Are the days and nights the same length on the autumnal equinox? Introduction to the phenological phenomena of the autumnal equinox
The Autumnal Equinox is one of the 24 solar terms. So, let’s take a look at whether the day and night are the same length during the Autumnal Equinox? Did you know? The eighth month of the lunar calendar is also known as Guiyue, Zhuangyue, Zhongqiu, Nangong, and Zhongshang. Let’s learn with Shuimoxiansheng.com what we need to pay attention to in this special eighth month of the lunar calendar in 2021!Are the days and nights the same length on the autumnal equinox?Yes, the autumnal equinox is a day when day and night are equal.From the perspective of meaning: the "fen" in Autumnal Equinox means "half". There is an old saying: "During the Autumnal Equinox, yin and yang are equal, so the day and night are equal and the cold and heat are balanced." This refers to the natural phenomenon that during the Autumnal Equinox, the day and night are equal in length. Starting from the summer solstice, the daytime hours in the Northern Hemisphere will gradually become shorter, while the night time will gradually become longer. But the daytime is generally longer than the nighttime. On the autumnal equinox, the day and night are equally long. After the autumnal equinox, the days in the Northern Hemisphere gradually become shorter and the nights become longer, so that the total daytime is less than the nighttime. Therefore, on the day of the autumnal equinox, the day and night are of equal length. Introduction to the phenological phenomena of the autumnal equinoxThe ancient Chinese divided the Autumnal Equinox into three stages: the first stage is when the thunder begins to subside; the second stage is when the hibernating insects begin to hatch; and the third stage is when the water begins to dry up.1. The ancients believed that thunder was caused by the abundance of Yang energy. After the Autumnal Equinox, Yin energy began to flourish, so thunder no longer occurred. Therefore, thunder not only marks the end of summer, but also the beginning of autumn cold; Second, as the weather gets colder, the hibernating insects begin to hide in their holes and seal the hole entrances with fine soil to prevent the cold air from invading; 3. Due to the dry weather, water vapor evaporates quickly, so the amount of water in lakes and rivers becomes less, and some swamps and puddles become dry. |
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