timbuf

    OpenVMS usage:time_name
    type:         character-coded text string
    access:       read only
    mechanism:    by 32- or 64-bit descriptor-fixed-length string
                  descriptor
    Buffer that holds the ASCII time to be converted. The timbuf
    argument specifies the 32- or 64-bit address of a character
    string descriptor pointing to a local time string. The time
    string specifies the absolute time to be converted by $BINUTC.

 utcadr

    OpenVMS usage:coordinated universal time
    type:         utc_date_time
    access:       write only
    mechanism:    by 32- or 64-bit reference
    Time value that $BINUTC has converted. The utcadr argument is
    the 32- or 64-bit address of a 16-byte location to receive the
    converted time.