What is the vernal equinox in 2023?

The vernal equinox in 2023 is March 2 1.

The vernal equinox is one of the 24 solar terms and the fourth solar term in spring. The vernal equinox in 2023 is Tuesday, March 2nd, 2 1.

One of the 24 solar terms of the vernal equinox. The sun passes through a period of 0 to 15 on the ecliptic. About 15 days, from March 2 1 (or 20th) to April 5 (or 6th) every year. In a narrow sense, it refers to the moment when the sun passes through the intersection point (intersection point) of 0% longitude and equator on the celestial sphere, that is, March 2 1 (or 20).

This moment coincides with the vernal equinox, also called "vernal equinox". On this day, the sun shines directly at the equator, and the world is almost equal to day and night. After that, the position of direct sunlight moved northward, and the days in the northern hemisphere were long and the nights were short. Astronomy stipulates that spring begins in the northern hemisphere. Overwintering crops enter the spring growth stage.

The meaning of the festival name of the vernal equinox:

The "vernal equinox" means half, that is, it is divided into two parts, day and night are equally divided, and the cold and summer are balanced. In addition, the vernal equinox also means sharing spring equally. Traditionally, it is spring from beginning of spring to long summer, and the vernal equinox is in the middle of three months in spring. Therefore, the vernal equinox was also called "Japan-China", "Day and Night Equinox" and "Midspring Moon" in ancient times. At the vernal equinox, the sun shines directly at the equator of the earth, and the length of day and night is equal.

According to Yuan Wucheng's book "Twenty-four Solar Terms", "In mid-February, it is divided into 90 days and a half, so it is called division." Another "Spring and Autumn Story" said: "The vernal equinox, Yin and Yang are also half-phase, so day and night are cold and summer." Lunar Book: "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, hence the name vernal equinox."