Traditional Culture Encyclopedia - The 24 Solar Terms - Twenty-four knots arrangement
Twenty-four knots arrangement
Twenty-four solar terms are formulated according to the change of the earth's position on the ecliptic (that is, the earth's orbit around the sun), and each solar term corresponds to a certain position that the earth reaches every time it runs 15 on the ecliptic.
Extended data:
All the year round begins with "four stands", and the so-called "stand" is the beginning. Beginning of spring, Changxia, beginning of autumn and beginning of winter represent the beginning and arrival of spring, summer, autumn and winter respectively. In order to express the characteristics of time series more accurately, the ancients divided the solar terms into four groups according to the weather and phenology: divided, arrived, opened and closed.
The vernal equinox and autumnal equinox were called "equinox" in ancient times, and the solstice was the solstice in summer and the solstice in winter. In ancient times, it was called "the second solstice", "opening" was beginning of spring and Changxia, "closing" was beginning of autumn and beginning of winter, and beginning of spring, Changxia, beginning of autumn and beginning of winter were collectively called "four festivals", adding up to * * as "eight festivals".
Baidu encyclopedia-24 solar terms
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