What is the dog days of 202 1? How can there be two accommodation times of 202 1?

The dog days of 202 1 are from July to August. The dog days, which appear between the hot summer and the hot summer, are the days with the highest temperature, humidity and sultry weather in a year. The "crouching" in "dog days" refers to "crouching evil", which is the so-called "six evils" in summer evil.

The dog days are the hottest, humid and sultry days of the year, which occur between the hot summer and the hot summer. As the saying goes, "heat is in three volts", which means that Yin Qi is forced to hide underground by Yang Qi. "Three volts" is a general term for the first, middle and last three volts, which appears from mid-July to mid-August in the solar calendar every year.

202 1 dog days plan

202 1 Early dispatch time: July11-July 20th.

Sleeping time in 202 1 year: July 21-July 30.

202 1 leap mid-autumn festival time: July 31-August 9.

202 1 End: August10-August 19.

How can there be two dive times in 202 1 year?

At present, there are two versions of 202 1, one is 202 1 July, and the other is 202 11July. This is related to the algorithm "Summer Solstice Three Gengzi", which is the third Gengri from the summer solstice.

Because the summer solstice of 202 1 falls on June 2 1 day, this day is the boxer day of Wu Jiayue in the calendar. If this day is also called "Boxer Day", then the accommodation time is 2021July 1 1. Gengri refers to the day when the word "Gengzi" is used to support auspicious days.

As for why some people on the internet think that the entry time is July 2 1? The reason is that they skipped the summer solstice and didn't count it as the first Geng day, so it was delayed by 10 days, but this algorithm is not accurate, because it is also related to calculating the number of mid-term days between Geng day and the summer solstice to beginning of autumn. If it is skipped, the mid-term time will be inaccurate.

Dog days calculation method

The dog days are calculated according to the lunar calendar in China. In ancient China, time was recorded through the combination of heavenly stems and earthly branches. The number of heavenly stems is 65,438+00 and the number of terrestrial branches is 65,438+02. "Three Geng" met three "Geng" characters, the first time was on the third Geng Day.

Because there are 10 days, there is a Geng day every 10 days. 365 days a year (366 days in leap year) is not an integer multiple of 10. One day this year is Geng Day, and next year is not necessarily Geng Day. Due to the uncertainty of Geng day, the date of accommodation is different every year.

What food should I avoid in dog days?

1, spicy temperature: The hot weather in dog days will lead to the increase of internal heat in human body. If you eat some spicy and warm food, it will add fuel to the fire, and you may feel bored, anxious and thirsty easily, so eat some sweet or cold food.

2, cold stimulation: hot and sweaty in the dog days, the human pores are in a state of expansion. Eating cold and irritating food suddenly will make the body quickly close the pores, hinder the discharge of sweat, and block the hot air in the body, which is not conducive to sweating and heat dissipation. In the long run, there will be the possibility of congestion.

What food do you eat in dog days?

Summer is hot and humid, suitable for cleaning.

It's hot in dog days, so eating more cold drinks will easily lead to the invasion of moisture, which will cause weakness of the spleen and stomach, have a certain impact on the digestive system of the human body and reduce appetite. It is suggested that you can eat some sour and sweet foods in dog days, such as peaches, plums, pineapples, celery and olives. And try not to eat cold, spicy and irritating food, so as not to harm human health.

In cooking techniques, you can try to choose cold salad and stir-frying, which can not only promote digestion, increase appetite, but also retain the nutrition of food to the greatest extent.