What do you mean, squat, middle squat, and last squat? How many days in all?

Entering the volt means entering the "dog days"; Midvoltage is the second volt of "three volts"; The last volt is the last volt of the dog days, commonly known as the autumn tiger. Three dog days, thirty or forty days.

Entering volts means entering "three volts". There is a folk proverb, "The first night falls in summer", which is the basis for establishing the first autumn. The almanac stipulates that "the number of volts starts from the third day of summer", that is to say, "it starts to count down from summer" and begins to fall on the third "Geng Day". The "Geng Day" here refers to the days prefixed with "Geng" in the ancient "Ganzhi Jiri Law".

Mid-lying, also called second falling, usually refers to the fourth Geng Day from summer to the future and the day before the first Geng Day after beginning of autumn. The fourth Geng Day after long summer was designated as the first day of crouching.

Fufu, Chinese characters, pinyin for mü, refers to the day before the first Geng Day after beginning of autumn and the second Geng Day after beginning of autumn, *** 10. The last volt is the last volt of the dog days, commonly known as the autumn tiger. The last few days are cooler in the morning and evening, and the sunshine is still strong during the day.

The length of dog days mainly lies in the difference between middle and next days. Because the third Geng day (the first autumn) after the summer solstice solar term occurs at different times every year, the number of days in the middle autumn is also different. The incubation time is long or short, which may be 10 day or 20 days. So there are two situations: some years are 30 days in dog days, and some years are 40 days.