To create a new time zone definition, NYC, for New York, where the time is five hours earlier than Greenwich Mean Time (GMT), use the following syntax:

If you modify the 3-character name of a time zone in the TIMEZONE member, but fail to modify every job scheduling definition that uses that time zone in the same way, job scheduling definitions that specify that time zone become invalid. The same happens if you delete a time zone from the TIMEZONE member.

To activate changes in any time zone definition, do the following:

1. Use the NEWPARM command to refresh the time zone member used by the Control‑M monitor. For information on the procedure for using the NEWPARM command, see Dynamically Refreshing Control-M Parameters.
2. Log off TSO, and log on again.