TIMFMT(fmt{separator})
The TIMFMT keyword specifies the internal time format for time literals and the default internal format for time fields within the program. You can specify a different internal time format for a particular field by specifying the format with the TIMFMT keyword on the definition specification for that field.
The default time format for definitions can be temporarily changed using the /SET and /RESTORE directives. See /SET.
If the TIMFMT keyword is not specified the *ISO format is assumed. For more information on internal formats, see Internal and External Formats.
Table 1 shows the time formats supported and their separators.