SET TIME_ORIGIN

        CLIC\SET TIME_ORIGIN  *|date

    Specify the time origin for the abscissa in time plots. This is normally
    the  day  for  which the first data is plotted, and time is displayed in
    hours since that day. This day is reset by using PLOT /RESET.

    "SET TIME_ORIGIN date" forces the time origin to the specified day (e.g.
    01-AUG-2004).  "SET TIME_ORIGIN *" resets the default (automatic) behav-
    iour.