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         [ASTRO\]TIME [time [date]] [/ZONE Z] [/UT1] [/TDT] [/NODRAW]

    Specify  the  time-date  of  computation. Time is normally understood as
    UTC; options /UT1 and /TDT may be used to change this to UT1 or TDT. The
    time  format  is  HH:MM:SS.SSS, and the date format is DD-MMM-YYYY. Time
    and date may be absent or replaced by an asterisk (*), which defaults to
    current system time.  Local civil time may be input instead of UTC, with
    the option /ZONE z, where z is the difference in hours between  UTC  and
    local civil time (use /ZONE 2 in western Europe in Summer, 1 in winter).

    By default, if the sun is visible, a Sun Avoidance Circle (see HELP  OB-
    SERVATORY)  is  plotted.  It can be suppressed using the /NODRAW option.
    Use HEADER to examine the value of the Sun Avoidance Circle.

Gildas manager 2018-02-21