17 CFR § 3.61 - Extensions of time for proceedings brought under § 3.55, § 3.56, and § 3.60 of this part.
(a) In general. Except as otherwise provided by law or by these rules, for good cause shown, the Commission or an Administrative Law Judge before whom a proceeding brought under § 3.55, § 3.56 or § 3.60 is then pending, on their own motion or the motion of a party, may at any time extend or shorten the time limit prescribed by those rules for filing any document. In any instance in which a time limit is not prescribed for an action to be taken concerning any matter, the Commission or the Administrative Law Judge may set a time limit for that action.
(b) Motions for extension of time. Absent extraordinary circumstances, in any instance in which a time limit that has been prescribed for an action to be taken concerning any matter exceeds seven days from the date of the order establishing the time limit, requests for extension of time shall be filed at least five (5) days prior to the expiration of the time limit and shall explain why an extension of time is necessary.