When a date is displayed in an IST message for VTAM® network operators, the format of the date value is based on the DATEFORM start option. See the information about the DATEFORM start option in z/OS Communications Server: SNA Resource Definition Reference.
When a time is issued in a message, the time value is expressed in 24-hour system (hh:mm:ss). For example, 1:00 p.m. is displayed as 13:00:00.