Do the 24 solar terms in modern astronomy still have meaning?

The vernal equinox, autumnal equinox, summer solstice and winter solstice are still useful for modern astronomy. "Especially the vernal equinox, as the rising intersection of the ecliptic and the equator, is an important time point often used in astronomical observation: the starting point of the longitude (right ascension) of the equatorial coordinate system describing the position of celestial bodies is the vernal equinox on the celestial sphere; On a certain day of the year, the time when a right ascension celestial body is suitable for observation can be quickly calculated by the date difference between that day and the vernal equinox. "

In modern life, people can quickly remember and understand the "twenty-four solar terms" from different meanings. There are four solar terms according to the season: "beginning of spring, Changxia, beginning of autumn and beginning of winter"; These "four stands" respectively represent the beginning of four seasons. "vernal equinox, autumnal equinox, summer solstice, winter solstice" is divided from an astronomical point of view, reflecting the turning point of solar height change. According to the temperature, there are five solar terms, namely "slight summer heat, great summer heat, summer heat, slight cold and great cold", which are used to indicate the degree of heat and cold in different periods of the year. "Rain, Grain Rain, light snow and heavy snow" are classified according to precipitation phenomenon, time and intensity of ground rainfall and snowfall. "White dew, cold dew and first frost" are used to indicate water vapor condensation. According to the maturity of crops, there are two kinds: Xiaoman and Mang. "Jing Zhe, Qing Ming" is a reflection of natural phenological phenomena, especially Jing Zhe, the first thunder in the sky and the resurrection of underground insects, which indicates the coming of spring.