The next rise 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
        :return: Return the next date when ISS will be over 10 degree above the
        horizon
        :rtype: datetime

def next_rise(self, latitude, longitude, altitude=None):
        """The next rise 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
        :return: Return the next date when ISS will be over 10 degree above the
        horizon
        :rtype: datetime
        """
        rise = self.pass_times(latitude, longitude, altitude,
                               2)
        timestamp = rise[0]['risetime']

        return datetime.fromtimestamp(timestamp)