What's the difference between beginning of autumn in the morning and beginning of autumn in the evening?

It's cool in the morning in early autumn and hotter in the afternoon.

There is a folk proverb called "beginning of autumn is cold in the morning and beginning of autumn is hot at night", saying that if beginning of autumn time is in the morning, the weather will be cool; If beginning of autumn time is after afternoon, it will be hot for some time. Whether beginning of autumn is early or beginning of autumn is late depends on the specific time. Early refers to the period from 0: 00 to 12: 00, and late refers to the period from 12: 00 to 24: 00.

China takes beginning of autumn as beginning of autumn, and beginning of autumn generally indicates that hot summer is coming and autumn is coming. After beginning of autumn, although the summer heat is hard to disappear for a while, there is still the afterglow of "autumn tiger", but the general trend is that the weather is getting colder and colder.

Extended data:

Considering that the period of "hot and cold" should refer to the seventh month of the lunar calendar, it is related to the ancient calendar of China. In ancient China, the moon was also recorded according to heavenly stems and earthly branches, and the solar terms became the starting and ending points of the month. Beginning of autumn corresponds to the beginning of the application of the moon, that is, the seventh month of the year. In addition, beginning of autumn usually appears at the turn of June and July in the lunar calendar, so people compare the relationship between cold and heat in July in the lunar calendar through the morning and evening in beginning of autumn.