Can someone answer me what is the date of September 19?

Nine days. Every nine days is 19 from the winter of the solstice, and 19 also refers to the first 19.

China has been in cold weather since the winter of November. "The Ninth Five-Year Plan" is a suitable 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.

In ancient times, especially in northern China, the conditions for working people to keep warm from the cold were simpler than their descendants. Winter is regarded as a threat and punishment, which directly affects people's mood and even makes them feel that winter is inexplicably long. At that time, in order to survive the long winter, the people of China invented the method of "counting nine" to pass the time, so as to alleviate the psychological crisis under the threat of winter.

Extended data:

The written record of the custom of "counting nine" was first seen in the Chronicle of Jingchu Times written by Liang Chaozong in the Southern and Northern Dynasties in 550 AD, with a history of 1445 years. It is recorded in the book that "the number of winter solstice days is 99,81day is the end of cold". Therefore, the custom of "counting nine" is intended to kill the dreary and cold winter and look forward to the return of spring to the earth.

There are many customs of "counting nine", among which "Jiujiu Song" is the most extensive and has a long history. These songs skillfully use the phenological phenomena in nature and vividly reflect the laws of weather changes during the Ninth Five-Year Plan period. As far as most parts of China are concerned, the weather was not the coldest when the 29th passed, but "1929, I can't reach it."

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