The term 1204(IF 1204) refers to the 20th12 of the month when the stock index futures contract is due for delivery and settlement.

The full name of futures is stock price index futures, which can also be called stock price index futures. Futures refers to standardized futures contracts with stock price index as the subject matter. The two sides agreed that they can buy and sell the subject matter index on a specific date in the future according to the size of the stock price index determined in advance.