USAGE For a Class Date-Time Item

If no USAGE clause is specified for an item of class date-time, USAGE DISPLAY is assumed. A USAGE of DISPLAY or PACKED-DECIMAL (COMP-3) can be explicitly specified for a date-time item. A USAGE of PACKED-DECIMAL can be specified for an item of class date-time, if literal-2 contains only conversion specifiers, and those specifiers will result in numeric digits.