The TIMFMT keyword allows the specification of an internal time format, and optionally the time separator, for any of these items of type Time: standalone field; data-structure subfield; prototyped parameter; or return value on a prototype or procedure-interface definition. This keyword will be automatically generated for an externally described data-structure subfield of type Time.
If TIMFMT is not specified, the Time field will have the time format and separator as specified by the TIMFMT keyword on the control specification, if present. If none is specified on the control specification, then it will have *ISO format.
See Table 36 for valid formats and separators. For more information on internal formats, see Internal and External Formats.