SDCL § 15-6-6(b): Enlargement of time.

When by this chapter or by a notice given thereunder or by an 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 §§ 15-6-50(b), 15-6-59(b) and (d), and 15-6-60(b), except to the extent and under the conditions stated in them.