When is the Autumnal Equinox in 2021? What are the characteristics of the Autumnal Equinox?
The autumnal equinox arrives, and the weather is clear and cool. When is the Autumnal Equinox in 2021? Autumn is the season of harvest. As the eighth month of the lunar calendar arrives, the autumn atmosphere gradually becomes stronger. In such a beautiful season, Shuimoxiansheng.com will accompany you through every day of the eighth lunar month of 2021.When is the Autumnal Equinox in 2021?The Autumnal Equinox 2021 August 17 of the lunar calendar in 2021, September 23 of the new calendar, Thursday, 3:20:55 is the Autumnal Equinox, the sixteenth solar term of the twenty-four solar terms and the fourth solar term of autumn. The Big Dipper points to Ji; the sun reaches 180° of the ecliptic longitude; the solar term falls on September 22-24 of the Gregorian calendar every year.The Autumnal Equinox was once the traditional "Moon Worship Festival", which is the prototype of the Mid-Autumn Festival. According to research, the Moon Festival was originally scheduled for the Autumnal Equinox. However, since the date of this day in the eighth month of the lunar calendar varies every year, there is not always a full moon. And offering sacrifices to the moon without a moon is a great spoiler of the scenery. Therefore, the "Moon Festival" was later moved from the "Autumnal Equinox" to the Mid-Autumn Festival. What are the characteristics of the Autumnal Equinox?1. Temperature dropsDuring the autumnal equinox, the Yangtze River Basin and the vast areas to the north of my country have entered autumn one after another, and the average daily temperature has dropped below 22℃. The cold air mass in the north has begun to gain some strength. The rainy season has just ended in most areas, and the weather is clear and cool in autumn. After the autumnal equinox, the position of the sun's direct rays moves to the southern hemisphere. The northern hemisphere receives less and less solar radiation, while the ground loses more heat, and the rate at which the temperature drops significantly accelerates. 2. Day and Night Are Equal in Length On the day of the autumnal equinox, the point of direct sunlight reaches 180° of ecliptic longitude (the autumnal equinox), almost directly hitting the Earth's equator, and the day and night are of equal length everywhere in the world (without considering the refraction of sunlight by the atmosphere and the twilight shadows). After the autumnal equinox, the sun's direct point continues to move from the equator to the southern hemisphere, and the days begin to become shorter and the nights longer in all parts of the northern hemisphere, that is, the day begins to be shorter than the night within a day; the opposite is true in the southern hemisphere. Therefore, the autumnal equinox is also called the autumnal equinox. At the North and South Poles, on the day of the autumnal equinox, the sun stays above the horizon all day. Do you want to know your own Bazi? Want to figure out where your golden marriage is? Click on the [Premium Calculation] below to calculate your horoscope and fortune! |
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