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What is the autumnal equinox in 2022-what is the autumnal equinox in 2022?
Introduction: The arrival of the autumnal equinox solar terms indicates that it has officially entered autumn and the summer heat has completely disappeared. The arrival of the autumnal equinox rings the bell of this autumn, and the climate of the whole country will drop sharply. The coolness of autumn has really come, so when is the autumnal equinox in 2022? When is the autumnal equinox in 2022? Let's take a look at Bian Xiao!

When is the autumnal equinox in 2022?

The autumnal equinox in 2022 is at 3: 20 on September 23, 2022, which is Friday, August 28 of the lunar calendar. On the day of the autumnal equinox, the point of direct sunlight reaches longitude 180 (autumnal equinox), almost directly to the equator of the earth, and the length of day and night is the same all over the world (regardless of the refraction of sunlight by the atmosphere and the dim shadow in the morning). After the autumnal equinox, the direct point of the sun continued to move from the equator to the southern hemisphere, and the days in the northern hemisphere began to shorten and the nights became longer, that is, the days in a day began to be shorter than the nights; The southern hemisphere is the opposite. Therefore, the autumnal equinox is also called the landing point. At the North Pole and South Pole, on the day of the autumn equinox, the sun is on the horizon all day.

According to the lunar calendar, "beginning of autumn" is the beginning of autumn and ends with "the first frost". The "vernal equinox" is exactly half of the 90 days from beginning of autumn to the first frost. Since the autumnal equinox, the climate has three main characteristics: the direct sunlight continues to move from the equator to the southern hemisphere, and the phenomenon of short days and long nights in the northern hemisphere will become more and more obvious, with shorter days and longer nights (until the winter solstice reaches long nights and short days); The temperature difference between day and night gradually increases. The situation in the southern hemisphere is just the opposite. After the autumnal equinox, the direct sunlight moves south, the days in the northern hemisphere become shorter, the nights become longer, and the temperature drops, which is of universal significance throughout the country.

At the autumnal equinox, the Yangtze River basin and its vast northern area have entered autumn, and the daily average temperature has dropped below 22℃. The cold air mass in the north began to have some influence. The rainy season has just ended in most areas, with a cool breeze blowing gently. Autumn is crisp and the sky is high and the clouds are light. After the autumnal equinox, the direct sunlight moved to the southern hemisphere, and the northern hemisphere got less and less solar radiation, but the ground lost more heat and the temperature dropped significantly. Agricultural proverbs say: "An autumn rain is a cold", "The white dew is divided into autumn nights, and one night is cold".

Agricultural activities in autumn equinox

The characteristics of rapid cooling in autumn make "Sanqiu solar terms for health" particularly tense in the busy autumn harvest, autumn ploughing and autumn planting. The autumnal equinox is a good time to harvest cotton and tobacco leaves from green to yellow. Winter wheat has been planted in North China, and the Yangtze River basin and vast areas in the south are busy harvesting late rice and ploughing the land to prepare for rape sowing. Drought and lack of rainfall or continuous rainfall in autumn equinox are the main unfavorable factors affecting the normal operation of Sanqiu, especially the continuous rainfall will make the upcoming crops lodging, mildewing or sprouting, resulting in serious losses. "Sanqiu" is a great help, and the word "early" is the key. Timely harvest of crops in autumn can avoid the harm of first frost and continuous rain, and timely sowing of crops in winter can make full use of heat resources before winter, cultivate strong seedlings to survive the winter safely, and lay the foundation for high yield in the coming year.

The traditional custom of autumnal equinox

1, eat autumn vegetables in the autumn equinox

In Lingnan area, Hakkas have the custom of eating autumn vegetables. Autumn vegetable is a kind of wild amaranth, which villagers call autumn Artemisia. On the autumnal equinox, the whole village went to pick autumn vegetables. The production method is the same as that of spring soup, and it is made into autumn soup with fish fillets. The jingle of vernal equinox becomes "autumn soup is dirty, washing the liver and intestines." The whole family is safe and healthy. "

Step 2 stick the sparrow's mouth

On the autumnal equinox, Hakka farmers have a holiday according to the custom. Every family should eat glutinous rice balls, and cook dozens, twenties and thirties of glutinous rice balls, and put thin bamboo forks on the edge of the field every day to stick birds' mouths to prevent them from damaging crops.

Step 3 fly a kite

The autumn equinox is also a good time for Hakka children to fly kites. Especially on the autumnal equinox, even adults attend. Kites are divided into Wang Zi kites, silver carp kites, moth kites, Leigong kites and Moonlight kites. The largest kites are two meters high and the smallest ones are two or three feet.

Step 4 send autumn cattle

At the autumnal equinox, people will send photos 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 print the farmer's farming pattern, which is called "Autumn Cattle Map". The people who send pictures are folk singers, who mainly say that autumn ploughing is auspicious and not against the farming season. Every time they go to a house, they improvise what they see until the owner is happy to give money. Although the words spoken are casual, every sentence rhymes beautifully. Commonly known as "Autumn", Qiu Ren is called "Qiu Guan".