VMS Help System Services, $NUMUTC, Arguments  *Conan The Librarian (sorry for the slow response - running on an old VAX)

 timbuf

    OpenVMS usage:vector_word_unsigned
    type:         word
    access:       write only
    mechanism:    by 32- or 64-bit reference (Alpha)
    mechanism:    by 32-bit reference (VAX)
    Buffer into which $NUMUTC writes the converted date and time. The
    timbuf argument is the 32-bit address (on VAX systems) or the 32-
    or 64-bit address (on Alpha systems) of a 13-word structure
    containing time, inaccuracy of time, and time differential
    factor. The time differential factor encoded in the 128-bit
    buffer is used to convert the UTC to its numerical components.
    Negative values in the inaccuracy field indicate an infinite
    inaccuracy.

    Refer to the OpenVMS System Services Reference Manual to view the
    diagram of the fields in this structure.

 utcadr

    OpenVMS usage:coordinated universal time
    type:         utc_date_time
    access:       read only
    mechanism:    by 32- or 64-bit reference (Alpha)
    mechanism:    by 32-bit reference (VAX)
    The 128-bit UTC time value to be converted.

    The utcadr argument is optional; if it is not used, $NUMUTC will
    use the current time.