When is the autumnal equinox solar term? What month is the autumn equinox?

The autumnal equinox is the date of the autumnal equinox. When is it? It is the sixteenth solar term in the twenty-four solar terms of the lunar calendar, and the time is generally from September 22 to 24 of the Gregorian calendar every year. The climate in the south began to decline from this solar term. First, the sun arrived at 180 (autumnal equinox) on this day, and the sun almost directly hit the equator of the earth, and the length of day and night is equal all over the world (regardless of the refraction of sunlight by the atmosphere and the shadow in the morning). After the autumnal equinox, the direct point of the sun continues to move from the equator to the southern hemisphere, and the days in the northern hemisphere become shorter and the nights become longer, that is, the days in a day are shorter than the nights; In the southern hemisphere, the days are long and the nights are short, which means the days are longer than the nights. 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. After that, as the direct point of the sun continued to move southward, a six-month polar night began near the North Pole, which gradually expanded and then narrowed. A six-month polar day began near the South Pole, which gradually expanded and then narrowed. On the third day of the autumnal equinox, the thunder stopped: the ancients thought that the thunder was because the yang was strong, and after the autumnal equinox, the yin began to be strong, so the thunder stopped. Sable bug blank households: some insects unearthed at the vernal equinox will return to the soil one after another after the autumnal equinox to prepare for the winter. Water begins to dry up: water vapor is not as abundant as in summer, and it will start to dry up gradually, so we will feel the air is getting drier and drier. Is the autumnal equinox fixed? No, the autumnal equinox is fixed between September 23rd and 24th of the Gregorian calendar every year. Are there any autumn tigers after the autumnal equinox? Without the autumnal 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. According to the standard of dividing seasons according to the average climate temperature, it must be that the average temperature is lower than 22℃ for five consecutive days before autumn is considered. According to this standard, the Jianghuai area generally enters autumn in the middle and late September. Literally, the word "autumn" consists of "valley" and "fire", indicating the maturity of five grains. After the autumnal equinox, autumn enters the late autumn season and then turns from cold to cold. As people often say, it's time for "an autumn rain and a cold". "Autumn" means the coming of summer and the beginning of autumn. Therefore, there is the idiom "a leaf falls to know autumn". On the occasion of the autumnal equinox, the summer heat is fading away, and the autumn tiger has passed. When the sun moves from the southern hemisphere to the northern hemisphere, people will feel that the weather is getting cooler and the autumn is crisp, which is the best living temperature all year round. In ancient times, the autumnal equinox was once a traditional "Festival of Sacrificing the Moon". For example, in ancient times, there was a saying that "the sun is sacrificed in spring and the moon is sacrificed in autumn". According to textual research, the original "Moon Festival" was set on the day of "Autumn Equinox", but there is not always a full moon because of the different days of August in the lunar calendar every year. And the moon without the moon is a big spoil the fun. Therefore, the Mid-Autumn Festival was later transferred from the Autumn Equinox to the Mid-Autumn Festival and fixed on August 15. In China, the traditional worship of the moon is generally based on the family. To attend Yue Bai, a priest (in charge of work), a eulogy (equivalent to the host) and several deacons (the priest's assistant) are selected. Usually, older female elders or housewives serve as priests. Eat autumn vegetables "Autumn eyes are spinach in autumn". Get off the boat, this sketch still has evidence to follow. In Lingnan area, Xie's family in Cangzhen, Kaiping used to be four cities (now Heshan is five cities), and there is an unbroken custom called "eating autumn vegetables at the autumnal equinox". "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. When searching in the wild, it is often green and thin, about the length of a palm. Picked autumn vegetables are usually boiled with fish fillets at home, which is called "autumn soup". There is a jingle: "autumn soup is dirty, wash the liver and intestines." The whole family is safe and healthy. "Since autumn, people still pray for peace and health at home. According to custom, farmers have a holiday on the autumn equinox. Every family should eat dumplings, cook a dozen or twenty or thirty dumplings without wrapping them, and put them on the edge of outdoor fields with thin bamboo forks, which is called sticking sparrows' mouths so as not to destroy crops. Of course, it is only the farmers' beautiful imagination and desire to stick dumplings on sparrows' mouths, but it also illustrates the truth that dumplings are sticky, difficult to digest and should not be eaten more. The autumnal equinox will arrive soon, and then the autumn cattle will be delivered to your door. The picture is printed with red paper or yellow paper on the lunar solar terms all the year round, and also printed with farmers' ploughing patterns, which is called "Autumn Cattle Map". The pictures are all folk singers, who mainly say things like good luck in autumn ploughing that do not violate the farming season. Every time they go to a house, they say whatever 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".