Is the winter solstice 65438+February 22nd every year?

Every winter solstice is not necessarily 65438+February 22nd.

Therefore, the winter solstice, like Tomb-Sweeping Day, is called a festival, and usually comes on the second day of the Gregorian calendar 65438+February 2 1 or 65438+February 22. The winter solstice is the year with the shortest day and the longest night in the northern hemisphere. After the solstice in winter, the days will get longer day by day. The ancients said this about the winter solstice: As soon as the cathode arrived, the yang began to grow, the sun went south, the day was short and the shadow was long, so it was called "the winter solstice".

After the winter solstice, the climate everywhere has entered the coldest stage, which is often called "entering the ninth". In China, there is a folk saying that "it's cold in March, and it's dog days".

Solstice winter astronomical calendar:

As an important node of the 24 solar terms in China, the winter solstice has the shortest day and the longest night in the north of the equator. The winter solstice is the limit of the sun's southward travel, and the height of the sun in the northern hemisphere is the smallest on this day. On the solstice of winter, the sun shines directly on the tropic of Capricorn, and the sun is most inclined to the northern hemisphere.

The solstice in winter is the turning point of the sun's southward movement. After this day, I went back, and the direct point of the sun began to move northward from the Tropic of Capricorn (23 26' s), and the daytime in the northern hemisphere (China is located in the northern hemisphere) increased day by day.

From winter to around, the earth is located near the perihelion, and its running speed is slightly faster, resulting in that the time for the sun to directly shine in the southern hemisphere is about 8 days shorter than that in the northern hemisphere, so the winter in the northern hemisphere is slightly shorter than that in summer.