What is the autumnal equinox in 2020? Why is the autumnal equinox of 124 the earliest this year?

Today (September 22nd) is the time to officially enter the autumnal equinox, and it is also the earliest year to enter the autumnal equinox season in 124 years. I believe everyone has also felt the recent sudden drop in temperature, officially because the weather began to get cold after the autumnal equinox. Let's take a look at the customs and characteristics of the autumnal equinox and the reasons for the early autumnal equinox this year.

The autumnal equinox is coming.

The "autumnal equinox" is the fourth solar term in autumn and the sixteenth solar term among the twenty-four solar terms. The exact time to enter the "autumn equinox" this year is 2 1: 3 1 on September 22nd, which is also the earliest "autumn equinox" in recent 124 years. The earlier time dates back to 1896, and the exact time of this year's "autumn equinox" is 2 1: 30 on September 22nd.

Why did the "autumnal equinox" come so early this year?

Shi Zhicheng explained that the same solar term is 6 or 5 hours later than the previous year and 24 hours earlier in leap years. This is reflected in the date when the same solar term remains unchanged or lags behind the previous year 1 day; In leap years, it remains the same as or 1 day earlier than the previous year. In this way, the starting point of the same solar term has three different Gregorian calendar dates. Take the "autumnal equinox" as an example, there are three situations: September 22nd, September 23rd and September 24th.

The Gregorian calendar date of the autumnal equinox in 20 19 is September 23rd. Since 2020 is a leap year, there are 29 days in February, and the date of "Autumn Equinox" in the Gregorian calendar in 2020 is advanced to September 22nd.

"2020 is a leap year, and the year of the rat is also a leap year. Coupled with years of accumulation, this year's autumn equinox finally came earlier. " Shi Zhicheng emphasized that "the early autumn equinox is a normal calendar phenomenon, which will not adversely affect people's production and life, so the public need not worry.

Characteristics of autumnal equinox

During the "autumn equinox" season, cold air is easy to invade the human body, so we should always pay attention to the increase or decrease of clothes. Luo reminded that in order to prevent autumn dry diarrhea, besides going to bed early and getting up early, exercising and strengthening physical fitness, we should also pay attention to nourishing yin and moistening the lungs, nourishing the stomach and keeping warm, eating less cold food, drinking more warm water, and often eating some foods that moisten dryness and produce saliva, such as apples, oranges, pears, honey, lilies and duck meat. At this time, the sunshine gradually decreases, and people's emotions are often affected. Learn self-regulation. On the day when the mountains and red forests are dyed, you can climb mountains and overlook, breathe fresh air, or enjoy the golden sunshine in autumn outdoors.

In spring, as long as you sow a seed, you can harvest a lot of food in autumn. Since 20 18, the state has designated the "vernal equinox" as the "China Farmers Harvest Festival". Luo said that a good harvest festival is of great significance for mobilizing the enthusiasm, initiative and creativity of hundreds of millions of farmers, enhancing their sense of honor, acquisition and happiness, and fully implementing the rural revitalization strategy.