When is the great cold?

The severe cold solar term is 65438+1October 20th -2 1 on the Gregorian calendar every year.

The Great Cold is the last of the 24 solar terms. Fighting refers to ugliness; The solar meridian reaches 300; Celebrate on the calendar of 65438+1October 20-2 1 every year. Great cold, like slight cold, is also a solar term indicating the cold weather. Great cold refers to extremely cold weather. According to China's long-term meteorological records, there is no slight cold in the great cold solar terms in the northern region; But for most parts of the south, it is the coldest of the great cold solar terms.

During the severe cold solar term, the atmospheric circulation is relatively stable, and the adjustment period of circulation is about 20 days. This cycle. During the adjustment period, large-scale rain and snow weather and strong winds often occur. In some parts of China, severe cold is not as cold as slight cold, but in some years and a few coastal areas, the lowest temperature in the whole year will still appear in the severe cold solar terms. Therefore, it is necessary to continue to do a good job in the cold protection of crops, especially to protect livestock from wintering. Slight cold and severe cold are the periods with the least rainfall in a year. During the cold solar term all the year round, the rainfall in most parts of the south only increased slightly compared with the previous period, with 5 ~10mm in most parts of the south and only1~ 5mm in the mountainous areas of the northwest plateau. During the winter drought in South China, the water consumption is small, and the contradiction between supply and demand of farmland water is generally not prominent.