code: def min_time(self):
          
  
          min_time = Time(self._interval_set.min / TimeMOC.DAY_MICRO_SEC, format='jd', scale='tdb')
          return min_time
docs: Get the `~astropy.time.Time` time of the tmoc first observation
  
          Returns
          -------
          min_time : `astropy.time.Time`
              time of the first observation