def get_station_temperature_datetime(self, station_id):
        """ Return temperature measurement datetime for a given station """
        request = requests.get(
            "{}/station/{}/parameters/temperature/datetime".format(
                self.base_url, station_id))
        if request.status_code != 200:
            return None
        return datetime.strptime(request.json(), "%Y-%m-%dT%H:%M:%S")