202 1 what is the solar term for sending spring cattle at the vernal equinox? Where is the direct sunlight?
202 1 spring equinox solar terms to send spring cattle?
On the day of the vernal equinox, there was a custom of sending photos of spring cattle door to door. The lunar solar terms throughout the year are printed on red paper or yellow paper, as well as patterns of farmers' ploughing and pictures of famous spring cows. The people who send pictures are folk singers with good temper, mainly saying things like spring ploughing and auspiciousness that do not violate the farming season. Every time they go to a house, they can't wait to talk about what they see until the owner is happy and gives money. Although the words come out casually, they are melodious and beautiful, commonly known as spring, and those who say spring are called spring officials.
Where is the direct sunlight in the solar terms of the vernal equinox: the equator.
At the vernal equinox, the direct point of the sun is at the equator, just like the vernal equinox. The summer solstice is in the Tropic of Cancer, and the winter solstice is in the Tropic of Cancer. Since then, the direct point of the sun has continued to move northward, so the vernal equinox is also called the rising equinox. Seen from the earth, the sun moves counterclockwise along the ecliptic, and the distance between the ecliptic and the equator on the celestial sphere is 180. The point where the sun passes through the celestial equator from south to north along the ecliptic is called vernal equinox.
The latitude of the sun's direct point varies with the angle between the earth's rotation axis and the orbital plane (ecliptic plane). Previously, the latitude of the direct point of the sun was in the southern hemisphere. With the revolution of the earth, the angle between the axis of rotation and the ecliptic plane gradually decreases and moves directly to the equator. At the vernal equinox, theoretically, the world is as long as day and night (see the dawn). After the vernal equinox, the days in the northern hemisphere are getting longer and shorter, and the nights in the southern hemisphere are getting shorter and shorter. At the vernal equinox, there are no extreme days and nights in the world. After the vernal equinox, it began to be extremely daytime near the North Pole, and its scope gradually expanded. Near the Antarctic, the extreme day ends and the extreme night begins, and the scope gradually expands.