What is the meaning of the Autumnal Equinox?
Regarding the Autumnal Equinox among the 24 solar terms, some people may know that this solar term is a harvest solar term, but they do not know the meaning of this "Autumnal Equinox". The editor will take you to understand it. Mr. Shui Mo has carefully compiled detailed information about the eighth month of the lunar calendar in 2018. If you want to know the auspicious and inauspicious days in the eighth month of the lunar calendar, please go to Mr. Shui Mo.What is the Autumnal Equinox?There are two interpretations of the meaning of the Autumnal Equinox: 1. The day and night are equal, and the days gradually become shorter and the nights longer. On this day, the sun reaches 180 degrees of ecliptic longitude and directly shines on the Earth's equator. Therefore, the 24 hours of this day are equally divided into day and night, 12 hours each; there is no polar day or night phenomenon on the globe. 2. The climate changes from hot to cool. According to the ancient Chinese seasonal division method that uses the Beginning of Spring, Beginning of Summer, Beginning of Autumn and Beginning of Winter as the beginning of the four seasons, the Autumnal Equinox is located in the middle of the 90 days of autumn, dividing the autumn season equally. According to "The Spring and Autumn Annals: Yin and Yang in and out, Parts 1 and 2", "The Autumnal Equinox is when Yin and Yang are half and half, so the day and night are equal and the cold and heat are balanced." The "fen" in the Autumnal Equinox means "half".Autumnal Equinox Detailed ExplanationOn September 22, 23 or 24 of the Gregorian calendar every year, when the sun reaches 180° of the ecliptic longitude, the sunlight directly hits the Earth's equator and the day and night are equal. The word "fen" means equal division, just like the vernal equinox, which divides the day and night equally. After that, the position of direct sunlight moves further south, the days gradually become shorter and the nights longer in the northern hemisphere, and the temperature drops, which has universal significance across the country. During the autumnal equinox, most parts of my country have entered the cool autumn. The cold air moving south meets the gradually weakening warm and humid air, resulting in repeated precipitation and repeated drops in temperature. As people often say, it is the time when "one autumn rain brings one cold day", that is to say, from this time on, the climate will gradually transition to winter. During the Autumnal Equinox, field farming in the south and north is different. In North my country, there is an agricultural proverb that says: "White Dew comes early, Cold Dew comes late, and it is the right time to plant wheat during the Autumnal Equinox." The proverb clearly stipulates the time for sowing winter wheat in the region; and "White clouds come during the Autumnal Equinox, and good songs and rice planting are everywhere" reflects the time for sowing rice in the Jiangnan region. |
>>: Introduction to the Autumnal Equinox, Origin of the Autumnal Equinox
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