The non-agricultural day mentioned in futures refers to the day when the United States publishes its non-agricultural population employment data. It is usually released at 9: 30 pm Beijing time on the first Friday of each month, and it is released one day in advance in case of holidays. Under special circumstances, it will be delayed irregularly. This data reflects the trend of American economy and is very important economic data, which often has a great impact on the world foreign exchange, stock market and futures market.