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

       /SINCE[=time]

    Selects only those files dated after the specified time. You
    can specify time as an absolute time, a combination of absolute
    and delta times, or as one of the following keywords: TODAY
    (default), TOMORROW, or YESTERDAY. Specify one of the following
    qualifiers with /BEFORE to indicate the time attribute to be
    used as the basis for selection: /BACKUP, /CREATED (default),
    /EXPIRED, or /MODIFIED.

    For complete information on specifying time values, see the
    OpenVMS User's Manual.