The specific time of the slight cold solar term

The slight cold in 2024 is on the Gregorian calendar 14:49:09, the lunar calendar1Saturday, October 6,1/October 25.

Slight cold, marking the official start of the season and winter, means that the weather has been cold for a long time, but it has not reached its extreme. The name of the slight cold solar term is explained in the twenty-four solar terms: December solar term, the cold at the beginning of the month is still small, so it is cloudy and half moon. A slight cold means that the weather has been cold for a long time, but it has not reached the extreme. It is related to severe cold, mild summer heat, severe summer heat and treatment.

After the winter solstice, cold air frequently goes south and the temperature continues to drop. The temperature drops to the lowest during the slight cold and severe cold in a year, and it is 239℃ during the slight cold. It's freezing and shaking badly, which is enough to explain the cold degree of slight cold. There is a great difference in climate between the north and the south of China, and long-term meteorological records also prove this point: in the north, the slight cold solar terms are colder than the severe cold solar terms; But for most parts of the south, the big cold solar terms are colder than the small ones.

North-south difference

According to the statistics of climate data, the coldest time in most parts of northern China is in the middle of June 5438+1October (June 5438+00 -20), and the annual slight cold solar term starts from June 5438+1October 5-7, and the solar term is about 15 days, just in the middle of the year. So for most parts of northern China, slight cold is. However, for most parts of southern China, it is the coldest during the severe cold solar term, generally starting from 65438+1October 20th (65438+1late October), and the coldest time of the year in southern China is 65438+1late October.

The slight cold in northern China is colder than the severe cold, because there is relatively little residual heat on the surface, which has been released by the slight cold. But at this time, the days are short and the nights are long, and the cold air is powerful, which makes the temperature drop to a minimum, and the temperature is slightly increased by the severe cold sun. In the south, the surface is hot, and the rest of the solar terms from hot to slight cold have not been released, so the temperature has not dropped to the lowest. In the severe cold, the surface waste heat is exhausted, and it is freezing. At this time, a little more sunlight and heat than slight cold will not play much role.