Solar term winter solstice HD

After the solstice in winter, it becomes early in the morning and late at night.

Every winter solstice around 65438+February 22nd, the direct point of the sun is on the tropic of Capricorn, with the longest day and the shortest night in all parts of the southern hemisphere. The higher the latitude in the southern hemisphere, the longer the day and the shorter the night, and the phenomenon of extreme day appears in the Antarctic circle.

The northern hemisphere is the opposite. The farther away from the tropic of Capricorn on the earth, the more inclined the sun's rays are, and the less solar heat is obtained. There is a saying in our country: after eating the winter solstice meal, it means that there is a long queue every day.

Extended data

Pointing to the bucket, the longitude of the sun is 270, which is the solstice in winter. The first month is the first month, November is the second month, and the winter solstice is the 22nd of the 24 solar terms. The winter solstice usually falls on 65438+February 2 1 or 65438+February 22 in the Gregorian calendar. For example, the specific time of winter solstice in 2020: 65438+February 2 1, 18: 02.

Note: The average time method (used before 1645) does not consider the uneven speed of the sun moving on the ecliptic, which is different from the constant gas method (used since 1645), and the specific intersection time of each solar term is also different.

Astronomically, the "winter solstice" is the turning point of the sun's southward movement. From winter to around, the earth is located near the perihelion, and its running speed is slightly faster, resulting in that the time of direct sunlight in the southern hemisphere is about 8 days shorter than that in the northern hemisphere in a year, so the winter in the northern hemisphere is slightly shorter than that in summer.