How did the heavy snow solar terms come from?

The ancients divided 24 solar terms according to the method of calming qi. The heavy snow solar term belongs to the 2nd1solar term among the 24 solar terms. The sun reaches the longitude of 255 degrees, and the solar term is from February 6 to 8 of the Gregorian calendar every year.

The most common solar term in heavy snow is cooling. According to statistics, the strongest month of cold air in China is 165438+ 10. After the strong cold air, the average temperature in 65438+February in most parts of the north is between -20℃ and -5℃, and frost will also appear in the south. Strong cold air often brings snowfall or blizzard.

Date calculation: [Y*D+C]-L

Interpretation of the formula: Y= two digits after the number of years, D=0.2422, L= leap year, 2 1 century C=7. 18, and 20th century =7.9.

For example, the date of heavy snow in 2088 = [88× 0.2422+7.18]-[88/4] = 28-22 = 665438+heavy snow on February 6.

Related proverbs

1, the snow is not frozen but the spring is chilly (Guangxi)

2, snow water closed, winter solstice is not allowed (black)

It is snowy and sunny, and there is a lot of snow in early spring (Kyrgyzstan)

4, heavy snow is not cold, next year's drought (Hebei)