Frost's Descent, The Eighteenth Solar Terms

Oct. 23, 2024, is Frost's Descent, the eighteenth solar term in the Chinese lunar calendar, it is the last solar term of autumn.

The sun's ecliptic longitude is 210°; It is held on October 23-24 of the Gregorian calendar every year. After entering the frost solar term, the scene of late autumn is obvious, and the cold air moving south is becoming more and more frequent. Frost does not mean "frost", but rather a sudden drop in temperature and a large temperature difference between day and night. On the national average, "Frost's Descent" is the time of year when the temperature difference between day and night is the largest. In the frost season, all things are completed, all things are completed in Xu, the sun enters the ground, the yin begins to condense, and the weather begins to fall from frost. Since "frost" is a manifestation of cold weather and large temperature differences between day and night, "Frost's Descent" is named after this solar term, which means "the temperature drops sharply and the temperature difference between day and night is large". The Frost's Descent solar term is characterized by colder weather in the morning and evening, hotter at noon, large temperature difference between day and night, and obvious dryness in autumn. The Frost's Descent solar term mainly includes customs such as appreciating chrysanthemums, eating persimmons, climbing high and overlooking, and tonics.