Where is the Autumnal Equinox in 24 solar terms in 2022-Today's Hot Spot?

Autumn Equinox

Which solar term is it?

2022

Where does the autumnal equinox rank among the 24 solar terms?

Autumnal equinox is

The 24 Solar Terms

16 solar terms. The time is usually September 22-24 of the Gregorian calendar every year.

The correct order of the 24 solar terms is:

Beginning of Spring

、

Rain Water

、

Awakening of Insects

、

Spring Equinox

、

Qingming Festival

、

Grain Rain

、

Early summer

、

Grain Buds

、

Grain in Ear

、

Summer solstice

、

Minor Heat

、

Major Heat

、

Beginning of Autumn

、

The heat is over

、

White Dew

Autumnal equinox,

Cold Dew

、

Frost's Descent

、

Beginning of Winter

、

Minor Snow

、

Major Snow

、

Winter solstice

、

Minor Cold

、

Major Cold

"Equinox" has two meanings:

First, day and night are 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, the 24 hours a day are equally divided, 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 started with beginning of spring, Changxia, beginning of autumn and beginning of winter, the autumnal equinox is divided into 90 days in autumn and divided equally in autumn.

Since the autumnal equinox, the climate has two main characteristics:

The position of direct sunlight continues to move from the equator to the southern hemisphere, and the day in the northern hemisphere is shorter than the night until the shortest day is reached from the winter solstice.

(2) The temperature difference between day and night gradually increases. 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.

According to the lunar calendar, "beginning of autumn" is the beginning of autumn and ends with "the first frost", and the "vernal equinox" is just half of the 90-day journey 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 point of the sun 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.

Agricultural proverbs say: "An autumn rain is a cold", "The white dew is divided into autumn nights, and one night is cold". "In August, the wild goose gate opens, and the foot of the wild goose is frosty." It is not surprising that frost appears in the autumn equinox in a year when the temperature in Northeast China drops early. On the day of the autumnal equinox, the sun is located at the longitude of the yellow meridian 180 degrees, and the sunlight is almost direct to the equator, and the length of day and night in most parts of the world is almost the same. 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, which leads to repeated rainfall and the temperature drops 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.