"Twenty-four solar terms" said: "In the middle of June of 5438+00, it rained and was blown thin by the cold, so it condensed into snow. The words of the villain are not prosperous. "
"Light Snow" is a festival that reflects weather phenomena. The ancient book "Qunfangpu" said: "A light snow will snow when it is cold, but the ground is not cold and the snow is not heavy." In ancient China, light snow was divided into three stages: "When the rainbow disappeared; Second, the weather is rising and the atmosphere is falling; It was blocked three times and became winter. " The yang in the sky rises and the yin in the ground falls, which leads to the impassability between heaven and earth and the disharmony between yin and yang, so everything loses its vitality, and the heaven and earth are blocked and become a cold winter.
During the light snow solar term, a relatively stable meridional circulation has been established in East Asia, and low pressure or trough often appears in Siberia. When moving eastward, there will be a large-scale cold air going south, and there will be a large-scale gale and cooling weather in eastern China. Light snow solar term is a solar term with high frequency of cold wave and strong cold air activity. When strong cold air affects, it is often accompanied by the first snow in winter. The "Xiaoxue" solar term is generally on165438+1October 22nd or 23rd every year, and there is a formula (limited to Dongba time zone) (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=22.36, and 20th century =23.08.
For example, the date of light snow in 2088 = (88× 0.2422+22.36)-(88÷ 4) = 43-22 = 2 1, 165438+ 10/0/.
Exception: 1978 plus 1 day.