Futures delivery: When the futures contract expires, both parties to the transaction settle the expired open contract by transferring the ownership of the goods contained in the futures contract. Because futures have the maximum holding time, when the contract expires, it is the date when the goods must be delivered.

Delivery date of crude oil futures: generally, it is the third day before 25th of normal trading in the month when the contract expires. If the 25th day of normal trading in the current month is a non-working day, it will be postponed by one working day, so most of the time the delivery date is from 16 to 20 of the contract month.