Which season does the cold dew belong to?

Cold dew is the seventeenth solar term in the twenty-four solar terms of the lunar calendar, belonging to the fifth solar term in autumn, which indicates the official end of the autumn season; The time is1October 7-9, 10 every year.

Cold Dew

Cold dew is a solar term reflecting the characteristics of climate change, and "cold" refers to cold. It can be seen from the literal meaning that the weather has obviously turned cold at this time. Compared with the white dew, the temperature has dropped a lot, and the dew on the ground is colder, which is likely to become frozen dew, so it is called cold dew. Generally, the cold dew season is in Gregorian calendar1October 8 or 9 10, and the sun reaches 195 degrees on the day of cold dew.

At noon that day, the sun shadow was measured with standard gauge, and its length was 8 feet 2 inches, which is equivalent to 2.0 18 meters today. At night, the bucket handle observing the Big Dipper points to the E direction, that is, the northwest direction. This stage is usually in September of the lunar calendar. The temperature drops gradually. White dew, cold dew and first frost all indicate the phenomenon of water vapor condensation. 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 temperature to rise above 30℃, while the minimum temperature can drop below 10℃. Except for a few valley lowlands, the average temperature in the northwest plateau is generally lower than 10℃, which is already winter according to the standard of climate division of four seasons. First frost store, a thousand miles away, is quite different from the autumn scenery in South China.