Which one is the beginning of autumn: the autumnal equinox or the beginning of autumn? Is the Autumnal Equinox before or after the Beginning of Autumn?
Which one is the beginning of autumn: the autumnal equinox or the beginning of autumn? Is the Autumnal Equinox before or after the Beginning of Autumn? The eighth month of the lunar calendar is called You, the Rooster Month. The word You originally means wine vessel. Follow Shui Mo Xiansheng website to learn more about the eighth month of the lunar calendar in 2022.Which one is the beginning of autumn: the autumnal equinox or the beginning of autumn?From the perspective of solar terms, the Beginning of Autumn refers to the beginning of autumn. However, at the beginning of autumn, some areas still continue to have high temperatures. Judging from the temperature, it is generally not until late September that the coolness of autumn will gradually begin. Therefore, the meaning of the Beginning of Autumn is generally considered to be a sign that the crops are ripe.The Autumnal Equinox, the 16th solar term in the 24 solar terms in the lunar calendar, usually falls on September 22 or 23 every year. The climate in the south begins to enter autumn from this solar term. First, the sun reaches 180 degrees of ecliptic longitude on this day and directly shines on the earth's equator. Therefore, the 24 hours of day and night are equally divided, 12 hours each; there is no polar day or night phenomenon on the globe. After the autumnal equinox, the range of polar night near the North Pole gradually increases, and the range of polar day near the South Pole gradually increases. The Beginning of Autumn is the 13th solar term among the 24 solar terms, and falls on August 7, 8 or 9 every year. "Autumn" means the end of summer and the beginning of coolness, which means the beginning of autumn. When the Beginning of Autumn comes, the paulownia tree will begin to shed its leaves, hence the idiom "one fallen leaf heralds the coming of autumn". From a literary perspective, the word "autumn" is composed of the characters "禾" and "火", which means the maturity of crops. Beginning of Autumn is the first solar term in autumn, and autumn is a transitional season from hot to cool, and then from cool to cold. Is the Autumnal Equinox before or after the Beginning of Autumn?Beginning of Autumn is the first solar term in autumn, and Autumnal Equinox is the fourth solar term in autumn, so Beginning of Autumn arrives first; at the Autumnal Equinox, the Big Dipper points to Album. The sun's ecliptic longitude is 180°. On the day of the autumnal equinox, just like the spring day, the sun shines almost directly on the equator and the length of day and night is almost equal. From this day on, the position of direct sunlight continues to move from the equator to the Southern Hemisphere, and the days begin to become shorter and the nights longer in the Northern Hemisphere. According to the autumn theory of the traditional Chinese calendar, this day is exactly half of the ninety days of autumn, so it is called the Autumnal Equinox. But astronomically speaking, autumn in the Northern Hemisphere begins at the autumnal equinox. The Autumnal Equinox is a solar term that represents the change of seasons. On the day of the autumnal equinox, the sun is at 180 degrees of ecliptic longitude, the sunlight almost directly hits the equator, and the day and night are almost equal in length. At this time, the average temperature in the Sichuan Basin generally dropped to below 22°C, entering the cool autumn. "Every autumn rain brings a chill." When cold air moving south meets the gradually weakening warm and humid air, it will rain. After each rain, the temperature will drop again and again. |
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