code: def send_updates(self):
          
          d = datetime.now()
          if self.timeaddr:
              self.tunnel.group_write(self.timeaddr,
                                      time_to_knx(d))
  
          if self.dateaddr:
              self.tunnel.group_write(self.dateaddr,
                                      date_to_knx(d))
  
          if self.datetimeaddr:
              self.tunnel.group_write(self.datetimeaddr,
                                      datetime_to_knx(d))
  
          if self.daynightaddr:
              from pysolar.solar import get_altitude
              alt = get_altitude(self.lat, self.long, d)
              if alt > 0:
                  self.tunnel.group_write(self.daynightaddr, 1)
              else:
                  self.tunnel.group_write(self.daynightaddr, 0)
docs: Send updated to the KNX bus.