Is the day long and the night short or the day short and the night long from winter to the future?

After the solstice in winter, the days are long and the nights are short. From the solstice of winter to the next few days, the weather will change from the cold of winter to the warm day of late spring. Because the process of "counting nine" is the process that the cold pole turns warm and the cold disappears and warms, people often refer to this 998 1 day as "nine days" and "counting nine cold days".

Astronomical phenomena

Every year in the Gregorian calendar (65438+February 2 1-23), the direct point of the sun moves southward to the extreme. On this day, the sun shines directly on the Tropic of Capricorn (23 26' s), and the sun is most inclined to the northern hemisphere, with the smallest elevation angle, which is the shortest day and the longest night in all parts of the northern hemisphere. The solstice in winter is also the turning point of direct sunlight returning to the north. After this day, it went back, and the direct sunlight began to move northward from the Tropic of Capricorn, and the northern hemisphere (China is located in the northern hemisphere) increased day by day.

Although the days from winter solstice in the northern hemisphere are short, the temperature from winter solstice is not the lowest; It won't be very cold before the winter solstice, because there is still "accumulated heat" on the surface, and the real winter is after the winter solstice; Because of the great differences in climate in different parts of China, the climatic characteristics in the sense of astronomy and meteorology are obviously late for most parts of China.