term% ls -F
term% pwd
term% cat index.txt
ASTRO(7)               Miscellaneous Information Manual               ASTRO(7)

       astro - print astronomical information

       astro [ -dlpsatokm ] [ -c n ] [ -C d ] [ -e obj1 obj2 ]

       Astro reports upcoming celestial events, by default for 24 hours start‐
       ing now.  The options are:

       d      Read the starting date.  A prompt gives the input format.

       l      Read the north latitude, west longitude, and  elevation  of  the
              observation  point.   A  prompt gives the input format.  If l is
              missing,  the  initial  position   is   read   from   the   file

       c      Report for n (default 1) successive days.

       C      Used with -c, set the interval to d days (or fractions of days).

       e      Report  distance between the centers of objects, in arc seconds,
              during eclipses or occultations involving obj1 and obj2.

       p      Print the positions of objects at the  given  time  rather  than
              searching  for  interesting conjunctions.  For each, the name is
              followed by the right ascension (hours, minutes, seconds),  dec‐
              lination  (degrees, minutes, seconds), azimuth (degrees), eleva‐
              tion (degrees), and semidiameter (arc seconds).  For the sun and
              moon,  the  magnitude is also printed.  The first line of output
              presents the date and time, sidereal  time,  and  the  latitude,
              longitude, and elevation.

       s      Print output in English words suitable for speech synthesizers.

       a      Include  a  list  of artificial earth satellites for interesting
              events.  (There are no orbital elements for the  satellites,  so
              this option is not usable.)

       t      Read  ÎT  from  standard  input.   ÎT  is the difference between
              ephemeris and universal time (seconds) due to the slowing of the
              earth's  rotation.   ÎT is normally calculated from an empirical
              formula.  This option is needed only for very accurate timing of
              occultations, eclipses, etc.

       o      Search for stellar occultations.

       k      Print  times in local time (`kitchen clock') as described in the
              timezone environment variable.

       m      Includes a single comet in the list of objects.  This  is  modi‐
              fied  (in  the  source)  to refer to an approaching comet but in
              steady state usually refers to the last interesting comet  (cur‐
              rently Hale-Bopp, C/1995 O1).

              ecliptic star data

              default latitude (N), longitude (W), and elevation (meters)



       The k option reverts to GMT outside of 1970-2036.