I have attached a screenshot regarding this problem. Has anyone else experienced this incorrect layout? It seems that the date on the calendar grid is behind by one day. In my screenshot you will see that the DateTimePicker is showing "Tues March 11 2003" which is correct, but the calendar has that date placed in the Monday column. I compared it to the system tray calendar and it is definately wrong. Perhaps this is a leap year issue that Syncfusion forgot to put into account?