Full Analysis What does the autumnal equinox mean?

Autumnal equinox

The autumn equinox is the sixteenth of the 24 solar terms and the fourth solar term in autumn. Dou Zhi You; The sun reaches 180° ecliptic longitude; It is held on September 22-24 of the Gregorian calendar every year. On the day of the autumnal equinox, the sun shines almost directly on the Earth's equator, and the length of day and night is equal across the globe.

Autumnal equinox"points"That is"Deuce"、"Half"In addition to referring to the equal division of day and night, there is also a layer of meaning that the autumn is equally divided. After the autumnal equinox, the position of direct sunlight shifts southward, and the days in the northern hemisphere are shorter and the nights are longer, the temperature difference between day and night increases, and the temperature decreases day by day.

The autumnal equinox used to be traditional"Moon Festival", the Mid-Autumn Festival by"Autumn festival moon"evolved. On June 21, 2018, *** agreed to establish"Chinese Farmers' Harvest Festival"It was agreed that from 2018 onwards, the autumn equinox will be established every year"Chinese Farmers' Harvest Festival"。

The autumn equinox is the sixteenth of the 24 solar terms in the lunar calendar, and the climate in the south does not begin to enter autumn until this solar term. And because of the characteristics of rapid cooling in autumn, the "three autumns" of autumn harvest, autumn ploughing, and autumn planting are particularly tense. Let's take a look at the meaning of the autumnal equinox!

In the autumnal equinox, "fen" means "half". At the autumnal equinox, the global day and night are of equal length. After the autumnal equinox, the days get shorter and the nights get longer in the Northern Hemisphere, and the days get longer and the nights get shorter in the Southern Hemisphere.

In the ancient book "Spring and Autumn Dew, Yin and Yang in and Out", it is said: "The autumn equinox, yin and yang are half of each other, so the day and night are even, and the cold and summer are even."

In ancient China, the autumn equinox was divided into three phases: "one migratory bird to; The second is to wait for Lei Nai to speak; Three waiting for the start of the call. That is, after the autumn equinox, the swallows will come from the south, and when it rains, the sky will thunder and lightning; And said:

Wait for the thunder to start to stop; secondly, stinging insect blank households; Three wait for the water to start drying". It means that thunder is made because of the strong yang energy, and after the autumn equinox, the yin energy begins to flourish, so it no longer thunders."

At the time of the autumn equinox, most parts of our country have entered the cool autumn, and the cold air from the south meets the warm and humid air that gradually decays, producing precipitation again and again, and the temperature also drops again and again. As is often said, it is time for "one autumn rain and one cold", but the daily precipitation after the autumn equinox will not be very large. At this time, the fields in the north and south were different.

In North China, there is an agricultural proverb that says: "The white dew is early, the cold dew is late, and the autumn equinox is the right time to plant wheat." "The proverb clearly states when the winter wheat will be sown in the region; And "the autumn equinox weather is full of white clouds, and there are good songs and good rice cultivation everywhere" reflects the time of sowing rice in the Jiangnan area.

In addition, the taboo of the working people on the autumn equinox solar term is also summarized into proverbs, such as "the autumn equinox is only afraid of thunder and lightning, how expensive is the price of rice".

The characteristics of rapid cooling in autumn make the "three autumns" of autumn harvest, autumn ploughing and autumn planting particularly tense. According to research, China has long used the "autumn equinox" as a symbol of cultivation. At the end of the Han Dynasty, Cui Wei wrote in the "Four Peoples Moon Order":

Where wheat is planted to get the white dew festival can be in the thin field, in the autumn equinox in the middle field, and in the middle field after ten days. "The autumn equinox is a great time for harvest. Farmers should harvest the autumn crops in time to avoid the harm of early frost and even rain; It is also necessary to sow winter crops early at the right time to lay the foundation for a bumper yield in the coming year.

<>1. The autumn equinox is the sixteenth solar term in the twenty-four solar terms, and the time is generally September 22 and 24 of the Gregorian calendar every year. On the day of the autumnal equinox, the sun reaches 180° of yellow longitude (the autumnal equinox) and almost directly hits the Earth's equator, with the same length of day and night around the world (not taking into account the refraction of sunlight by the atmosphere and the shadow of morning and dusk). In ancient times, there was a folk activity of "spring festival day, autumn festival moon", and the autumn equinox was the traditional "moon festival" (Mid-Autumn Festival), and the Mid-Autumn Festival evolved from the autumn and evening moon festival.

2. After the autumn equinox, the direct point of the sun continues to move from the equator to the southern hemisphere, and the days and nights in the northern hemisphere begin to be shorter and longer, that is, the days begin to be shorter than the nights in a day; The Southern Hemisphere is the opposite. Therefore, the autumn equinox is also called the descending equinox. And at the North and South Poles, on the day of the autumnal equinox, the sun is on the horizon all day.

After this chain, as the direct point of the sun continues to move southward, a six-month polar night begins near the North Pole, and the range gradually expands and decreases. A six-month period of polar day begins near the South Pole, gradually expanding and shrinking.

The autumn equinox is one of the 24 solar terms in our country, and with the arrival of the autumn equinox, all over the country officially enters autumn, but many friends are not very clear about the meaning of the word autumn equinox. Here's what the autumnal equinox means.

What does the autumnal equinox mean

The autumn equinox is exactly half of the 90 days from the beginning of autumn to the frost, so it is called the autumn equinox. According to the 24 solar terms of the traditional Chinese lunar calendar, the autumnal equinox means the real beginning of autumn. As the weather in the northern hemisphere cools, geese, swallows, and cuckoos begin to fly in flocks from the gradually cold north to the south.

As the old saying goes, the autumn equinox is half of yin and yang, so the day and night are even, and the cold and summer are even. The autumn equinox solar term, yin and yang, refers to the autumn equinox, the qi of heaven and earth is yin and yang decline, and it is to the extent that it is evenly matched. Compared with the lush summer, when the flowers and trees are withering, the grass is withering and the leaves are falling, and people's emotions are also prone to a sense of desolation and depression.

The most typical representative of this autumn depression mentality is the sad autumn of Song Yu of the Warring States Period.

In fact, from the positive side, the clouds decrease during the autumn equinox, and the scenery is distinct, that is, the autumn water praised by the poet is the same color as the sky. Raise your head and the blue sky is thousands of miles, go out and enjoy the cool breeze, people say that the autumn is high and refreshing, and the osmanthus is fragrant, the crab fat chrysanthemum is yellow, it is a good opportunity to enjoy and taste the food. Therefore, if there is no sad autumn in people's hearts, the autumn equinox is actually a beautiful and pleasant season.

How to maintain health on the autumn equinox

1.Exercise: After the autumnal equinox, it's a good time to get some exercise. Walking, jogging, playing ball, swimming, or playing Tai Chi, Baduanjin, Wufowl Opera and other health qigong can be used. However, it should be noted that autumn exercise is not suitable for high-intensity, sweaty exercises.

2.Mood: The emotional regulation of the autumn equinox solar term is mainly to maintain the consciousness, converge the spirit, and reduce the sadness of the autumn. You can also enjoy the beautiful scenery with your family and friends when the autumn weather is crisp.

3.Daily life: the temperature difference between morning and evening is obvious in the autumn equinox, people with weak physique, gastrointestinal disease or chronic lung disease should pay attention to adding clothes in the morning and evening, can not blindly pursue autumn freezing, and should combine the actual temperature and their own physical conditions, especially pay attention to the warmth of the head and abdomen.