Entry time in 2020 Entry time in 2020: July, 2020/KOOC-Thursday, 0/6 (May 26th in the Year of the Rat).
In 2020, the dog days will be divided into initial, intermediate and final days, with ***40 days, as follows:
Initial appearance: July 2020 16 (May 26th) to July 25th, 2020 (June 5th).
Zhongfu: July 26th, 2020 (June 6th of the lunar calendar) ~ August, 202014th (June 25th of the lunar calendar).
Last days: August 2020 15 (June 26th) to August 24th, 2020 (July 6th).
2020 entry time: July 16, 2020, and it will last until August 24, 2020.
The dog days are the hottest 30 or 40 days in a year in the Central Plains. The dog days are calculated according to the lunar calendar, and they are between the middle and late July and the early August of the solar calendar. The time of lodging is not fixed every year, and the length of lodging is also different. In short, from the third "Geng" day after the summer solstice, the initial lodging is 10 day, the middle lodging is 10 day or 20 days, and the last lodging is 10 day.
The date of the dog days is from the summer solstice to the third Geng day, which is the first lie, the fourth Geng day to the fifth Geng day is the middle lie, and the first Geng day to the second Geng day after beginning of autumn is the last lie. (Every Geng day is 10 day apart) The number of midsummer days is not fixed. There are four Geng days between the summer solstice and beginning of autumn, and the midsummer days are 10 days. When there are five Geng days, the midsummer days are 20 days.
In classical Chinese, V means latent. The "crouching" of "dog days" refers to "crouching evil", that is, the so-called "six evils" (referring to "wind, cold, summer heat, dampness, dryness and fire"). In summer, summer evil will gradually lurk deep in the body without being known. If summer evil is not removed, in autumn, fire evil will kill gold, which will hurt lung qi, leading to the decline of people's immunity, and suffer from colds, coughs, fever and other diseases. After entering the winter, these diseases will recur. Autumn is sarcoidosis, and there are few harvesters, and the winter solstice is seriously ill. "
Therefore, it is clearly pointed out in the Yellow Emperor's Canon that you should "vent your anger if you love it outside". Don't hide in an air-conditioned room for fear of sweating. Cold drinks can't get rid of the summer heat, but will hurt the spleen and stomach. You know, tea is the best drink to relieve summer heat. Although a cup of hot tea will sweat a little, it will be followed by a burst of coolness. You can't just look at the present, but look farther.
Why does the humidity of the surface become larger after the heat enters the volt, and the heat absorbed every day is more, but the heat emitted is less, and the heat on the surface of the ground accumulates, so it gets hotter every day, and when it enters the dog days, the accumulated heat on the ground reaches its peak, and the weather is the hottest. In addition, there is much rain in summer, the air humidity is high, and the heat capacity of water is much larger than that of dry air, which is also an important reason for the sultry weather. In July and August, the subtropical high intensified. Under the control of the subtropical high, the downward flow inside the high pressure made the weather sunny and partly cloudy, which was conducive to sunlight, and the ground radiation warmed up, making the weather even hotter.
Is it not hot after going out? Generally speaking, going out means going out in the dog days, and the heat gradually disappears; The summer solar term represents the end of the summer heat, and the weather should be getting cooler and cooler. However, in some areas in the south, people who just feel a little cool in autumn often feel the hot weather again at the end of the summer, which is the legendary autumn tiger.
The reason for the formation of the autumn tiger is that the western Pacific subtropical high, which controls China, gradually moves southward in autumn, but moves northward. Under the control of this high pressure, it is sunny in partly cloudy, with strong solar radiation and rising temperature. Due to China's vast territory, the performance of the "autumn tiger" is slightly different. For example, the autumn tiger in South China is later than that in the Yangtze River basin, and it is generally delayed by 2-4 festivals.
In addition, the control time of autumn tigers is long or short every year, ranging from half a month to two months; Sometimes autumn tigers come and go, go and look back. Gu Tieqing, the author of Qing Jia Lu, said: "After the local customs have spent the summer heat, the weather is still cloudy, and it will take about 18 days to cool down;" As the saying goes, eighteen pots of summer heat means eighteen days of bathing. " It means about eighteen days of sweating. However, although the weather in "Autumn Tiger" is relatively high, the air is dry and sunny on the whole, and it is not very hot in the morning and evening, so it will not be too hot to breathe.