Is the winter solstice the shortest day and the longest night in a year?

Yes, the winter solstice is the longest night and the shortest day in the northern hemisphere. After 65438+February 22nd, the days became longer and longer, and the nights became shorter and shorter.

In winter solstice, although the sun is low and the days are short, the temperature in winter solstice is not the lowest in meteorology. In fact, because there is still "accumulated heat" on the surface, it is usually not very cold before the winter solstice, and the real cold is after the winter solstice.

Because of the huge climate difference in China, this climatic winter is obviously late for most parts of China. The winter solstice marks the beginning of the cold season, and people begin to count nine to calculate the cold days.

Extended data:

The winter solstice is the southernmost day of the year. After this day, the direct point of the sun began to move northward from the tropic of Capricorn, and the length of the day in the northern hemisphere began to increase gradually, and the height of the sun also increased gradually at noon.

It is worth noting that around the winter solstice, the earth is located near the perihelion, and its movement speed is slightly faster, which leads to that the time of the sun 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.

The polar axis passes through the center of the earth and connects the north and south poles. The included angle with the earth's orbit plane is 66 34', which is perpendicular to the equatorial plane of the earth's rotation orbit plane.