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Beginning of spring, one of the 24 solar terms, is also called "",and "beginning of spring" means "beginning". China takes beginning of spring as beginning of spring, and beginning of spring when the sun reaches 365,438+05 degrees on February 4th or 5th every year. Twenty-four solar terms: "The first month is the same as the long summer, autumn and winter." The ancient "Li Si" refers to the beginning of spring, summer, autumn and winter, and its agricultural meaning is "planting in spring, growing in summer, harvesting in autumn and storing in winter", which summarizes the whole process of the relationship between agricultural production and climate in the middle and lower reaches of the Yellow River. Calculation formula: [y * d+c]-Interpretation of the L formula: the last two digits of the year are multiplied by 0.2422 plus 3.87 to take the whole number and subtract the leap year. 2 1 century c value =3.87, and in the 22nd century c value =4. 15. For example, the calculation steps of beginning of spring date in 2058 are [58× 0.2422+3.87]-[(58-1)/4] =17-14 = 3, so beginning of spring date is February 3. The Spring Festival coincides with beginning of spring: (1645-2800)16851704173417531772 65438. 1924 1943 1992 2038 2087 2 106 2 144 220 1 2220 2258 2296 23 15 2326 24 1 0 2440 2459 2478 2535 2554 25480799 18 18 1837 1848 1867 1932 1962 198 1 2000 20 19 2057 2076 2 133 2 152 2 17 1 2239 2285 2323 2334 2353 2372 239 1 2429 2448 2467 2505 2524 2543 2562 2573 2657 2725 2744