What is the difference between beginning of autumn and the autumnal equinox? Does autumn begin at the beginning of autumn or the autumnal equinox?

There are four seasons in a year, and each season has six solar terms. If nothing else, beginning of autumn and the autumnal equinox definitely belong to the autumn solar terms. Looking at similar solar terms is actually different. What is the difference between beginning of autumn and the autumnal equinox? And many people don't know which of these two solar terms represents beginning of autumn. If you want to know whether autumn begins at the beginning of autumn or at the vernal equinox, don't miss my introduction.

What is the difference between beginning of autumn and the autumnal equinox?

The main difference between beginning of autumn and the autumnal equinox lies in time and climate.

In terms of time, beginning of autumn is the earliest and the autumnal equinox is the latest, and beginning of autumn stands for the beginning of autumn.

From the climate point of view, in beginning of autumn season, some areas are still in a state of continuous high temperature, while the autumn equinox is in a relatively cool climate.

"four stops and two points"

There are four stops in a year-beginning of spring, Changsha, beginning of autumn and beginning of winter, which means the beginning of a season.

Brief introduction of beginning of autumn.

Beginning of autumn is the 13 of the 24 solar terms and the first solar term in autumn, which marks the official start of the Qiu Meng season: "Autumn" means that summer is cool. In early autumn, Beidou points southwest. From this day on, autumn began, the autumn was crisp, the moon was bright and the wind was clear. Since then, the temperature has gradually decreased from the hottest time.

The first thing that "beginning of autumn" brings is the change of weather. From this day on, the sky was crisp, the moon was bright and the wind was clear, and the temperature gradually dropped. As the proverb goes, "It's cool in beginning of autumn" and "It's autumn in the morning and cold at night". Beginning of autumn is one of the "four seasons and eight festivals" in ancient times. People have the custom of offering sacrifices to the land gods and celebrating the harvest.

Brief introduction of autumnal equinox

The autumnal equinox is the sixteenth of the twenty-four solar terms, and the time is generally from September 22nd to September 24th of the Gregorian calendar every year. On the day of the autumnal equinox, the sun reaches the longitude 180 (autumnal equinox), almost reaching the equator of the earth, and the length of day and night is equal all over the world (regardless of the refraction of the sun light by the atmosphere and the shadow in the morning). In ancient times, there was a saying that "the sun is sacrificed in spring and the moon is sacrificed in autumn", and the autumnal equinox was once a traditional "moon festival". Now Mid-Autumn Festival comes from the traditional Mid-Autumn Festival.

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. 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.

There is a "dichotomy"-"vernal equinox" and "autumn equinox", which can be understood as cutting a year in half. That is, on the annual "vernal equinox" or "autumn equinox", day and night are equal in length.

Does autumn begin at the beginning of autumn or the autumnal equinox?

According to the lunar calendar, "beginning of autumn" is the beginning of autumn and ends with "the first frost". The vernal equinox is only half of the 90 days from beginning of autumn to the first frost. Therefore, according to the autumnal equinox theory of China's old calendar, this day is exactly half of the ninety days of autumn, and what we usually call autumn begins with the autumnal equinox. Since the autumnal equinox, the climate has three main characteristics: the position of direct sunlight continues to move from the equator to the southern hemisphere, and the phenomenon that the day is shorter than the night in the northern hemisphere will become more and more obvious (until the winter solstice reaches the longest night and the shortest day); The temperature difference between day and night will gradually increase, and the amplitude will be higher than 10℃. The temperature drops day by day, getting colder every day, and gradually entering the late autumn season. The situation in the southern hemisphere is just the opposite.

The autumnal equinox solar terms really entered autumn. As a solar term with equal time between day and night, people should also keep their bodies according to the law of balance between Yin and Yang in health care and the principle of "keeping Yin and Yang secret". According to Su Wenzhi's Theory of Truth, "Observe the position of Yin and Yang carefully and wait for a quiet period", and the position of Yin and Yang should not be deviated. In order to keep the balance between yin and yang, we must first prevent the invasion of foreign evils. The weather is dry in autumn, and the main evil is dryness. There is residual heat before the autumnal equinox, so it is more common in warm and dry; After the autumnal equinox, bursts of autumn wind hit, causing the temperature to drop gradually and the cold to get heavier and heavier, so there was more coolness and dryness. At the same time, the change of dryness, temperature and coolness in autumn is also related to everyone's physique and physical reaction. To prevent cold and dryness, we must persist in exercising, strengthen our physique and improve our disease resistance. Autumn exercise focuses on benefiting the lungs and moistening dryness, such as practicing breathing, chewing teeth, swallowing and moistening dryness. In terms of diet care, you should drink plenty of water and eat warm food, such as sesame, walnut, glutinous rice, honey, dairy products and pears. , can play the role of nourishing yin and moistening the lungs, nourishing yin and promoting fluid production. Autumn is the best time for people to taste crabs. But crabs are cold things and are not suitable for eating more. In terms of mental conditioning, the most important thing is to cultivate optimism and maintain psychological peace. Old people can talk less, climb higher and overlook more, and let the bad emotions such as melancholy and melancholy dissipate. At the same time, after the autumnal equinox, the climate is getting colder, which is the season of frequent and recurrent stomach diseases. Gastrointestinal tract is very sensitive to cold stimulation. People with chronic gastritis should pay special attention to keeping their stomachs warm.

What are the taboos of the autumnal equinox?

It doesn't rain in Jianghuai Guangxi

On the day of the autumnal equinox, people in the Jianghuai area most hope for rain. If the weather is fine, there will be drought. There is a folk song "If the autumnal equinox is sunny, it will last forever". Guangxi also has the habit of praying for rain in the autumn equinox. There is a folk proverb: "The night is cool and the autumn is dry." Obviously, it means that the autumn equinox will be very cold at night, and drought will occur, which will endanger the growth and development of crops.

Avoid easterly winds in the North China Plain.

In the autumn equinox, the east wind is the most taboo in the North China Plain. There is a saying: "The east wind in the autumn equinox will be dry in the coming year." If the east wind blows at the autumnal equinox, there will be drought in the next year, which will affect the growth and development of crops.

Lightning and thunder are forbidden in the autumn equinox.

On the autumnal equinox, lightning and thunder are taboo among the people. There is a rumor: "The autumnal equinox is only afraid of lightning. How expensive is the extra rice?" It is said that if there is lightning on the day of the autumnal equinox, it will affect the normal growth and development of crops in autumn, resulting in reduced crop production and soaring rice prices. Therefore, it is necessary to prepare for natural disasters in advance.