docs: def _get_distance(self, pnt1, pnt2):
          """Get distance in meters between two lat/long points"""
          lat1, lon1 = pnt1
          lat2, lon2 = pnt2
          radius = 6356752  # km
          dlat = math.radians(lat2 - lat1)
          dlon = math.radians(lon2 - lon1)
          a = math.sin(dlat / 2) * math.sin(dlat / 2) + math.cos(math.radians(lat1)) \
              * math.cos(math.radians(lat2)) * math.sin(dlon / 2) * math.sin(dlon / 2)
          c = 2 * math.atan2(math.sqrt(a), math.sqrt(1 - a))
          d = radius * c
          return d