When will the number of nine days in 2020 begin?

September 2020 is: 2019 65438+February 22. ?

The number nine starts from the winter solstice solar term, so September 19 starts from the winter solstice, and the winter solstice solar term of 20 19 is 2012.22. From this day on, the winter solstice solar terms are officially counted as nine, and the climate will not be very cold within one or nine days. After a while, it will be March 9.

Extended data

The coldest time in winter is usually after the winter solstice. After beginning of winter, it means the beginning of winter, not the beginning of winter means the beginning of cold. So there is still some energy in the heat stored on the ground in the second half of the year, so it is not very cold.

There is a folk saying that it is "October fever". "Indian summer in October" refers to the "Indian summer" weather in Meng Dong period. So in fact, early winter (Meng Dong) is usually not very cold, but with the passage of time, cold air frequently moves south and the temperature gradually drops.

In winter, the so-called "cold weather" is usually not too cold before the winter solstice. The really cold days are after the winter solstice, especially the "March 9th" and "April 9th".