Date/DateTime/Time pickers need to have a mask automaticly for the date format entered currently users need to type the "/" instead of a mask "__/__/____"  like in telerik ajax. 
I know there is this link 

http://docs.telerik.com/kendo-ui/aspnet-mvc/helpers/datepicker/how-to/masked-date-picker-grid

With a solution but this is a workaround and not a built in solution supported by telerik.