code: async def set_clock(self, date=datetime.now(),
                          timeout=OTGW_DEFAULT_TIMEOUT):
          
          cmd = OTGW_CMD_SET_CLOCK
          value = "{}/{}".format(date.strftime('%H:%M'), date.isoweekday())
          return await self._wait_for_cmd(cmd, value, timeout)
docs: Change the time and day of the week of the thermostat. The
          gateway will send the specified time and day of the week in
          response to the next time and date message from the thermostat.
          @date is a :datetime: object which defaults to now()
          Return the response from the gateway with format HH:MM/DOW,
          where DOW is a single digit: 1=Monday, 7=Sunday.
  
          This method is a coroutine