What does the autumnal equinox mean?

Question 1: What does the autumnal equinox mean? When is the autumn equinox? It is the sixteenth solar term in the twenty-four solar terms of the lunar calendar, and the time is usually September 23rd or 24th every year. The autumnal equinox means "half" China's ancient book "Spring and Autumn Dew, Yin and Yang in and out" said: "The autumn equinox is half cloudy, so it is cold and hot." The meaning of "autumnal equinox" has two meanings: first, the sun reaches the longitude of the yellow meridian 180 degrees on this day and directly hits the equator of the earth, so a day is divided into 24 hours, every hour 12 hours; There is no extreme day and night phenomenon in the world. After the autumnal equinox, the polar night range near the North Pole and the polar sun range near the South Pole gradually expanded. Secondly, according to the method of seasonal division in ancient China, which took beginning of spring, Changxia, beginning of autumn and beginning of winter as four seasons, the autumnal equinox lived in autumn for 90 days and divided the autumn equally. In ancient China, the autumnal equinox was divided into three periods: "When thunder comes, the sound will stop;" Second, wait for scorpion blank households; Wait for the water to dry. "The ancients thought it thundered because the sun be the spirit is strong, and the yin began to fill after the autumnal equinox, so it didn't thunder. Climatic characteristics: According to meteorologists, according to the lunar calendar, "beginning of autumn" is the beginning of autumn and ends with "the first frost", and the "autumnal equinox" is exactly half of the 90 days from beginning of autumn to the first frost. From the day of 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 of short days and long nights in the northern hemisphere will become more and more obvious. The days will gradually shorten and the nights will gradually lengthen (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. 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. 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 frost comes to the foot of the wild goose. "It's not surprising that the northeast cools down early and the autumnal equinox sees frost.

Question 2: What does the autumnal equinox mean in the 24 solar terms? The autumnal equinox is the nineteenth solar term in the twenty-four solar terms of the lunar calendar, usually on September 22nd or 23rd every year. The climate in the south began to decline from this solar term. First, the sun reaches 180 degrees on this day, pointing directly at the equator of the earth, so a day is divided into 24 hours, each 12 hours; There is no extreme day and night phenomenon in the world. After the autumnal equinox, the polar night range near the North Pole and the polar sun range near the South Pole gradually expanded.

On September 23rd, 20 15, at 6: 06, 2 1, the "autumnal equinox" solar term officially ushered in, which means that it officially entered autumn.

Question 3: What does the autumnal equinox mean? The autumnal equinox is the sixteenth solar term in the twenty-four solar terms of the lunar calendar, usually on September 22nd or 23rd every year. The climate in the south began to decline from this solar term. First, the sun reaches 180 degrees on this day, pointing directly at the equator of the earth, so a day is divided into 24 hours, each 12 hours; There is no extreme day and night phenomenon in the world. After the autumnal equinox, the polar night range near the North Pole and the polar sun range near the South Pole gradually expanded.

Question 4: What are the solar terms in autumn? What is the basic meaning of the autumnal equinox? Beginning of autumn, Chu and Shu, Bailu, Autumnal Equinox, Cold Dew, First Frost.

Beginning of autumn is the beginning of autumn, which indicates that it will be cold in summer.

The "location" of daylight saving time means "termination", and daylight saving time means "the summer heat officially ends".

The autumnal equinox is the beginning of this solar term.

The Millennium actually indicates that the weather is getting cold.

Cold dew means that the temperature is lower than that of the white dew, and the dew on the ground is colder and will soon condense into frost.

The first frost solar term means that the weather is getting colder and the first frost appears. This is the last solar term in autumn and also means the beginning of winter.

Question 5: What are the 24 solar terms after the autumnal equinox?

Spring rain surprises spring, sunny and empty valley, and summer is full of mountains and summer heat.

There are dewdrops in autumn, first frost in cold, light snow in winter and cold in winter.

Third sentence

Autumn dew and autumn frost.

The second is the autumnal equinox, followed by the cold dew.

Question 6: What does autumn wind mean? There is no autumn wind in the 24 solar terms, only the autumnal equinox.

"Autumnal Equinox" refers to the fact that autumn has already passed half since beginning of autumn, that is, the autumn is divided into two halves, and this day is the dividing point of the two halves. The season with the same meaning also has the vernal equinox.

The days between summer and winter are called "summer solstice" and "winter solstice".

There is also a solar term that is difficult to understand among the 24 solar terms, which means "curing summer heat". From then on, the hot weather began to hide, that is, it began to be less hot.