VMS Help ACCOUNTING, /SINCE, Description  *Conan The Librarian (sorry for the slow response - running on an old VAX)

    All records in an accounting file are time-stamped with the time
    the record was logged in the file.

    The /SINCE qualifier selects only the records time-stamped on or
    after the specified time. You can specify an absolute time, delta
    time, or a combination of the two. If you omit the time, 00:00
    hours on the current day is used.

    See also the /BEFORE qualifier, which selects records time-
    stamped before a specified time.