How to determine the exact time in beginning of autumn?

August 7-9 of the Gregorian calendar every year.

Beginning of autumn doesn't mean that the extremely hot weather is over. Beginning of autumn is still in the summer heat period, and the summer heat will not come out until the second solar term in autumn. It's still very hot in early autumn.

The so-called "heat is in the dog days" is also called "beginning of autumn drops later", and there is at least "falling" hot weather after beginning of autumn. According to the calculation method of "dog days", the days of "beginning of autumn" are often in the middle of dog days, that is to say, the heat is not over, and the real coolness usually comes after the Millennium solar terms. The watershed of summer heat is not in the solar terms in beginning of autumn.

Meteorological change

The beginning of autumn doesn't mean the end of hot weather. After beginning of autumn, there was a summer solar term, which appeared after the summer solar term. As the saying goes, "Big summer and small summer are not summer, and summer in beginning of autumn is just summer." ?

The so-called "heat is in three volts", according to the calculation method of "three volts", beginning of autumn is often still in the "three volts" period until the summer heat, so the weather is still very hot in early autumn. The watershed of summer heat is not at the turn of summer and autumn. Therefore, it is too early for beginning of autumn to immediately cool down. After beginning of autumn, the summer heat was hard to disappear, and there was the afterglow of "autumn tiger".

China has a vast territory, and the climate between the north and the south is quite different, especially in the south. This solar term is still relatively hot. At the same time, because the typhoon season is getting farther away and the temperature is getting hotter, Chinese medicine also calls the period from beginning of autumn to the autumnal equinox "long summer".