How long does it take from beginning of autumn to beginning of winter?

There are six solar terms from beginning of autumn to beginning of winter, namely beginning of autumn, Chushu, Bailu, Autumnal Equinox, Cold Dew and First Frost. Each solar term is 15 days, and the six solar terms are 90 days. Therefore, it takes 90 days to travel from beginning of autumn to beginning of winter.

Beginning of autumn doesn't mean the extreme 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, and the weather is 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.

Beginning of winter:

Beginning of winter is the 19th of the 24 solar terms and the beginning of winter. Bucket handle points to the northwest, and the longitude of the sun reaches 225, which intersects with Gregorian calendar165438+1October 7-8 every year. Stand still, build the beginning; In winter, everything will be collected in the end. Beginning of winter means that anger begins to close and everything enters a state of recuperation. Its climate has also changed from dry autumn to rainy and cold winter.

The commonly used methods of season division mainly include "solar terms method" and "temperature method". China traditionally takes the "beginning of winter" with "twenty-four solar terms" as the beginning of winter; The winter divided by the "solar terms law" means that everything enters a state of recuperation. According to the "temperature method", winter begins when the average temperature of the day falls steadily below 10℃ for five consecutive days. Winter divided by temperature means cold weather.