(a) Computation. In computing any period of time prescribed or allowed by these rules, by order of court, or by any applicable statute, the day of the act, event, or default after which the designated period of time begins to run shall not be included. The last day of the period so computed shall be included unless it is a Saturday, a Sunday or a holiday, in which event the period runs until the end of the next day which is not a Saturday, a Sunday or a holiday. When the period of time prescribed or allowed is less than 7 days, intermediate Saturdays, Sundays and holidays shall be excluded in the computation. As used in this rule, "holiday" includes any day designated as such pursuant to section 8-1 of the Hawaii Revised Statutes.(b) Enlargement. When by these rules or by a notice given thereunder or by order of court an act is required or allowed to be done at or within a specified time, the court for cause shown may at any time in its discretion (1) with or without motion or notice order the period enlarged if request therefor is made before the expiration of the period originally prescribed or as extended by a previous order or (2) upon motion made after the expiration of the specified period permit the act to be done where the failure to act was the result of excusable neglect; but it may not extend the time for taking any action under Rules 50(b) 52(b), 59(b), (d) and (e) and 60(b) of these rules and Rule 4(a) of the Hawaii Rules of Appellate Procedure, except to the extent and under the conditions stated in them.(d) For motions; affidavits. A written motion, other than one that may be heard ex parte, and notice of the hearing thereof, shall be served not less than 18 days before the date fixed for the hearing, unless a different period is fixed by these rules or by order of the court. Such an order may for cause shown be made on ex parte application. When a motion is supported by affidavit, the affidavit shall be served with the motion; and, except as otherwise provided in Rule 59(c), opposing affidavits may be served not less than 8 days before the date set for the hearing, unless the court permits them to be served at some other time.(e) Additional time after service by mail. Whenever a party has the right or is required to do some act or take some proceedings within a prescribed period after the service of a notice or other paper upon him and the notice or paper is served upon him by mail, 2 days shall be added to the prescribed period.Amended May 15, 1972, effective 7/1/1972, further amended June 29, 1973, effective 7/2/1973, further amended June 22, 1983, effective 7/1/1983, further amended April 23, 1985, effective 4/23/1985; further amended July 26, 1990, effective 9/1/1990; further amended September 11, 1996, effective 1/1/1997; further amended May 15, 1997, effective 6/2/1997; further amended December 7, 1999, effective 1/1/2000.