What is the hottest weather?

Volts are the hottest, followed by volts, and volts are cooler. The first ten days after lodging is the first day, and the surface humidity becomes larger. Every day, the ground absorbs more heat, but emits less heat, and the heat on the ground accumulates, so it gets hotter every day. Entering the alto, the heat accumulated on the ground is very high.

During the Mid-Autumn Festival, the subtropical high intensified. Under the control of the subtropical high, the descending airflow inside the high makes the weather clear and cloudy, which is beneficial to sunshine, the ground radiation heats up and the weather is hotter.

dog days

The dog days, which appear between the summer heat and the summer heat, are the period with the highest temperature, the highest humidity and the most severe sultry heat in a year. Three volts can be divided into initial volts, intermediate volts and final volts, and their dates are determined by the coordination of solar terms and solar terms in the dry branch calendar. After "entering the volt", many places in the country will enter the continuous high temperature mode.

The traditional almanac stipulates that "counting from the third Geng day in summer", that is to say, "counting down from the summer day until the third Geng day" is about to begin to dormant. The "Geng Day" here refers to the days prefixed with "Geng" in the ancient "Ganzhi Jiri Law". "crouching" means being forced to hide underground; This also means that it is too hot to move.

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.