Date field attribute not displaying correctly

Dear Sir
I entered date field as variable like VDate = Sys.argv[4] using arcpy.CalculateField_management("BLD_PG", "BLD_PG_DT", VDate, "PYTHON_9.3", "")
But in attribute table attribute of the Date field look like 12:01:00 AM. How to correct it?

Thanks

Padmasiri