What season is the summer heat over, and what are the 24 solar terms?

The next solar terms in summer are beginning of autumn and beginning of autumn, which is the first 13 of the 24 solar terms and the first solar term in autumn, marking the official start of the seasons in Meng and autumn. "Autumn" means that summer is getting cold.

According to the position of the sun on the ecliptic, the whole year is divided into 24 periods, namely: beginning of spring, Rain, Sting, Equinox, Qingming and Grain Rain; Long summer, Xiaoman, Mangzhong, Summer Solstice, Xiaoshu, Dashu; Beginning of autumn, Chu Shu, Bailu, Autumnal Equinox, Cold Dew, First Frost; Beginning of winter, light snow, heavy snow, winter solstice, slight cold, severe cold.

These 24 solar terms are collectively called 24 solar terms, which indicate climate change and farming season. China used them to guide agricultural production in the 2nd century BC.

Extended data:

"Twenty-four solar terms" reflect the annual apparent motion of the sun, so the date of "Twenty-four solar terms" in the Gregorian calendar is relatively fixed, with a difference of 1-2 days. The earth revolves around the sun once every 365 days at 6: 09 and 10 second (exactly) and rotates once every 24 hours.

Because the orbital plane of the earth's rotation is not the same as the equatorial plane, but maintains a certain inclination angle, the position of direct sunlight on the earth is different all year round.

In the northern hemisphere, the sun shines directly on the Tropic of Cancer, which is called the summer solstice in astronomy. When the sun shines directly on the tropic of Capricorn, it is called the winter solstice. There are two times in a year when the sun shines directly on the equator, namely the vernal equinox and the autumn equinox; When the sun shines directly on the Tropic of Cancer or Tropic of Capricorn, it is the summer solstice and the winter solstice respectively. The direct point of the sun moves back and forth between the Tropic of Cancer and the south.