When is the date of the winter solstice in 2022?

Winter solstice time in 2022: 65438+February 22, 2022, 5:48:0 1, Lunar calendar1/Thursday, February 29. The winter solstice means that the cold is coming, which means that the coldest weather is coming, so the winter solstice is not the coldest time. When folk computing is coldest, the traditional method of "counting nine" is often used. According to the number nine method, the coldest time of the year is "March 9".

Characteristics of solar terms in winter on solstice

The two main characteristics of the solar term from winter to solstice are low temperature, short days and long nights.

First, low temperature, the temperature is getting lower and lower.

Climatically, during the winter solstice, the average temperature in the northwest plateau is generally below 0℃, and the southern region is only about 6℃ to 8℃. In addition, the winter solstice begins to count to nine, and the winter solstice becomes the first day to count to nine. Regarding "Counting Nine", there is a folk song that goes like this: "Don't do it in September, walk on the ice in March and April, see the willows along the river in May and June, the river opens in July and September, the swallows come in August and September, and the cows go everywhere." However, in the southwest low-altitude valley area, even in the coldest local165438+ in early October, the average temperature is still above 10℃. It can be said that autumn goes and spring comes, and there is no winter all year round.

Second, the days are short and the nights are long, and the days are getting longer and longer.

From winter to around, although the northern hemisphere has the shortest sunshine time and receives the least amount of solar radiation, the accumulated heat on the ground in summer can also provide some supplement, so the temperature is not the lowest at this time. But after the winter solstice, the days will get longer and longer, so the winter solstice is equivalent to a demarcation point.

After the winter solstice, the solar radiation on the ground is still less than the heat lost by the ground radiation, so the temperature will continue to drop in the short term. In China, except for a few islands and coastal areas, 1 is the coldest month, so there is a folk saying that winter solstice is not too cold, and astronomy also stipulates that winter solstice is the beginning of winter in the northern hemisphere. Astronomy regards the winter solstice as the beginning of winter, which is obviously late for most parts of China. The solstice in winter is the shortest day in a year. From winter to the future, the direct point of the sun gradually moves northward, and the days in the northern hemisphere gradually become longer and the nights gradually become shorter.