code: def pass_times(self, latitude, longitude, altitude=None, number=None):
          
          # Check input
          schema = Schema({
              Required('lat'): All(Any(int, float), Range(min=-80, max=80)),
              Required('long'): All(Any(int, float), Range(min=-180, max=180)),
              'alt': Any(None, All(Any(int, float), Range(min=0, max=10000))),
              'number': Any(None, All(int, Range(min=1, max=100)))
          })
          schema({
              'lat' : latitude, 'long': longitude, 'alt' : altitude,
              'number': number})
  
          # Build request
          payload = {'lat': latitude, 'lon': longitude}
  
          if altitude is not None:
              payload['alt'] = altitude
  
          if number is not None:
              payload['n'] = number
  
          data = requests.get('{}{}'.format(self.API_URL, self.API_PASS_TIMES),
                              params=payload, timeout=5)
  
          # Check error
          if data.status_code is 200:
              return data.json()['response']
          else:
              raise Exception("Error server n {}".format(data.status_code))
docs: The next pass times of the ISS.
  
          :param latitude: latitude in degrees of location you want iss pass
          above
          :type latitude: float
          :param longitude: longitude in degrees of location you want iss pass
          above
          :type longitude: float
          :param altitude: altitude in meters of location you want iss pass
          above, default is 100 when not given
          :type altitude: float
          :param number: number of next pass above the location, default is 5
          if not given. Min is 1, max is 100
          :type number: int
          :return: a list of the next pass of the ISS with the risetime and
          the duration
          :rtype: list