When is the slight cold festival in 2023, which is relatively cold?

When did the slight cold festival come in 2023? "Twenty-four solar terms" explains: December solar terms, the cold at the beginning of the month is still small, so the clouds are cloudy and half moon. Slight cold refers to the cold air accumulated for a long time, which means that the weather is cold but not extreme. Like great cold, slight summer heat, great summer heat and intense summer heat, it is a solar term indicating temperature change. The slight cold solar term is characterized by cold, but it is not extremely cold. After the winter solstice, the cold air frequently goes south, and the temperature continues to drop, and the temperature drops to the lowest during the slight cold and severe cold in a year.

Which is colder, slight cold or severe cold?

In the 24 solar terms Song Dynasty, there is a saying called 1929, and walking on the ice in 3949, which proves that 3949 is the coldest in winter solar terms, while 3949 generally refers to the slight cold and severe cold in the 24 solar terms, that is to say, the slight cold is probably in the period of 39, and the slight cold is in the period of 49. Combined with the twenty-four solar terms in Song Dynasty, under normal circumstances, slight cold is colder than severe cold. However, China has a vast territory, and the temperature in the south is different, and the climate is different every year, so not all areas are the coldest with slight cold, and some places are the coldest with great cold.