When is the date of the winter solstice in 2022?

Winter solstice time in 2022: 65438+February 22, 2022, 5:48:0 1, Thursday, November 29th of the lunar calendar. Winter solstice means cold is coming, which means the coldest weather is coming, so winter solstice is not the coldest time yet. In the coldest time of folk computing, the traditional "counting nine" method 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.

From the climate point of view, the average temperature in the northwest plateau is generally lower than 0℃ during the winter solstice, while it is only about 6℃ to 8℃ in the southern region. In addition, the winter solstice begins to count nine, and the winter solstice becomes the first day of counting nine. Regarding "Counting Nine", there is a folk song that says: "Don't do it in 1999, walk on the ice in March and April, willow along the river in May and June, the river in 1999 opens, swallows come in 1999, and cows in 1999 walk everywhere." However, in the low-altitude valley area of southwest China, even at the coldest local temperature of165438+ 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.

Around winter, although the northern hemisphere has the shortest sunshine time and receives the least amount of solar radiation, the heat accumulated on the ground in half of summer can also provide some supplement, so the temperature at this time is not the lowest. 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 the winter solstice is not too cold, and astronomy also stipulates that the winter solstice is the beginning of winter in the northern hemisphere. Astronomy believes that winter solstice is the beginning of winter, and for most parts of China, winter is obviously late. The solstice in winter is the shortest day in a year. After the winter solstice, 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.