When is the autumnal equinox of 202 1 year? The arrival of the autumnal equinox solar terms means that we have officially entered autumn. The autumnal equinox is one of the twenty-four traditional solar terms in China, and we will have some customs and proverbs every autumnal equinox. So when is the autumnal equinox of 202 1 year?

202 1 year's autumnal equinox is what date and time 1 202 1 year's autumnal equinox time: September 23rd, 03: 20: 55, and the lunar calendar 202 1 year's August 17th, Thursday.

"Equinox" has two meanings:

First, the time between day and night is equal, and the day is long and the night is short, and the day is short and the night is long. On this day, the sun reaches the longitude of the yellow meridian 180 degrees, and shines directly on the equator of the earth, so the 24 hours of the day are divided equally in most parts of the world. Near the North Pole and the South Pole, the special phenomenon of "the sun circles on the horizon all day" can be observed on this day.

Second, the climate has turned from hot to cold. According to the division of seasons in ancient China, which started with beginning of spring, long summer, beginning of autumn and beginning of winter, the autumnal equinox is divided into 90 days in autumn, and the autumn is divided equally.

The custom of autumn equinox

1, send autumn cattle

When the autumnal equinox solar terms come, people send pictures of autumn cows door to door. In fact, sending autumn cattle is to print the annual lunar solar terms on red paper or yellow paper, and also to print the farmer's ploughing pattern, which is called "Autumn Cattle Map". The people who send pictures are folk singers who mainly say that autumn ploughing is auspicious, and if it doesn't go against the farming season, every time they go to a house, they will improvise and say whatever they see, until the owner is happy and gives money. Although the words come out casually, every sentence is rhyming and beautiful. Commonly known as "autumn", Qiu Ren is called "Qiu Guan".

2, vertical eggs

On the annual autumnal equinox, tens of millions of people all over the world are doing "vertical egg" experiments. At present, it is still difficult to research how this toy, which is called "China custom", became a "world game". However, the game is simple and interesting: choose a smooth and symmetrical fresh egg that has just been born for four or five days and gently stand it up on the table. Although there are many losers, there are also many winners. The autumnal equinox has become the best time for vertical egg games, so there is a saying that "when the autumnal equinox arrives, eggs are pretty". It is also a good auspicious implication that the erected eggs are beautiful.

The autumnal equinox of 202 1 year is the date of the month, the time of the day and the meaning of the autumnal equinox.

China's ancient book "Spring and Autumn Stories, Yin and Yang in and out" said: "The autumn equinox, Yin and Yang are also half-phase, so day and night are cold and summer." The autumnal equinox means "half". "Autumnal Equinox" means that according to the seasonal division method that beginning of spring, long summer, beginning of autumn and beginning of winter were the four seasons in ancient China, the autumnal equinox lived in autumn for 90 days and divided the autumn equally.

The meaning of the autumnal equinox "twenty-four solar term": "See the vernal equinox in mid-August". "Minute" means to divide the day and night equally. Like the vernal equinox, the sun shines directly on the equator of the earth, and day and night are equal. Since then, the position of direct sunlight has moved further south, and the days in the northern hemisphere have gradually become shorter and the nights have become longer, and the temperature has dropped, which is of universal significance throughout the country.

After the autumnal equinox, the days are getting shorter and the nights are getting longer in the northern hemisphere, and the days are getting longer and the nights are getting shorter in the southern hemisphere.

The days are getting longer and longer from the winter solstice, but longer than the night from the vernal equinox, shorter and shorter from the summer solstice, but shorter than the night from the autumnal equinox.

"Autumn Equinox" is also "China Farmers Harvest Festival".

The autumnal equinox is the sixteenth solar term in the "twenty-four solar terms" of Chinese lunar calendar, which happens to be half of the 90 days from beginning of autumn to first frost. In the autumn equinox, the weather is sunny, the osmanthus is fragrant, and the crab is fat and the chrysanthemum is yellow, which is the harvest scene of Man Cang, a valley with fragrant melons and fruits. Traditionally, the autumnal equinox is not only the end of autumn harvest and winter storage, but also the starting point of spring ploughing in summer sowing. As an agricultural proverb in North China puts it: "The white dew is early, the cold dew is late, and the autumn equinox is the right time to plant wheat." Therefore, the annual autumnal equinox is designated as "China Farmers Harvest Festival", which is not only a tribute and inheritance to the traditional "twenty-four solar terms" which is the crystallization of ancient wisdom, but also reflects the contemporary China people's awareness of natural replacement, adaptation to natural laws and adaptation to sustainable ecological development concept.

What is the date, time and minutes of the 202 1 year autumnal equinox? What are the climatic characteristics of the autumnal equinox?

During the autumnal equinox, most parts of China have entered a cool autumn, and the cold air from the south meets the gradually decaying warm and humid air, resulting in precipitation again and again, and the temperature also drops again and again. As people often say, it is time for "an autumn rain and a cold", but the daily precipitation after the autumnal equinox will not be great. At this time, the field farming in the south and the north is different.

The autumnal equinox means really entering autumn. Due to the cold weather in the northern hemisphere, geese, swallows and cuckoos began to fly from the gradually cold north to the south in droves.

"beginning of autumn" is the beginning of autumn, and it ends in "first frost", and the "Equinox" is exactly half of the 90 days from beginning of autumn to first frost. During the autumnal equinox, the Yangtze River basin and its vast areas to the north of China have entered autumn, and the daily average temperature has dropped below 22℃.

The cold air mass in the north began to have a certain influence. In most areas, the rainy season has just ended, the cool breeze is blowing gently, the sky is blue and Wan Li is sunny, the autumn air is crisp, the osmanthus fragrance is fragrant, the crab is fat and the chrysanthemum is yellow, and the autumnal equinox is a beautiful and pleasant season. It is also an important solar term in agricultural production. After the autumnal equinox, the position of direct sunlight moved to the southern hemisphere, and the northern hemisphere got less and less solar radiation, while the ground lost more heat, and the temperature dropped significantly.

At this time, the waiting temperature in the southern region generally dropped below 22℃, and it entered a cool autumn. "An autumn rain and a cold". The cold air flowing southward meets the warm and humid air that gradually decays, resulting in repeated rainfall and the temperature dropping again and again. In the northern part of the northwest plateau, the daily minimum temperature has dropped below 0℃, and you can already see the magnificent snow scene of flying all over the sky and the earth wrapped in silver. In southern China and Liangshan Prefecture, it is rainy and wet in autumn, which has a great impact on autumn harvest, autumn ploughing and autumn planting.