Is it from beginning of winter or winter solstice?

1 and September 19 are September 19 every nine days from winter to Sunday, which also refers to the first September 19.

2. From the winter solstice to the winter nonunion day (from winter to the future, the first nonunion day is called "Jiaojiu", which means the beginning of cold), every nine days is 19, the first nine days are called 19, the last nine days are called 29, and so on, it is 998 1 day. As the saying goes, "Summer solstice is three years old, and winter solstice is nine years old." . It is generally the coldest in April and September, which is the coldest period of the year; By the ninth five-year plan, the cold had disappeared and spring was blooming.