Is the solar term Song accurate now?

Usually, it is accurate. Twenty-four solar terms originated in the Yellow River Basin. As early as the Spring and Autumn Period, four solar terms were set, namely, mid-spring, mid-summer, mid-autumn and mid-winter. After continuous improvement and perfection, by the Qin and Han Dynasties, the 24 solar terms had been completely established.

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.

There are five solar terms reflecting temperature changes: slight summer heat, great summer heat, summer heat, slight cold and severe cold. There are seven solar terms reflecting weather phenomena: rain, Grain Rain, white dew, cold dew, first frost, light snow and heavy snow. There are four solar terms reflecting phenological phenomena: Jing Zhe, Qing Ming, Xiaoman and Mang Zi.

Beginning of spring: bucket handle point method: fighting refers to yin; Solid gas method: solar meridian 3 15 degrees. Li is the first of the 24 solar terms. Standing is the beginning, and beginning of spring is beginning of spring. February 3 -5, Gregorian calendar.