Traditional Culture Encyclopedia - The 24 Solar Terms - What is the relationship between the 24 solar terms and the year, month and day in mathematics?
What is the relationship between the 24 solar terms and the year, month and day in mathematics?
The time when the sun runs along the longitude of the Yellow River from zero 15 degrees is called "a solar term". It runs 360 degrees every year, and * * * experiences 24 solar terms, twice a month. Among them, the first solar term of each month is "solar term", that is, beginning of spring, Jingzhe, Qingming, Changxia, Mangzhong, Xiaoshu, beginning of autumn, Bailu, Hanlu, beginning of winter, Heavy Snow, Xiaohan, etc. 12 solar terms; The second solar term of each month is "Zhongqi", that is, there are 12 solar terms such as rain, vernal equinox, Grain Rain, Xiaoman, summer solstice, great heat, intense heat, autumnal equinox, first frost, light snow, winter solstice and great cold. "Solar term" and "neutral qi" appear alternately, each lasting 15 days. Now people have called "solar terms" and "neutral gas" solar terms.
The simple explanation is that every time the sun runs 15 degrees, it is called "a solar term", and it runs 360 degrees every year, so there are 24 solar terms in total. There are 12 months in a year, so there are 2 solar terms in each month.
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