Time
10.—(1) Where the time appointed by or under these Rules for doing any act expires on a Saturday, Sunday or public holiday, the act shall be done in time if done on the next day which is not a Saturday, Sunday or public holiday.
(2) Any time appointed by or under these Rules for the doing of any act may be varied–
(a)in relation to a Part IV case, by the chairman of the tribunal under rule 17(2) or 19(2); and
(b)in relation to any other case, by the Board on an application made to it for that purpose.