N.D. Cent. Code § 41-02-26

(4) When the time for delivery is left open, unreasonably early offers of or demands for delivery are intended to be read under this Article as expressions of desire or intention, requesting the assent or acquiescence of the other party, not as final positions which may amount without more to breach or to create breach by the other side. See Sections 2-207 and 2-609.

(5) The obligation of good faith under this Act requires reasonable notification before a contract may be treated as breached because a reasonable time for delivery or demand has expired. This operates both in the case of a contract originally indefinite as to time and of one subsequently made indefinite by waiver.

(6) Parties to a contract are not required in giving reasonable notification to fix, at peril of breach, a time which is in fact reasonable in the unforeseeable judgment of a later trier of fact. Effective communication of a proposed time limit calls for a response, so that failure to reply will make out acquiescence. Where objection is made, however, or if the demand is merely for information as to when goods will be delivered or will be ordered out, demand for assurances on the ground of insecurity may be made under this Article pending further negotiations. Only when a party insists on undue delay or on rejection of the other party’s reasonable proposal is there a question of flat breach under the present section.

(7) Subsection (2) applies a commercially reasonable view to resolve the conflict which has arisen in the cases as to contracts of indefinite duration. The “reasonable time” of duration appropriate to a given arrangement is limited by the circumstances. When the arrangement has been carried on by the parties over the years, the “reasonable time” can continue indefinitely and the contract will not terminate until notice.

(8) Subsection (3) recognizes that the application of principles of good faith and sound commercial practice normally call for such notification of the termination of a going contract relationship as will give the other party reasonable time to seek a substitute arrangement. An agreement dispensing with notification or limiting the time for the seeking of a substitute arrangement is, of course, valid under this subsection unless the results of putting it into operation would be the creation of an unconscionable state of affairs.

(9) Justifiable cancellation for breach is a remedy for breach and is not the kind of termination covered by the present subsection.

(10) The requirement of notification is dispensed with where the contract provides for termination on the happening of an “agreed event.” “Event” is a term chosen here to contrast with “option” or the like.

(11) The last sentence of subsection (3) is new and is based on Section 1-302(b). It provides for greater party autonomy. In an appropriate circumstance, the parties may agree that the standard for notice is no notice at all.