At the AGM at which a director retires, the company may fill up the vacancy by appointing the retiring director or some other person thereto. If the vacancy of the retiring director is not so filled-up and the meeting has not expressly resolved not to fill the vacancy, the meeting shall stand adjourned till the ________, at the same time and place, or if that day is a national holiday, till the ________ which is not a holiday, at the same time and place.