What solar terms did September 19 start from?

From winter solstice to solar terms. The count of nine starts from the solstice of winter, which means that the cold season is about to enter. From then on, people began to count to nine to calculate the cold weather. As the saying goes, the solstice in summer is three years old and the solstice in winter is nine years old. Jiujiu, also known as Jiujiu in winter, is a folk method to calculate the date of cold weather and warm flowers in spring, and it is one of the popular customs in China. In traditional culture, 99 is the limit number, the largest, longest and longest concept.

From the solstice of winter, every nine days as a nine, * * * is divided into nine nines. After counting the last nine, spring will come. Count nine folk songs: 1929 did not shoot, walked on the ice in 3949, watched willows along the river in 5969, opened the river in 79, swallowed it in 89, and added 19 in 99, plowing cattle everywhere.