—(1) Any period of time fixed by these Rules or by any judgment, order or direction for doing any act shall be reckoned in accordance with this Rule.
(2) Where the act is required to be done within a specified period after or from a specified date, the period begins immediately after that date.
(3) Where the act is required to be done within or not less than a specified period before a specified date, the period ends immediately before that date.
(4) Where the act is required to be done a specified number of clear days before or after a specified date, at least that number of days must intervene between the day on which the act is done and that date.
(5) Where, apart from this paragraph, the period in question, being a period of 7 days or less, would include a day other than a working day, that day shall be excluded.