When did spring begin?

199 1 beginning of spring is 199 1 February 4th.

Beginning of spring's calculation method is as follows:

Calculation formula: [y * d+c]-L?

Interpretation of the formula: the last two digits of the number of years are multiplied by 0.2422 plus 3.87, and the whole number is subtracted from the number of leap years. In the 20th century, C value was 4.6295, 2 1 century C value was 3.87, and in the 22nd century C value was 4.15. ?

For example, the calculation steps of beginning of spring date of 199 1 year: [91× 0.2422+4.6295]-[(68-1)/4] = 26-22 = 4, then/kloc.

Extended data

The beginning of spring custom:

First, whip the cattle in spring

Whipping spring cattle, also known as whipping local cattle, originated earlier and has been preserved to this day, but it was changed to spring in Tang and Song Dynasties, and it has prevailed to this day. Especially after Song Renzong promulgated the Classic of Cattle, the custom of whipping cattle spread more widely and became an important part of folk culture.

Whipping cattle in spring is a very lively scene. The officer used the "Spring Whip" decorated with Huayang to draw the first whip, and then drew it in turn according to the ranking. In the end, after a local cow was beaten to pieces, onlookers flocked to compete for the broken soil. It is said that throwing it into one's own land is a good omen for a good harvest.

Second, bite the spring.

Beginning of spring sometimes has its own food, mainly spring cakes, radishes and spiced dishes. Whenever the spring world begins, there will be many vendors selling spring rolls in the market. First, I used to think that biting spring is eating radish, which actually includes eating spring cakes; Second, the so-called begging for spring means welcoming the spring.