Interpretation of vernal equinox The traditional meaning of vernal equinox and solar terms

Introduction: One solar term after another shows us the changes of the four seasons, and also tells us what to eat in which solar term, what to pay attention to, how to dress in this season, and what the weather changes are. It can be said that our life is inseparable from the 24 solar terms. So, what is the explanatory significance of the vernal equinox? What is the traditional significance of the vernal equinox solar terms? If you want to know the solar term of vernal equinox, you can have a look at my introduction.

Explanatory significance of vernal equinox

The vernal equinox is the fourth solar term in the "24 solar terms". "The vernal equinox, Yin and Yang. So it's hot and cold day and night. " 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, which is also the half of spring, hence the name vernal equinox." The vernal equinox usually refers to the moment when the sun's apparent yellow meridian is at 0, around February 15 of the lunar calendar (about March 19 ~22 in the Gregorian calendar).

At the vernal equinox, the direct point of the sun is on the equator, and then the direct point of the sun continues to move northward, so the vernal equinox is also called the "ascending equinox". In ancient times, it was also called "Japan-China", "Day and Night" and "Mid-spring Moon".

The significance of the vernal equinox, first, refers to the equal division of day and night, each of which is 12 hours; Second, the vernal equinox is in the middle of spring (from beginning of spring to Changchun), and the spring is equally divided.

Twenty-four solar terms: "in mid-February, half a minute, that is, half of 90 days, so it is called minutes." Autumn is synonymous. " "Spring and Autumn Stories Yin and Yang in and out" said: "The vernal equinox, Yin and Yang are also half-phase, so it is cold and summer day and night."

The vernal equinox is also a festival and ritual celebration. The ancient emperors had a system of offering sacrifices to the sun in spring and the moon in autumn. Book of Rites: "Sacrifice to the Temple of Heaven (located to the east of Ritan Road, Chaoyangmen, Beijing)." Ying Da Shu by Confucius: "Also called vernal equinox". In the Qing Dynasty, Pan Rongbi wrote "Ji Sheng at the age of Emperor Jingdi": "The vernal equinox and autumn are divided into national gifts, and scholars should not worship them.

In ancient China, the vernal equinox was divided into three periods: "First, waiting for the arrival of birds; Second, wait for Lei Nai to make a sound; Third, wait for electricity. " In other words, after the vernal equinox, swallows will fly from the south, and when it rains, the sky will thunder and lightning. The vernal equinox is recorded in the ancient calendar of China: "Three days before the vernal equinox, the sun entered the equator".

The vernal equinox is an important solar term, which is of great significance in astronomy: the northern and southern hemispheres divide the day and night equally. In climate, it also has obvious characteristics. Since then, the direct position of the sun has continued to move from the equator to the northern hemisphere. The days in the northern hemisphere are getting longer and shorter, and the nights in the southern hemisphere are getting shorter and shorter.

During the spring equinox, China has entered a bright spring except the Qinghai-Tibet Plateau, Northeast China, Northwest China and North China. At this time, the climate is mild, the rain is abundant and the sun is shining, and the wintering crops in most parts of China enter the spring growth stage.

The traditional method of dividing the four seasons in our country takes the "four stands" in the 24 solar terms as the starting point of the four seasons and the dichotomy and dichotomy as the midpoint. For example, in spring, beginning of spring is the starting point, the vernal equinox is the midpoint, and the long summer is the end point.

The division of the four seasons in the west takes "dichotomy and dichotomy" as the starting point of the four seasons, such as spring as the starting point and summer solstice as the end point. Western countries are located at higher latitudes, far away from the intersection of Huangchi and Huangchi, and take "equal division to" as the starting point of the four seasons, which actually reflects the local climate better than "Li Si". The four seasons divided by "dichotomy" and "dichotomy" in the west are one and a half months later than those divided by "Li Si" in China.

The traditional significance of the vernal equinox solar terms

1, astronomical significance

On the vernal equinox, the sun shines almost directly on the equator, which means that the length of day and night is almost equal all over the world.

2. Climate significance

After the vernal equinox, the climate in most parts of our country is getting warmer and the rain is increasing, which means that many parts of our country have entered a bright spring.

3. Traditional significance

In ancient China, spring refers to the period from beginning of spring to long summer, and the vernal equinox is right in the middle of this spring, so it means to divide the spring equally.

Is the vernal equinox cold or warm: it's not cold anymore.

With the arrival of the vernal equinox, the weather is no longer cold, the shock has passed, and most areas have ushered in a bright spring. At this time, day and night are equal, but they can't completely relax, and there is still the possibility of cold spring.

During the vernal equinox, the daily average temperature in all parts of China rose steadily to above 0℃ except the alpine mountain area and the area north of 45 north latitude. At this time, the cold has passed and the temperature has risen rapidly, especially in North China and Huanghuai Plain. The daily average temperature rises to above 10℃ almost at the same time as the rainy areas along the Yangtze River and the south of the Yangtze River, entering a bright spring. On the vast land, on the bank of willow green, the grass grows in Fei Ying, the wheat is jointing, the rape blossoms are fragrant, the peach blossoms are red, and Li Bai is coming in spring. South China is a scene of late spring.

"The vernal equinox, Yin and Yang. So it's hot and cold day and night. " A word "fen" tells the boundary between day and night, cold and heat. According to the lunar calendar, "it refers to the vernal equinox, which is about Sunday. The northern and southern hemispheres are equally divided day and night, which is also half of spring, so it is called the vernal equinox."

In ancient times, the vernal equinox was also a traditional festival, which left many customs, such as laying eggs at the beginning of spring, eating spring vegetables, offering sacrifices to spring, laying eggs vertically and so on. One of the most bizarre is "laying eggs vertically".