e routines <b>cspice_timdef_get</b> and <a href="cspice_timdef_set.html">cspice_timdef_set</a> exist
   to allow SPICE toolkit users to alter the default interpretation
   of time strings made by the routine <a href="cspice_str2et.html">cspice_str2et</a>.

   Normally, unlabeled time strings are assumed to belong to
   the Gregorian Calendar and are UTC times. However, you
   may alter the default behavior by calling <a href="cspice_timdef_set.html">cspice_timdef_set</a>.

   Calendar
   --------

   You ma