Is the winter solstice the first day of September? Is the winter solstice September 19?

The solstice in winter is the beginning of the ninth festival. Therefore, it can also be understood that the winter solstice is the first day to enter the 99 solar term and the lowest temperature in the whole year. Although the temperature is not particularly cold during the winter solstice solar term, it will gradually get cold after entering the winter solstice solar term. It will get cold all over the country for three or four days on the ninth, and the cold weather will not end until the end of the ninth.