Haw. R. Civ. P. 59

(a) Grounds. A new trial may be granted to all or any of the parties and on all or part of the issues (1) in an action in which there has been a trial by jury, for any of the reasons for which new trials have heretofore been granted in actions at law in the courts of the State; and (2) in an action tried without a jury, for any of the reasons for which rehearings have heretofore been granted in suits in equity in the courts of the State. On a motion for a new trial in an action tried without a jury, the court may open the judgment if one has been entered, take additional testimony, amend findings of fact and conclusions of law or make new findings and conclusions, and direct the entry of a new judgment.

(b) Time for motion. A motion for a new trial shall be filed no later than 10 days after entry of the judgment.

(c) Time for serving affidavits. When a motion for new trial is based on affidavits, they shall be filed with the motion. The opposing party has 10 days after service to file opposing affidavits, but that period may be extended for up to 20 days, either by the court for good cause or by the parties' written stipulation. The court may permit reply affidavits.

(d) On court's initiative; notice; specifying grounds. No later than 10 days after entry of judgment the court, on its own, may order a new trial for any reason that would justify granting one on a party's motion. After giving the parties notice and an opportunity to be heard, the court may grant a timely motion for a new trial, for a reason not stated in the motion. When granting a new trial on its own initiative or for a reason not stated in a motion, the court shall specify the grounds in its order.

(e) Motion to alter or amend judgment. Any motion to alter or amend a judgment shall be filed no later than 10 days after entry of the judgment.

(Amended May 15, 1972, effective July 1, 1972; further amended December 7, 1999, effective January 1, 2000.)