Which solar term is the coldest in a year

The severe cold day is the last of the 24 solar terms. Like the slight cold solar term, it is a solar term that reflects the degree of cold weather. The time is about 65438+1October 20th every year. Every year around 65438+10.20, when the sun reaches 300, it is a severe cold. Twenty-four solar terms: "In mid-December, I met before (slight cold)." Give the time to pass the exam and choose the time. Quote "Three Rites and Righteousness": "Great cold is the middle, shaped by slight cold, so it is called great cold. At this time, there are frequent cold waves in the south, which is the coldest period of the year in most parts of China. The wind is strong, the temperature is low, and the snow on the ground does not melt, showing a cold scene of ice and snow.

There is a saying of "Jiujiu" in the lunar calendar, which is used to calculate seasons. The calculation method is from the solstice of winter (counting from the solstice of winter, which means the beginning of cold), every nine days are called a nine, the first nine days are called a nine, the second nine days are called a 29, and so on until the ninth nine days, when the number reaches 998 1 day. At this time, winter has passed and spring has arrived.

99 Songs: 1929 without lens; Walking on the ice in 3949; On May 9th and June 9th, I watched willows by the river. On July 9th, the frozen river opened. On August 9th, the geese returned. On September 9th, I added 19, and I farmed cattle everywhere.

"March 9th" refers to the third "nine days" after the winter solstice, that is, the 19th to 27th days after the winter solstice. Sanjiu is the coldest.