Seek twenty-four solar terms ~ the more specific, the better! thank you ...

At present, the popular calendar in the world is the solar calendar, while people in China use the lunar calendar more. The lunar calendar is also called the summer calendar, which is also called the lunar calendar corresponding to the solar calendar. It is a traditional folk festival in China and the crystallization of the ancient civilization and wisdom of the Chinese nation.

As early as the Spring and Autumn Period, people already had the concept of four seasons. During the Warring States Period, Shi Shen, a Wei Ren, compiled the world's first star map including the relationship between 28 stars and 5 stars, marking the beginning of a new era of astronomy in China.

The solar calendar is calculated according to the time required for the earth to revolve around the sun once. This week is 365 days, 5 hours, 48 minutes and 46 seconds. For convenience, we take 365 days as a year and set up a leap month every four years, increasing the original 28-day February to 29 days.

The lunar calendar is based on the cycle of the moon's profit and loss, which is about 29 days 12 hours, 44 minutes and 4 seconds. So the big moon has 30 days and the small moon has 29 days. The real lunar calendar has only 354 days a year, less than the solar calendar 1 1 day. In order to keep it in line with the cycle of hot and cold weather changes, it has to be added every two or three years. At present, under the guidance of science, the setting of leap month is more accurate.

In order to fully reflect the change of seasonal climate, ancient astronomers determined the vernal equinox, summer solstice, autumn equinox and winter solstice as early as the Zhou Dynasty and the Spring and Autumn Period, and divided the whole year into 24 equal parts according to the position change of the sun on the ecliptic and the evolution order of the ground climate caused by it, and named each equal part, which is the origin of the 24 solar terms.

These 24 solar terms are: beginning of spring, Rain, Sting, Vernal Equinox, Qingming, Grain Rain, Changxia, Xiaoman, Mangzhong, Summer Solstice, Xiaoxia, Daxia, beginning of autumn, Chushu, Bailu, Autumn Equinox, Cold Dew, First Frost, beginning of winter, Light Snow, Heavy Snow, Winter Solstice, Slight Cold and Great Cold. Each solar term is about half a month apart and divided into twelve months. The beginning of the month is called the solar term, and the middle of the month is called "Zhongqi". The so-called "qi" refers to meteorology and climate.

The twenty-four solar terms point out that climate change, rainfall and frost period are the results of long-term observation, exploration and summary of astronomy, meteorology and climate by working people in China, which have a very important and far-reaching impact on agricultural farming and are generally suitable for agricultural activities in the Yellow River Basin.

Since the Western Han Dynasty, the twenty-four solar terms have been used for generations to guide agricultural production without violating the farming season, arrange farming according to the solar terms, and carry out farming activities such as sowing, field management and harvesting. For thousands of years, it has been an "agricultural climate calendar" that farmers attach great importance to.

In order to facilitate memory and praise, the ancients also compiled the 24 solar terms into songs and poems.