47.—(1) Subject to rule 45 an act required by these Rules, a practice direction or a direction given under these Rules to be done on or by a particular day must be done by 4:30 p.m. on that day unless otherwise directed.
(2) If the time specified by these Rules, a practice direction or a direction given under these Rules for doing any act ends on a day other than a business day, the act is done in time if it is done on the next business day.