;+ ; converts time to FAST orbit number ; Only accurate to about one orbit. ; D Larson ;- function fa_orbit_time,time times='1996-08-30/22:01 1998-01-21/02:47 1999-06-07/17:21 2000-10-15/16:35 2002-01-27/18:26 2003-06-30/11:09 2004-11-10/22:21 2006-04-20/11:07 2007-09-25/22:00 2009-04-30/05:32' orbits=[ 103.01045 , 5599.8664, 11054.278, 16467.985, 21636.072, 27401.815, 32986.090, 38879.855, 44761.655, 51312.285] times=time_double(strsplit(times,' ',/extract)) orbn = interp(orbits,times,time_double(time)) return,orbn end