What did beginning of autumn say this afternoon?

Beginning of autumn afternoon indicates autumn heat.

The weather is cold in early autumn and hot in late autumn. It means that if the time in beginning of autumn is in the morning, it is "early autumn", and if the time in beginning of autumn is in the afternoon or evening, it is "late autumn". If beginning of autumn time is in the morning, the weather is cool; If beginning of autumn time is after afternoon, it will be hot for some time.

Seasonal division

Astronomy: the traditional method of dividing the four seasons according to the change of astronomical phenomena. The starting point of the four seasons is "Li Si" in the 24 solar terms, so beginning of autumn is the starting point of autumn. Beginning of autumn is the starting date of autumn according to the astronomical observation position. Autumn begins in the beginning of autumn and ends in beginning of winter, which is the result of celestial movement.

Temperature method: At present, the four seasons are often divided according to the temperature change, which is divided by the "average weather temperature" of modern scholar Zhang Baokun. According to the weather average temperature method, the average daily temperature for five consecutive days is between 10℃ and 22℃, which is regarded as autumn.