What is the date of early autumn? 202 1. What is the date of early autumn?

202 1 beginning of autumn solar term is August 7th (June 29th of the lunar calendar) 14: 37.

1. Climatic characteristics of beginning of autumn: In beginning of autumn, precipitation and humidity are the turning points of the year, but they are decreasing. After entering autumn, in nature, the qi of Yin and Yang began to change, everything began to grow from lush to mature, and the climate began to transition from rainy and humid in summer to dry and rainy in autumn. Seasonal changes, rainfall, dry and wet changes in southern China are obvious; Judging from the temperature, "beginning of autumn" is often in the middle of a day.

2. About the origin of beginning of autumn.

(1) beginning of autumn is 13 of the 24 solar terms, and it is also the first solar term in autumn. It falls on August 7-9 of the Gregorian calendar every year. At this time, the bucket handle of the Big Dipper points southwest, and the sun reaches longitude 135. The twenty-four solar terms reflect the changes of "Qi" in the four seasons. Beginning of autumn is the node where the yang gradually closes, the yin gradually grows, and the yang gradually turns to yin. Beginning of autumn, which also means precipitation and humidity, is at the turning point of the year, with a downward or decreasing trend; In nature, everything begins to grow from lush to mature.

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. 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.