'Track time changes.'

def _time_changed_cover_tilt(self, now):

    if self._requested_closing_tilt:
        self._tilt_position -= 10
    else:
        self._tilt_position += 10
    if (self._tilt_position in (100, 0, self._set_tilt_position)):
        self.stop_cover_tilt()
    self.schedule_update_ha_state()
