Md. Rule 1-204

(a) Generally. —

When these rules or an order of court require or allow an act to be done at or within a specified time, the court, on motion of any party and for cause shown, may (1) shorten the period remaining, (2) extend the period if the motion is filed before the expiration of the period originally prescribed or extended by a previous order, or (3) on motion filed after the expiration of the specified period, permit the act to be done if the failure to act was the result of excusable neglect. The court may not shorten or extend the time for filing a motion for judgment notwithstanding the verdict, a motion for new trial, a motion to alter or amend a judgment, a motion addressed to the revisory power of the court, a petition for judicial review, a notice of appeal, an application for leave to appeal, or an action to reject a health claims award or assessment of costs under Rule 15-403, or for taking any other action where expressly prohibited by rule or statute.

(b) Ex parte order. —...