The solar term song is after.

September 19 is the first nine days, February 29th is the last nine days, March 9th is the third nine days, April 9th is the fourth nine days, and May 9th is the fifth nine days.

On the solstice after beginning of winter, "counting nine", commonly known as "crossing nine", means entering the coldest season of the year. The so-called "number nine" means that from the date of the "winter solstice", nine days is a unit, which is called "nine". After nine "nines", it is exactly 8 1 day, which is called "nine". From "September 19th" to "September 9th", the cold winter turned into a warm spring. Among them, March 9 is the coldest.

Extended data:

99 solar terms song:

1929 did not shoot; Walking on the ice in 3949; May 9, June 9, see the willows by the river; On July 9, the frozen river opened; On August 9, Yan returned; On September 9th, I added19; I plow cattle everywhere.

Analysis:

1, 1929 Don't make a move: 1929 After the solstice in winter, the weather is cold, and putting your hands outside will be unbearable and even cause frostbite, so you can't help but put them in your pocket, which means "Don't make a move".

2.3949: 3949 Walking on the ice is the coldest season of the year. There is thick solid ice in the river, so pedestrians can walk safely on the river.

3. Looking at willows along the river in May, 1969: At the coldest time, the weather began to get hotter in May, 1969. Rivers planted with willow branches began to sprout, and everything gradually recovered to eliminate the winter depression. People could not help but see willows.

4. When the ice and snow begin to melt, the frozen river will slowly thaw and the sound of water will be heard. In the warm weather in August and September, swallows will fly back from the south to nest and start a new round of busy and endless cycle.

5.99 plus 19, plowing cattle everywhere: 99 is the alarm in the 24 solar terms. The weather is getting warmer, and there is spring water gradually. The weather has been warmer. Most parts of China have entered the spring ploughing season, and cattle work is everywhere, which indicates new hope and a new beginning.

People's Daily Online-There are as many years as there are winter solstice.

People's Daily Online-Today, the solstice winter begins.