Generating time stamps

This is how NFS generates atime, mtime and ctime values for non-system-managed PS and DA data sets from the MVS dates:

atime = mtime = ctime = reference_date + time_increment

If the reference_date value is zero (that is, the file has not yet been referenced):

atime = mtime = ctime = creation_date + time_increment

The time_increment value is either the server local time or 23:59 hours. If reference_date value or creation_date value is equal to the server local date, the server local time is added. Otherwise, a fixed value of 23 hours and 59 minutes is added.