What is the autumnal equinox?

At 4: 02 on September 23rd, Beijing time, the "autumnal equinox" in the twenty-four solar terms of the lunar calendar will be ushered in, and it will be divided equally day and night after the vernal equinox.

The autumnal equinox is the16th solar term among the 24 solar terms of the lunar calendar, which falls around September 23rd of the Gregorian calendar every year. The autumnal equinox is just in the middle of 90 days in autumn, which means "equal share", so it is called "autumnal equinox". On this day, the sun shines directly on the equator of the earth, distributing light and heat equally to the northern and southern hemispheres. The ancient book Spring and Autumn Stories said: "The autumn equinox is half cloudy and half sunny, so it is cold and hot day and night."

Since the autumnal equinox, the direct point of sunlight has been more and more inclined to the southern hemisphere. The day is shorter than the night, and the day is longer than the day until the winter solstice.

Autumn equinox season, breezy, blue sky and Wan Li, sunny weather, crisp autumn air, sweet-scented osmanthus fragrance, crab fat chrysanthemum yellow, is a beautiful and pleasant season, at the same time, it is also an important solar term in agricultural production.

Zhao Zhi Heng said that this festival is a busy season for autumn harvest, autumn ploughing and autumn planting in Sanqiu. Most areas of China have entered the autumn harvest season. Farmers are busy harvesting and drying grain, and the fields, fields and courtyards are all golden.

"The Millennium is divided into autumn nights, and it is cold all night." Health experts suggest that in this festival, in order to prevent colds, citizens should pay attention to diet conditioning, strengthen self-care and add autumn clothes in time.