How many dog days are there, and how many dog days are there

40 days. "Three dog days" is a collective term for the beginning, middle and end of the year, and it is the hottest time of the year. It occurs every year from mid-July to mid-August in the solar calendar.

A period of time from the third day after the summer solstice to the day before the fourth day of the summer solstice. The third Geng day is the first day of the first ambush. The period of time before the fourth Geng day after the middle volt, the second volt, and the summer solstice to the first Geng day after the beginning of autumn 3.

The fourth Geng day is set as the first day of the beginning of the middle volley, and if the autumn is established before the seventh lunar month, the middle volt is 10 days. If the autumn is established after the seventh lunar month, it will be 20 days.

The period of time from the first day of the day after the end of the autumn to the day before the second day of the day. The second Geng day is set as the end of the Futian.

In summer, people have long activity time, sweating and consumption, so they should eat more nutritious foods such as chicken, duck, lean meat, fish, and eggs to meet the metabolic needs of the human body.

Seasonal vegetables such as lettuce, cucumbers, tomatoes, etc., have a higher water content in summer. Fresh fruits, such as peaches, apricots, watermelons, melons, etc., have a water content of 80 to 90%, which can be used to replenish water.

There are 40 dog days in 2022:

Shoufu (Shoufu): July 16, 2022 - July 25, 2022, a total of 10 days.

V (Medium Voltage): July 26, 2022 - August 14, 2022, 20 days.

Dog days: August 15, 2022 - August 24, 2022, a total of 10 days.

This year's 2022 dog days have 40 days, starting on July 16, the first day of dog days, and ending on August 24.

Reasons why dog days are different every year:

It mainly depends on the start time of the last voltage. Usually the first onset of illness begins on July 11 and takes about 10 days; Zhongfu begins on July 21, that is, the fourth Geng day, and if the fifth Geng day is before the beginning of autumn, it still belongs to Zhongfu. The starting time of Fu is the first Geng day after the beginning of autumn.

This year, the fifth Geng sunset falls on July 31, while the beginning of autumn falls on August 7. After this day of the beginning of autumn, the first Geng day is August 10. So the first 10 days of the year, the middle 20 days, and the last 10 days, so it's 40 days in total.

As the saying goes, "Thirty-nine days are cold, thirty-nine days are hot." "In winter, we know that March 9 is the coldest time, with snow and ice, and biting winds. In the summer, the weather is very hot, the temperature is getting higher and higher, and the hottest time is on the dog days.

However, the midstream and midstream are the hottest, and the weather gradually cools down at the end of the midstream, especially in the morning and evening. Of course, the remaining strength of the Autumn Tiger cannot be underestimated and is inevitable.

There is no fixed number of dog days, he has a formula for calculating them.

Dog days, one dog day is ten days, which is calculated according to the number of tens of the heavenly stem. Therefore, the division of dog days is: the third day of the heavenly stem after the summer solstice, which is the beginning day of the first dog day.

For example, the summer solstice in 2006 is June 21 of the Western calendar year, and the heavenly stem day of this day is the Xin day, and after 28 days, it is the third Geng day, so July 20, 2006, is the beginning of the first volt; Ten days later, it was another Geng day, that is, on July 30, and it entered the second volt; Ten days later, there was another Geng day, and it was the first Geng day after the beginning of autumn, that is, August 9, which entered the third volt; If it is 2007, July 15 is the third Geng day, which is the beginning of the first volt (first volt); Ten days later, it was another Geng day, that is, on July 25, and it entered the second volt (middle volt); Ten days later, it is another Geng day, but it has not yet passed the beginning of autumn, and after ten days (there are 20 days in the middle of this year), it is another Geng day, and it is the first Geng day after the beginning of autumn, that is, on August 14, it has entered the third volt. That is to say, after the dog days of each year, it is very hot, especially the ten (sometimes twenty days) of the middle of the dog days, which are the hottest. There is a folk saying that "the cold is in Sanjiu, and the heat is in the middle".

21st Century Heart Algorithm - Geng Day Formula: GR = (D - Y 4]) mod 10 (GR Geng Day, D even number year 1 singular year 6, Y year, [ rounding, mod remainder)

Initial GR plus 10 (except for 2084), medium GR +20, and 9 when the last GR is greater than 7 minus 1 and less than 8 (2096 exception minus 1), e.g. 2006 GR = (1 - 6 4]) mod 10 = 0 (10), July 20, 30 days, and August 9.

July 18 is the first day of the head and the first 10 days.

July 28 is the first day of the dog days, and the 10 days of the dog days.

August 7 is the first day of dog days, and the dog days are 10 days.

Please look for the first one the fastest, thank you!

Satisfied! I don't know the details of dog days very well, see the encyclopedia for details.

From the third "Geng" day after the summer solstice, the first volt is 10 days, the middle volcanic is 10 days or 20 days, and the last volcanic is 10 days, generally a total of 30 days.

Dog days are the hottest days of the year, and they are the hottest and humid and hot days of the year. Fu means latent. The "volt" of "dog days" refers to "evil spirits".

That is, the so-called "six evils" of the summer evil. The so-called "Fu Tian'er" refers to the "dog days" of the lunar calendar, that is, the hottest period of the year.

After the ambush, the surface humidity becomes larger, the heat absorbed every day is more, the heat emitted is less, and the heat of the surface layer accumulates, so it gets hotter and hotter day by day. In addition, there is a lot of rain in summer, the air humidity is high, and the heat capacity of water is much greater than that of dry air, which is also an important reason for the hot and humid weather. In July and August, the subtropical high strengthened, and under the control of the subtropical high, the downdraft inside the high pressure made the weather clear and cloudless, which was conducive to sunlight exposure, and the ground radiation warmed, and the weather became hotter.

The traditional Chinese solar terms divide the year into 24 solar terms, of which the summer solstice, the small heat and the big heat are collectively called the "three dog days" or "three plum birds". The summer solstice is the first of the dog days, around June 20 every year; Xiaoxiao is the second solar term, which is around July 7 every year; Great heat is the third solar term, which occurs around July 22 every year. Therefore, according to the traditional Chinese solar terms, the total number of dog days is the number of days from the summer solstice to the great heat, usually about 25 days.

We hope you find it helpful.