How many solar terms are there in a year?

There are 24 solar terms in a year: beginning of spring, rain, fright, vernal equinox, Qingming, Grain Rain, Long Summer, Xiaoman, Miscanthus, Summer Solstice, Slight Summer, Great Summer, beginning of autumn, Early Summer, White Dew, Autumn Equinox, Cold Dew, Early Frost, beginning of winter, Light Snow, Heavy Snow, Winter Solstice, Slight Cold and Severe Cold.

Solar term is a special festival in the trunk and branch calendar that expresses the change of natural rhythm and establishes "December construction" (monthly order). The 24 solar terms are: beginning of spring, Rain, Sting, Equinox, Qingming, Grain Rain, Changxia, Xiaoman, Mangzhong, Summer Solstice, Xiaoxia, Daxia, beginning of autumn, Early Summer, Bailu, Autumn Equinox, Cold Dew, Early Frost, beginning of winter, Light Snow, Heavy Snow, Winter Solstice, Slight Cold and Severe Cold. The twenty-four solar terms are related to cadres and gossip and have a long history. In the historical development, the 24 solar terms have been incorporated into the lunar calendar and become an important part of the lunar calendar.

"Twenty-four solar terms" is the product of ancient agricultural civilization and occupies an extremely important position in Chinese traditional agricultural society. Agricultural production is closely related to the rhythm of nature. It is a knowledge system formed by ancient ancestors who observed the movement of celestial bodies in agricultural time and realized the changing laws of one year, climate and phenology. Scientifically reveals the law of astronomical and meteorological changes, skillfully combines astronomy, agriculture, phenology and folk customs, and derives a large number of related seasonal cultures.

Solar term song:

The spring rain shakes the spring and clears the valley, and the summer is full of mountains and summers.

Autumn dew, autumn frost, little snow in winter and cold in winter.

The two festivals remain unchanged every month, with a maximum difference of one or two days.

The first half of the year is June 2 1 day, and the second half is August 23.