Rule 17 Computation of time

where anything is required by these Orders to be done within a specified period of or after the happening of a particular event, the period shall be computed from the end of the day on which the event happens unless the period is expressed to be inclusive of such day;

where anything is required by these Orders to be done within a period not exceeding three days or where a period not exceeding three days is required by these Orders to elapse between the doing of an act and the happening of a particular event, no Saturday or Sunday nor any day on which the Office is closed shall be included in the computation of that period;

where the time prescribed for doing any act expired on a Saturday or a Sunday or any day on which the Office is closed, the act shall be in time if done on the next day on which the Office is open.