The winter solstice is coming. What does' Winter Solstice 'mean? Why is it not cold in the winter solstice? Is it cold in winter 2018? Don't worry, Xiaobian will show you.
The winter solstice is a natural Festival. It is also a famous festival in our country. On this day, many residents in our country will get together to eat dumplings, wonton, mutton soup, tangyuan and so on. Therefore, there is also the saying of "the winter solstice celebrates the new year", which shows that the winter solstice is as grand as our Spring Festival. In addition, the winter solstice is also a traditional festival to sacrifice ancestors and gods. What is the winter solstice? The winter solstice is one of the 24 solar terms. On the day of the winter solstice, the solar radiation in the northern hemisphere is the least, and it is also the day with the shortest day and the longest night. As time goes on, the day will gradually grow longer after the winter solstice, and the night time will gradually be ultra short, so it is also a node of day and night time.
As the saying goes, "walk on the ice on September 49", and this September 39 is calculated from the winter solstice, and the next three nine days are 27 days. For example, the winter solstice this year is December 22, so 39 days is the next 27 days, that is, January 17, 2019, and 49 days is January 26, 2019. This time of year is the coldest time of the year. At this time, many rivers in the north are frozen, and some fish are frozen to death in the ice. For example, Harbin Ice City, Heilongjiang Mohe and other places, which are famous in China, will be below - 10 or even below 20 degrees.
Although the winter solstice is the shortest day for China, its temperature is not the lowest. At this time, there is not a large amount of cold air going south, and at this time, there is a lot of atmosphere and water on the earth's surface that can store heat, which has the effect of "heat accumulation". At the end of September 49, the height of the sun gradually increased, and the heat emitted from the earth's surface was gradually greater than the heat absorbed. Finally, it was very cold instead of everything, until it reached the coldest peak in September 49. Therefore, we should pay more attention to keeping warm when we are in September 49, so as not to catch a cold.