N.D. Cent. Code § 28-06.2-03 (2025)
28-06.2-03. Answer by United States - Time limitation.
The United States, or an officer, employee, or agency thereof, shall serve an answer to the complaint or to a cross-claim, or a reply to a counterclaim, within sixty days after service upon the United States attorney of the pleading in which the claim is asserted.