The light snow solar term is the second solar term in winter.

The correct order of light snow, slight cold, beginning of winter, winter solstice, heavy snow and severe cold should be: beginning of winter, light snow, heavy snow, winter solstice, slight cold and severe cold.

Beginning of winter: The longitude of the sun is 225 degrees. The beginning of winter. 165438+1October 7-8.

Xiaoxue: The longitude of the sun is 240. This means it's starting to snow. 165438+1October 22-23.

Heavy snow: solar longitude 255. As the snowfall increases, there may be snow on the ground. 65438+February 6-8.

Winter solstice: the longitude of the sun is 270 degrees. The cold winter is coming. 65438+February 2 1-23.

Slight cold: solar calendar 285. The climate began to get cold. 65438+1October 5-7.

Great cold: the longitude of the sun is 300. The coldest time of the year. 65438+1October 20 -2 1.

Count nine cold days, that is, from the solstice of winter, count a "nine" every nine days until the "99" of 81 days, and the weather will warm up. In fact, it is "99-99, plowing cattle everywhere"-90 days, which is 9 days.

In the traditional culture of China, nine is the extreme number, which is the largest, largest and longest concept. Nine nines is eighty-one, which is the "maximum" number. People in ancient China believed that after the solstice on September 8 1 day, spring must have arrived.