## HEADER command

At any time during an ASTRO session, the HEADER command can be used to check the current time and observatory that have been selected. The output of the command also give sun-related information (sun rise, sun set, twilight times).

      UTC :    19-SEP-2007   02:18:59.998
      UT1 :    19-SEP-2007   02:18:59.698    D_UT1 :     -0.300
      TDT :    19-SEP-2007   02:20:05.182    D_TDT :     65.184
      Julian date :          2454362.60
      LST :        02:33:06.1453

      OBS :    BURE   05:54:28.500   44:38:02.000
      Alt.:    2.560 km     Sun Avoidance:    45.0 deg.

      SunRise/Set :      05:23:47.980   17:37:02.472
      Twilight              Start          End
      Civil :            18:10:55.799   04:49:54.653
      Nautical :         18:45:21.460   04:15:28.992
      Astronomical :     19:20:49.604   03:40:00.848