20 19 years, nine days, one * * *, how many days, when did it start?

90 days, 20 19 years from February 22, 20 18.

Jiujiu, also known as Winter Jiujiu, is a folk solar term in China. The number nine begins at the end of winter in 65438+February of the Gregorian calendar and ends on Everyone's Day. There is no exact information about when the custom of counting nine originated. However, it was popular at least in the Northern and Southern Dynasties. "Liang Chao Shu Jing Chu Chun Qiu" records: "The winter solstice is 998 1 day, which is the end of cold." Count nine cold days, that is, count nine every nine days from the winter solstice to the eighty-first day, and the weather will warm up.

In fact, it is "99-99, plowing cattle everywhere"-90 days, which is 9 days.

It has been a cold day in China since the winter of November. Astronomical experts say 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. It started from the day when it met Ren in winter and entered the "number nine", commonly known as "cross nine". From then on, it was called "Nine" every nine days. After nine "nines", it's just 8 1 day, and then spring blossoms.