245. The addition of the votes shall begin, at the discretion of the returning officer,
(1) at the time he fixes, during the evening, on polling day;
(2) at 9 a.m. on the day after polling day;
(3) or at the time and on the day he determines, that day being any of the four days following polling day.
If the returning officer chooses to begin the addition of the votes after polling day, he shall notify each authorized party, recognized ticket and independent candidate concerned of the date, time and place selected for that purpose.