I use Asp_Calendar Control to set Scheduler SelectedDate. In Edit or Insert Form if EndTime and StartTime do not change everything is ok and selected Date in e.Appointment.Start.Date and e.Appointment.End.Date is equal to Calendar and Scheduler selectedDate.
But when user changes startTime and endTime in Edit or Insert Form, e.Appointment.Start.Date and e.Appointment.End.Date are equal to first initialized scheduler selectedDate

Hi shahab,

 
I have tested the scenario in a sample web page but could not observe the unusual behavior. Here is the video of my test-please review it and let me know what else should I do in order to replicate it locally and be more helpful.

Regards,
Plamen
the Telerik team

I have a problem with selected date on SelectedDateCalendar:
http://www.telerik.com/community/forums/aspnet-ajax/scheduler/selected-time-on-scheduler-selecteddatecalendar.aspx
Therefor to solve this problem I used Asp:Calendar to set scheduler selectedDate.
1.Select for example 2 days later, For Exmaple today is 4-30-2013, select 5-02-2013
2. Now in InsertForm, Just in InsertForm, When I do not change startTime and EndTime everything is ok,
3. but in insertForm if I select different startTime or EndTime and change loaded Time e.Appointment.Start.Date and e.Appointment.End.Date are equal to first initialized scheduler selectedDate.
I use InlineInsertForm:

Notice I do not let user set Date on InsertForm:                
<DatePopupButton />

Hello shahab,

 
Here is my sample web page where the issue does not seems to appear. Please review it let me know if I am missing something.

Kind regards,
Plamen
the Telerik team