Fix the displayed job creation time

The milliseconds appeared after the time zone:  "10:50:47 A.M. CDT.411"
instead of "10:50:47.411 A.M. CDT".

Force 24-hour format, since it is more convenient for comparing timestamps
near noon.
1 job for release/21.08 in 4 minutes and 35 seconds (queued for 8 seconds)