* Parse the valid time range from the horizons file * Example of how it can look (MRO): * Trajectory files (from MRO Nav., JPL) Start (TDB) End (TDB) * -------------------------------------- ----------------- ----------------- * mro_cruise 2005-Aug-12 12:42 2006-Mar-10 22:06 * mro_ab 2006-Mar-10 22:06 2006-Sep-12 0