If you have date, time, and timestamp fields in program-described files, then you must specify their external format. You can specify a default external format for all date, time, and timestamp fields in a program-described file by using the DATFMT and TIMFMT keywords on a file description specification. You can specify an external format for a particular field as well. Specify the desired format in positions 31-34 on an input specification. Specify the appropriate keyword and format in positions 53-80 on an output specification.
For more information on each format type, see the appropriate section in the remainder of this chapter.