When did the folk "Winter Nine" in China begin?

Gregorian calendar 65438+February 22nd.

"beginning of winter 99", also known as "99", is a folk solar term in winter in China, which reflects the general situation of temperature changes in winter in China.

"Winter September 9" generally starts from the day of winter solstice and ends with a fright, that is, from February 22nd to March 2nd of the following year in Gregorian calendar 12. Every nine days, until the end of 998 1, the weather gradually gets warmer.

Astronomical experts said that "the Ninth Five-Year Plan" is a more applicable solar term in northern China, especially in the middle and lower reaches of the Yellow River. As soon as the winter solstice arrives, it will enter the "count nine cold days". In our country, people generally call the winter solstice "nine numbers", that is, from the winter solstice, every nine days is divided into a "nine" and * * * is divided into nine "nine". When it reaches 8 1 day, it is called "nine peach blossoms".

Reasons for using number nine in extended data number "nine":

This has something to do with the ups and downs of Yin and Yang in China's traditional philosophy, indicating that the warmth has come and the cold has gone.

Nine is the number of "Zhiyang", also called Lao Yang, and nine is the largest number. The accumulation of "Zhiyang" means that Yin Qi is decreasing day by day, and it is tired to the end for nine times, which means that the cold is getting warmer and "the spring is already deep".

Baidu Encyclopedia-Winter 99