...> <DateInput ... DateFormat="M/d/yy">
You can also check the following article addressing a related subject: