Cold dew means that the temperature is lower than the white dew, and the dew on the ground is colder and will soon condense into frost. It is the seventeenth of the twenty-four solar terms, and autumn belongs to the fifth solar term. Gregorian calendar1October 8 or 9, which means the official end of the autumn season and the change from cold to cold.

Cold dew is the seventeenth solar term among the twenty-four solar terms and the fifth solar term in autumn.

Finger e; Longitude of solar arrival195; Gregorian calendar1October 7 -9 10 every year.

Cold dew is a festival in late autumn and the beginning of the full moon in the dry calendar.

Cold dew is a solar term reflecting the characteristics of climate change. When entering the cold dew, there is cold air going south, the temperature difference between day and night is large, and autumn dryness is obvious.