The 24 solar terms reflect the influence of the moon on the earth.

The 24 solar terms reflect the influence of the moon on the earth as follows:

The lunar calendar comes from the phase change of the moon around the earth, and the solar calendar comes from the revolution of the earth. The moon goes around the earth for about 29 days, so there are almost so many days in a month. It takes about 365 days and 1/4 days for the earth to make one revolution, so a year is 365 days, and then there is a leap year every four years, but the exact number is a little less than 1/4, so 100 is not nourishing, but 400 years is a leap year.

The essence of leap month is that there is a difference between the moon change period of 12 and the period of revolution of 1, and the leap month is set to make up for this difference. In fact, accurately speaking, the lunar calendar is not a lunar calendar, but a yin-yang calendar, because the changes of the moon and the sun are taken into account at the same time, such as the setting of leap months and the 24 solar terms, which are actually derived from the changes of the sun.

The introduction of the 24 solar terms is as follows:

The 24 solar terms are: beginning of spring, rain, sting, vernal equinox, Qingming, Grain Rain, Changxia, Xiaoman, Mangzhong, Summer Solstice, Slight Summer, beginning of autumn, Early Summer, Millennium, 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.

"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.