1. The time for shipment or delivery or any other action under a contract if not provided in this chapter or agreed upon shall be a reasonable time. 2. If the contract provides for successive performances but is indefinite in duration, it is valid for a reasonable time but unless otherwise agreed may be terminated at any time by either party. 3. Termination of a contract by one party except on the happening of an agreed event requires that reasonable notification be received by the other party and an agreement dispensing with notification is invalid if its operation would be unconscionable.
41-02-27. (2-310) Open time for payment or running of credit - Authority to ship under reservation. Unless otherwise agreed: 1. Payment is due at the time and place at which the buyer is to receive the goods even though the place of shipment is the place of delivery. 2. If the seller is authorized to send the goods, the seller may ship them under reservation, and may tender the documents of title, but the buyer may inspect the
goods after their arrival before payment is due unless such inspection is inconsistent with the terms of the contract (section 41-02-61). 3. If delivery is authorized and made by way of documents of title otherwise than by subsection 2, then payment is due regardless of where the goods are to be received: a. At the time and place at which the buyer is to receive delivery of the tangible documents; or b. At the time the buyer is to receive delivery of the electronic documents and at the seller's place of business or if none, the seller's residence. 4. If the seller is required or authorized to ship the goods on credit, the credit period runs from the time of shipment but postdating the invoice or delaying its dispatch will correspondingly delay the starting of the credit period.