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 start of the autumn season; The time is1October 7-9, 10 every year. When the apparent sun reaches longitude 195. "Twenty-four solar terms" said: "In September, the dew is cold and will condense." Cold dew means that the temperature is lower than that of the white dew, and the dew on the ground is colder and will soon condense into frost. In the cold dew season, Nanling and the vast area to the north have entered autumn, the northeast has entered late autumn, and the northwest has entered winter or is about to enter winter.
Cold dew, the seventeenth of the twenty-four solar terms, belongs to the fifth solar term in autumn, which indicates the official end of the autumn season. Finger e; Longitude of solar arrival195; Celebrate every year from July 7th to 9th in Gregorian calendar 10 year 10. According to the climatic characteristics, in the cold dew season, autumn has entered the vast area in the north, late autumn in the northeast and winter in some areas in the northwest. Autumn is getting stronger in the south.