What month is autumn?

Autumn comes after beginning of autumn, and beginning of autumn is the first 13 of the 24 solar terms, which is held from August 7th to 9th in the Gregorian calendar every year. At this time, the bucket handle of the Big Dipper points southwest, and the sun reaches longitude 135 degrees. Beginning of autumn is the first solar term and the starting point of autumn. Autumn begins in the beginning of autumn and ends in beginning of winter, which is the result of celestial movement. Beginning of autumn is the node where yang gradually closes, yin gradually grows, and yang gradually turns into yin. Autumn means precipitation, humidity, etc. At the turning point of the year, there is a downward or decreasing trend; In nature, everything begins to grow from lush to mature.