VMS Help SET, TIME  *Conan The Librarian (sorry for the slow response - running on an old VAX)

    Resets the system clock, which is used as a timer to record
    intervals between various internal events and as a source clock
    for displaying the time of day.

    Requires both OPER (operator) and LOG_IO (logical I/O)
    privileges.

    Format

      SET TIME[=time]

1 - Parameter

 time

    Specifies a date in the format day-month-year, or a time in the
    format hour:minute:second.hundredth, or both. These fields accept
    the following values:

    Field      Type    Values

    Day        Integer 1 to 31
    Month      String  JAN, FEB, MAR, APR, MAY, JUN, JUL, AUG, SEP,
                       OCT, NOV, or DEC
    Year       Integer 1858 to 9999 - VAX only
    Year       Integer 1957 to 2056 - Alpha only
    Hour       Integer 0 to 23
    Minute     Integer 0 to 59
    Second     Integer 0 to 59
    Hundredth  Integer 0 to 99

    The hyphens (-),  colons (:), and period (.)  are required
    delimiters. Separate the date and time, when both are specified,
    with a colon. The syntax is sometimes specified as follows:

    [dd-mmm-yyyy[:]] [hh:mm:ss.cc]

    Alpha systems also allow a 2-digit year format:

    [dd-mmm-yy[:]] [hh:mm:ss.cc]

    The century applied to the 2-digit year format is determined by
    the corresponding year in the supported Alpha date range (1957-
    2056).

    If the explicit time value is not specified, the interval system
    clock is automatically reset according to the time-of-year clock.

    Note that the time-of-year clock is optional for some VAX
    processors. For further information about the time-of-year clock,
    refer to the hardware documentation for your computer.

                                   NOTE

       Alpha systems maintain system time during power failures
       and system down time. When a system is booted, if the time
       is known to be earlier than the time value of the last time
       modification, or greater than five years in the future, you
       are prompted to enter the time at the console prompt.

2 - Description

    Resets the system clock, which is used as a timer to record
    intervals between various internal events and as a source clock
    for displaying the time of day.

                                   NOTE

       The SET TIME command will not work if there is a time
       service available on your system or OpenVMS Cluster.

3 - Qualifier

 3.1 - /CLUSTER

    Requires OPER and LOG_IO privilege, and in an OpenVMS Cluster
    environment, SYSLCK privilege.

    Sets the time on all nodes in a cluster to the same system time.
    The format of the SET TIME /CLUSTER command is the following:

    Format

      SET TIME[=time] [/CLUSTER]

4 - Examples

    1.$ SET TIME=14-DEC-2001:19:31:0.0

      The SET TIME command in this example sets the date and time to
      December 14, 2001, 7:31 P.M.

    2.$ SET TIME
      $ SHOW TIME
      14-DEC-2001 03:21:27.53

      The SET TIME command in this example sets the system time
      according to the time-of-year clock. The SHOW TIME command
      requests a display of the current time.

    3.$ SET TIME=14-DEC-2001:15:31:0.0/CLUSTER

      This example sets the date and time to December 14, 2001, 3:31
      P.M. on all nodes in the cluster where the command was entered.