What do the Beginning of Autumn and the Autumn Equinox mean in 2022 - Today’s hot topics What is the difference between the Beginning of Autumn and the Autumn Equinox in 2022

What is the difference between the Beginning of Autumn and the Autumn Equinox in 2022?

1. Different times

Beginning of Autumn: On August 7 or 8 of the Gregorian calendar every year, the sun will rotate to the equinox The position of longitude 135°

Autumn Equinox: Between September 22 and 24 of the Gregorian calendar every year, the sun is located at 180° longitude.

2. Different meanings

The Beginning of Autumn: The Beginning of Autumn is the first solar term of autumn. The Beginning of Autumn marks the official start of early autumn

Autumnal Equinox: The Autumnal Equinox is the time of autumn The fourth solar term, after the autumnal equinox, most parts of our country have entered late autumn.

3. Different climates

The Beginning of Autumn: The Beginning of Autumn is the dog days of summer. At this time, the temperature is higher and the heat is unbearable. The temperature is similar to that of summer. After the Beginning of Autumn, there is another "Autumn Tiger" , the weather is still very hot at this time.

Autumnal Equinox: It is already late autumn at the Autumnal Equinox. This is a good time for autumn to be high and crisp, with cool golden breeze and fragrant osmanthus. There is a saying called "One autumn rain and one cold", which refers to the autumnal equinox.

4. Different positions

The Beginning of Autumn: The Beginning of Autumn is the 13th solar term among the 24 traditional solar terms in my country. At the beginning of autumn, the leaves of the sycamore tree will begin to turn yellow and wither, so there is a saying that "the leaves of the sycamore tree fall and the world knows autumn."

Autumnal Equinox: The Autumnal Equinox is the 16th solar term among the 24 traditional solar terms in my country. The autumnal equinox is the 30th day into autumn. At the autumnal equinox, day and night equinox, each occupying 12 hours. There are no polar day and night phenomena around the world.

What do the Beginning of Autumn and the Autumnal Equinox mean in 2022

The Autumnal Equinox is the 16th solar term among the 24 solar terms of the lunar calendar. It usually falls on September 22 or 23 every year. The climate in the south begins with autumn from this solar term. First, the sun reaches 180 degrees of ecliptic longitude on this day and shines directly on the earth's equator. Therefore, day and night are equally divided into 24 hours each, with 12 hours each; there is no polar day and night phenomenon in the world. After the autumnal equinox, the range of polar night near the North Pole becomes larger and the range of polar day near the South Pole becomes larger.

The Beginning of Autumn is the 13th of the twenty-four solar terms. It begins on August 7, 8 or 9 every year. "Autumn" means the end of summer and the beginning of autumn. At the beginning of autumn, the sycamore trees will definitely begin to lose their leaves, hence the idiom "one leaf falls to tell you the autumn". From a literal perspective, the word "Autumn" is composed of the characters for grain and fire, which means the grain is ripe. The Beginning of Autumn is the first solar term of autumn, and autumn is a transitional season from hot to cool, and then from cool to cold.

There are "four beginnings" in a year - "beginning of spring", "beginning of summer", "beginning of autumn" and "beginning of winter", which means the beginning of a quarter.

There are "two equinoxes" - "spring equinox" and "autumn equinox", which can be understood as cutting the year in half. That is to say, on the "Spring Equinox" or "Autumnal Equinox" every year, the day and night are the same length.

Characteristics of the Autumnal Equinox

During the Autumn Equinox, most areas of our country have entered the cool autumn. The cold air coming from the south meets the gradually attenuating warm and humid air, resulting in repeated precipitation, and the temperature It also fell again and again. As people often say, it has come to the time of "one autumn rain and one cold", but the daily precipitation after the autumnal equinox will not be very large. At this time, field cultivation was different in the south and north.

There is a farmer's proverb in North my country: "White dew comes early and cold dew comes late, so it is the right time to sow wheat at the autumnal equinox." The proverb clearly stipulates the time for sowing winter wheat in this area; and "When white clouds come in the autumnal equinox, everything is good." The song "Good Rice Planting" reflects the time of planting rice in the Jiangnan area. In addition, working people's taboos about the autumnal equinox are also summarized in proverbs, such as "the autumnal equinox is only afraid of thunder and lightning, but the extra rice will be more expensive."

"The Beginning of Autumn" is the beginning of autumn and the "Frost Descent" is the end of autumn, and the "Autumnal Equinox" is exactly half of the 90 days from the Beginning of Autumn to the Frost Descent. During the autumnal equinox, my country's Yangtze River Basin and the vast areas north of it have entered autumn, and the daily average temperature has dropped below 22°C.

The cold air mass in the north has begun to have a certain influence. The rainy season has just ended in most areas. The breeze is blowing, the sky is blue, the wind is sunny, the autumn air is crisp, the osmanthus is fragrant, the crabs are fat and the chrysanthemums are yellow. The autumnal equinox is beautiful and pleasant. season. It is also an important solar term in agricultural production. After the autumnal equinox, the direct sun's position moves to the southern hemisphere. The northern hemisphere receives less and less solar radiation, but the ground loses more heat, and the temperature drops significantly faster.

At this time, the temperature in the south generally drops below 22℃, entering the cool autumn. "One autumn rain and one cold day." Streams of cold air heading south meet the gradually attenuating warm and humid air, causing rainfall and temperature drops again and again. In the northern part of the Northwest Plateau, the daily minimum temperature drops below 0℃, and you can already see the magnificent snow scene with catkins flying in the sky and the earth covered with silver. In the southern region and Liangshan Prefecture, there are continuous rains in autumn and serious moisture damage, which has a great impact on autumn harvest, autumn plowing and autumn planting.