VMS Help RTL Routines, LIB$, LIB$DATE_TIME, Argument  *Conan The Librarian (sorry for the slow response - running on an old VAX)

 date-time-string

    OpenVMS usage:time_name
    type:         character string
    access:       write only
    mechanism:    by descriptor

    Destination string into which LIB$DATE_TIME writes the system
    date and time. The date-time-string argument is the address of a
    descriptor pointing to the destination string. This string is 23
    characters long; its format is as follows:

    dd-mmm-yyyy hh:mm:ss.hh

    See the OpenVMS Programming Concepts Manual for a description of
    system date and time operations as well as a detailed description
    of the format mnemonics used in these routines.