Drag&drop event from an external source

The destination date and time depend on where you drop the object (on both axes). The basic behavior is that no restrictions apply (it goes exactly where you drop it). If you need special behavior you will probably need to implement it yourself using the source code (the time limitation you describe can't be applied to all possible views automatically).

You can intercept it by handling EventMove event on the client side by switching EventMoveHandling="JavaScript".

This event is executed when the event box is dropped somewhere and you can detect the external source by checking "external" variable.

An example can be found in Demo/Calendar/ExternalDragDrop.aspx.

But you will probably need to load it on the server side using the primary key of the event (there is not much to do with the event in the EventMove handler on the client side).