The date format (QDATFMT) is used for the default value for the DATFMT job attribute. QDATFMT is also used to determine the format in which a date can be specified on the initial program load (IPL) options prompt.
This system value can be:
You can change the date format to reflect the format in which months, days, and years are represented in your country or location. If you change this system value, the change takes effect for new jobs that enter the system after you make the change.