Traditional Culture Encyclopedia - Weather forecast - 2065 438+07. 6. 20 What four words did you do?
2065 438+07. 6. 20 What four words did you do?
Gregorian calendar 2065438+June 2 1 is the summer solstice, but the volt number does not start from the summer solstice, but from July 12, 20 17. The date of dog days is from summer solstice to the third Geng day, which is the first volt, and the fourth Geng day to the fifth Geng day is the first Geng day after beginning of autumn.
July 2065438 12 to July 20654381day, that is, the first 17.
From July 22nd, 20 17 to August, 2065 438+07, there are 20 days in the middle.
2011August 2007 ~ 2065438+August 20, 2007 is the last 10 day.
In 20 17, it entered the ambush from July 12 (the third year of the summer solstice), and began to lie in the middle on July 22, ending on August 10, staying in the middle for 20 days, 40 days in dog days, and 2 1 sunrise on August.
How much common sense do you know in dog days?
The "fu" in the hottest dog days of the year refers to the "fu evil", that is, the summer evil in the "six evils" of traditional Chinese medicine (referring to "wind, cold, summer heat, dampness, dryness and fire"). The so-called "dog days" refers to the "dog days" of the lunar calendar, which is the hottest period of the year.
Why is it the hottest? Guang Yuyuan's health experts believe that because the surface humidity becomes higher after entering the volt, more heat is absorbed every day, less heat is emitted, and the heat on the ground accumulates, so it gets hot every day and enters the volt, and the heat accumulation on the ground reaches its peak, and the weather is the hottest. In addition, there is much rain and high air humidity in summer.
The heat capacity of water is much larger than that of dry air, which is also an important reason for the sultry weather. In addition, it is partly cloudy and sunny in July and August, which is beneficial to sunlight, ground radiation heats up and the weather is even hotter.
On June 38+03 this year, the time to enter the ambush is not fixed every year, and the length of the ambush is also different. It can only be worked out by consulting the almanac, and the date of ambush can be simply expressed by the formula of "three Geng on the summer solstice"
That is, from the summer solstice to the Sunday, according to the date of trunk, the third Geng day is the first, the fourth Geng day is the middle, and the 1 Geng day after beginning of autumn is the last. When there are four Geng days between the summer solstice and the beginning of autumn, the middle part is 10 days, and when there are five Geng days, the middle part is 20 days.
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