What is the solar term of cold dew?

Cold dew is the17th solar term among the 24 solar terms.

At this time, the temperature in most parts of South China continued to drop. The average daily temperature in South China is less than 20℃. Even in the areas along the Yangtze River, it is difficult for the mercury column to rise above 30℃, while the minimum temperature can be reduced to below 10℃. Except for a few valley lowlands, the five-day average temperature in the northwest plateau is generally lower than 10℃, which is already winter according to the standard of four seasons climate division. Thousands of miles away, first frost and Wan Li are snowing, which is very different from autumn in South China.

The origin of solar terms

Every year around 65438+1October 8 (65438+1October 8 ~ 9), when the sun moves to longitude 195 degrees, it is the cold dew of 24 solar terms. "Cold dew" means that the temperature in this period is lower than that in "White dew", and the dew on the ground is colder and will soon condense into frost. Twenty-four solar terms: "September solar terms, dew will condense when it is cold." If the "white dew" solar term marks the change from hot to cold, then the summer heat has not completely disappeared, and crystal dew can still be seen in the morning. Then the "cold dew" solar term is a symbol of cold weather, marking the transition from cool to cold. The dew is cold and radiant. As the saying goes, "cold dew cold, Coody Leng everywhere dew".