What does the vernal equinox mean?

The vernal equinox, one of the 24 solar terms, is the fourth solar term in spring. The solar calendar reaches 0, and festivals are held on March 19 ~ 22 of Gregorian calendar every year. The vernal equinox is of great significance in astronomy, and the northern and southern hemispheres are equally divided day and night. After that, the direct position of the sun continued to move from the equator to the northern hemisphere, and the days in the northern hemisphere began to be longer than the nights.

The vernal equinox also has obvious characteristics in climate. It's warm, rainy and sunny at this time. The solar term of the vernal equinox refers to the position where the sun is located between 0 and15 of the yellow meridian, that is, from the vernal equinox to Tomb-Sweeping Day, and the Gregorian calendar is from March 20th to April 5th.

Extended data:

A word "fen" tells the boundary between day and night, cold and heat. At this time, the longitude of the sun is 0 degrees and the position of the sun is above the equator. It is recorded in the almanac that "the bucket refers to the vernal equinox, which is about Sunday, and the northern and southern hemispheres are equally divided day and night (except the poles), which is also half of spring, so it is called the vernal equinox." No matter north or south, the vernal equinox and solar terms are good times for spring.

The period from beginning of spring solar term to Tomb-Sweeping Day gas is the budding period of plant growth, and the human blood is also in a vigorous period, and the hormone level is also at a relative peak. Because the vernal equinox and solar terms divide day and night equally, people should pay attention to maintaining the balance of yin and yang in health care.

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