The last solar term among the twenty-four solar terms is

The last solar term among the twenty-four solar terms is Dahan.

Dahan, like Xiaohan, is a solar term that indicates the degree of cold weather. Dahan means that the weather is extremely cold. The Great Cold is between March 9th and April 9th, when cold waves move south frequently, making it the coldest time of the year. The Great Cold is at the end of the year, winter turns to spring, and once the Great Cold passes, a new cycle begins again. Therefore, the last solar term among the twenty-four solar terms is Dahan.

In some places in China, during the period from the Great Cold to the Beginning of Spring, there are many important folk customs, such as cleaning up the old and bringing in the new, making cured meats, and offering sacrifices to stoves and teeth. The tail tooth sacrifice is also called "tooth making", "tooth making sacrifice", etc. There is a folk custom of the whole family sitting together to "eat tail teeth" after the tooth sacrifice. The popular year-end "annual party" is a legacy of the "Yu Ya Festival".

Meteorological changes in the Great Cold solar term

During the Great Cold solar term, the atmospheric circulation is relatively stable, and the circulation adjustment period is about 20 days. When this kind of circulation adjusts, large-scale rain, snow, and windy cooling often occur. When there is a long-wave ridge to the west of 80 degrees east longitude and a large coastal trough in East Asia, China will experience persistent low temperatures due to the control of northwesterly airflow and the continuous replenishment of cold air. In some areas of my country, the major cold is not as good as the minor cold, but in the coastal areas of southern my country, the lowest temperature throughout the year occurs during the major cold solar term.

Dahan and Xiaohan are both solar terms that indicate the degree of cold weather. According to China's year-round climate data statistics, the coldest period of the year in northern China is mid-January of the Gregorian calendar every year. The Xiaohan solar term starts from January 5th to 7th every year, and each solar term lasts for about 15 days, with the middle period falling within the Xiaohan solar term. Therefore, for most areas in the north, the Minor Cold is indeed colder than the Great Cold.

Reference for the above content: Baidu Encyclopedia-Dahan