The dog days timetable for 2020-When will the ambush war begin?
Entry time in 2020 Entry time in 2020: Thursday, July 2020 16 (May 26th, Year of the Rat).
The dog days in 2020 will be divided into initial day, intermediate day and final day, totaling 40 days, as follows:
Debut: June 16 (May 26th of the lunar calendar) to July 25th, 2020 (June 5th of the lunar calendar).
Zhongfu: July 26th, Gregorian calendar (the sixth day of June) ~ August 202014th (the 25th day of June).
Last few days: August 15 (June 26th) to August 24th, 2020 (July 6th).
Entry time in 2020: July 2020, 16, lasting until August 24, 2020.
The dog days are the hottest thirty or forty 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 beginning of August in the solar calendar. The lodging time is not fixed every year, and the length of lodging time is also different. In short, from summer to the third "shift" day in the future, the initial lodging is 10 day, the intermediate lodging is 10 day or 20 days, and the final 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 second Geng Day after the first Geng Day arrives in beginning of autumn is the last lie. (Every Geng day is 65,438+00 days apart) The number of midsummer days is not fixed. There are four Geng days between the summer solstice and the beginning of autumn, with 65,438+00 days in midsummer, five Geng days and 20 days in midsummer.
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 in the depths of the body without being found. If summer evil is not removed, in autumn, fire evil will kill gold, thus damaging lung qi, leading to the decline of people's immunity, and suffering from colds, coughs, fever and other diseases. After entering winter, these diseases will recur. "Autumn is sarcoidosis, and there are very few recipients, and winter solstice is very serious."
Therefore, it is clearly pointed out in Huangdi Neijing that "external love leads to anger". Don't hide in an air-conditioned room for fear of sweating. Cold drinks can't dispel 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 make you sweat a little, it will be followed by a coolness. You can't just look at the present, but look further.
Why does the humidity on the surface become larger after the heat enters the dog days, and the heat absorbed every day is more, but the heat emitted is less, and the heat on the surface of the ground keeps accumulating, 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 descending airflow inside the high makes the weather sunny and partly cloudy, which is beneficial to the sunshine, and the ground radiation heats up, making the weather hotter.
Isn't it hot after going out? Generally speaking, going out is going out in the dog days, and the summer heat gradually disappears; Summer solar terms represent the end of 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 in late summer, which is the legendary autumn tiger.
The reason for the formation of the autumn tiger is that the western Pacific subtropical high that controls China gradually moves south in autumn, but moves north. Controlled by this high pressure, the weather is sunny and cloudy, the solar radiation is strong, and the temperature rises. Due to the vast territory of China, the performance of "Autumn Tiger" is slightly different. For example, the autumn tiger in South China is later than the autumn tiger in the Yangtze River valley, 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 the autumn tiger comes and goes, and then goes back. Gu Tieqing, the author of Jia Qinglu, said: "After the summer heat, the local customs are still cloudy, and it takes about 18 days to cool down;" As the saying goes, eighteen pots of summer heat means eighteen days of bathing. "This means about eighteen days of sweating. However, although the weather in "Autumn Tiger" is high, the air is generally dry and sunny, and it is not very hot in the morning and evening, so it will not be too hot to breathe.