What does the autumnal equinox mean?
What does the solar term of autumnal equinox 1 mean?
Represents the equal division of the autumnal equinox, and the length of day and night is equal. China's ancient book "The Story of the Spring and Autumn Period, Yin and Yang in and out" said: "The autumn equinox, Yin and Yang are also half-phase, so it is cold and hot day and night.
The autumnal equinox is one of the 24 solar terms of traditional festivals in China. On September 22nd, 23rd or 24th of Gregorian calendar, the sun reaches 180 degrees.
Twenty-four solar terms: "See the vernal equinox in mid-August". "Divide" means to divide day and night equally. Like the vernal equinox, the sun shines directly on the equator of the earth on this day, and day and night are equal. From then on, direct sunlight began to enter the southern hemisphere, and the northern hemisphere began to have shorter days and longer nights, and the temperature dropped, which was of universal significance throughout the country.
At the autumnal equinox, "fen" means "half". At the autumnal equinox, most parts of the earth are equally divided day and night, each with 12 hours; Near the North Pole and South Pole, the sun can be observed on the horizon all day on this day. After the autumnal equinox, the days in the northern hemisphere are short and the nights in the southern hemisphere are long. The characteristics of the autumnal equinox The autumnal equinox solar terms are special among the 24 solar terms.
What does the autumnal equinox mean?
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 it is cold and hot day and night." The autumnal equinox means "half" The "autumnal equinox" has two meanings: first, the time between day and night is equal. On this day, the sun reached the longitude 180 degrees, and directly hit the equator of the earth. Therefore, in most parts of the world, 24 hours are divided equally between day and night, each being 12 hours.
After the autumnal equinox, the direct point of the sun began to enter the southern hemisphere from the equator, and the northern hemisphere began to have shorter days and longer nights, and the day began to be shorter than the night. Near the North Pole, there are long nights and stars for six months in a year. Second, the climate changed from hot to cold. According to the division of seasons in ancient China, which began with beginning of spring, Changxia, beginning of autumn and beginning of winter, the autumnal equinox falls within 90 days of autumn and is divided equally in autumn. The autumnal equinox is on September 22nd, 23rd or 24th of the Gregorian calendar every year.
At the autumnal equinox, "fen" means "half". At the autumnal equinox, most parts of the earth are equally divided day and night, each with 12 hours; Near the North Pole and South Pole, the sun can be observed on the horizon all day on this day. After the autumnal equinox, the days in the northern hemisphere are short and the nights in the southern hemisphere are long. The characteristics of the autumnal equinox The autumnal equinox solar terms are special among the 24 solar terms.
What does the autumnal equinox mean?
In the autumn equinox, most parts of China have entered a cool autumn. The cold air from the south meets the gradually decaying warm and humid air, which causes repeated precipitation and the temperature drops again and again. As people often say, it's 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.
"beginning of autumn" is the beginning of autumn, "first frost" is the end of autumn, and "vernal equinox" is exactly half of the 90 days from beginning of autumn to the first frost. 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. In most areas, the rainy season has just ended, with a cool breeze blowing gently, the sky is high and the clouds are light in Wan Liqing, the air is crisp in autumn, the sweet-scented osmanthus is fragrant, the crab is fat and the chrysanthemum is yellow, and the autumn equinox is a beautiful and pleasant season. It is also an important solar term in agricultural production. After the autumnal equinox, the 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 has generally dropped below 22℃, and it has entered a cool autumn. "An autumn rain and a cold". The cold air from the south 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 flying all over the sky and the earth wrapped in silver. It is rainy and humid in autumn in the south and Liangshan Prefecture, which has great influence on autumn harvest, autumn ploughing and autumn planting.
The above is about the meaning of the vernal equinox solar terms, and what is the meaning of the vernal equinox solar terms. I hope it will help everyone.
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