For example, the delivery month of gold futures: the gold futures contract requires the submission of gold with specified fineness in a certain month.
Commodity exchanges stipulate different contract months for each commodity futures. It varies from commodity to commodity, and generally depends on the habits of commodity harvest season and transportation period. The delivery month of metal raw materials is not seasonal, while the delivery month of agricultural and sideline products such as wheat is seasonal. Some commodity exchanges allow buyers and sellers or either party to deliver on any day of the delivery month. The same commodity futures contract can specify different delivery months, the latest month and the longest forward two years.
For example, an original palm oil futures contract of Kuala Lumpur Commodity Exchange in Malaysia agreed that the delivery date was l2, 1, 2, 3, 4, 5, 7, 9, 1 1 and so on. The expiration date of the futures contract of each month is 15 of that month. If 15 is not a trading day, the last trading day before 15 is the expiration date. Therefore, the futures contract of the same commodity has different prices due to different delivery months.