Why is the 20th day of the first month 99?

202120265438 September 9+0 March 3-2021March1.

The number nine starts from the second half of June and the winter solstice of 65438+February in the solar calendar every year, which is a more suitable solar term in northern China, especially in the middle and lower reaches of the Yellow River.

From the day of winter solstice, you will enter the "number nine", commonly known as "cross nine", and then every nine days as a unit, which is called "nine". After nine "nines", it happens to be 8 1 day, that is, "nine out", and then spring blossoms.

Count nine weather changes.

The coldest period in winter usually occurs after the winter solstice. After beginning of winter, it means that it has entered winter, but it doesn't mean that it has started to be cold. So the heat stored on the surface in the second half of the year still has some energy, so it is not very cold.

There is a folk saying that it is "a spring in October". "Xiaoyangchun in October" refers to the sunny, warm and comfortable "Xiaoyangchun" weather during the winter. So early winter (Meng Dong) is generally not very cold, but with the passage of time, cold air frequently goes south and the temperature gradually drops.

Children's songs on the count of nine

/kloc-no shooting in 0/929, on the ice in 3949. 5969, look at the willows by the river. Seven or nine rivers open and eight or nine swallows come. 99 plus 19, plowing cattle everywhere.

The specific time of cold weather in 202 1 year is as follows:

Time: 65438+February 2, 20201-65438+February 29, 2020.

Erjiu time: 65438+February 30, 2020-202165438+1October 7.

Sanjiu time: 202 1 year 1 month 8 -202 1 year 1 month 65438+6 days.

Time: 202 1 year 1 month 1 7th -202 1 year1month 25th.

May 9th time: 202165438+1October 26th-2021February 3rd.

June 9th Time: February 4th, 2021-February 1+02.

79 Time: 202 1 February13-2021February 21.

August 9th Time: February 22nd, 202 1-March 2nd, 2021.

99 time: 2021-March 3 1+0 1.