Beginning of autumn is Gengri. How to calculate the terminal voltage

August 7th this year is Boxer Day, which means that August 6th 1 1 (midnight) will be Boxer Day, while beginning of autumn time on August 20th12 is August 7th 10: 32, which means that the Boxer Day will be entered first and then beginning of autumn. It can be seen that any year when beginning of autumn is the Geng Day, it will enter the Geng Day first and then beginning of autumn, so the dog days of that year are 40 days.