What do you mean, dog days? Which dog days do you mean?

Among the 24 solar terms, one that many of us hate is the dog days, because the temperature on this day will be very high and sultry.

What do you mean dog days?

Dog days are summer, which usually appear from mid-July to mid-August. The dog days appear between Xiao Shu and beginning of autumn, which is the highest temperature, humid and sultry day in a year. According to the lunar calendar, the dog days are roughly between mid-July and early August in the solar calendar, lasting for 3 days or 4 days, and are divided into initial, middle and last days. From the perspective of the lunar calendar, the third "Geng Day" after the summer solstice enters the initial stage (also known as the first stage), and generally enters the last day of the "last stage" about ten days after beginning of autumn, and the dog days end. Therefore, there is a saying that "the third year of the summer solstice enters the dog days, and the autumn continues to add a volt". After lodging, the humidity of the ground surface becomes larger, and the heat absorbed every day is more, but the heat emitted is less, and the heat on the ground surface is accumulated. Therefore, it is getting 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.

what are the dog days?

The dog days refer to the first, middle and last days.

1. First crouching

First crouching means officially entering the dog days. According to the old tradition, first crouching is the beginning of the real summer days. The initial lodging is fixed at 1 days, and the initial lodging starts from the third Geng day after the summer solstice (called lodging).

2. Midnight

The time period between the first and last days is Midnight, but this concept is too abstract. If it is difficult to judge, you can also look at the old calendar. Midnight also refers to the period from the fourth Geng Day after the summer solstice to the day before the first Geng Day after beginning of autumn. There are 3 days and 4 days in the middle.

3. The first Geng Day after the last fall

beginning of autumn is the last fall. The last stay is fixed at 1 days, which also means from the first Geng Day after beginning of autumn to the day before the second Geng Day (* * * 1 days).

when does the dog days start?

An old saying in rural areas often says, "There are three days in winter and three days in summer", which is the most marked weather in summer, and the simplest understanding of "crouching" is "staying still", and staying at home in a rainy day is the best way to spend summer. In our country, "crouching" refers to a kind of "heat evil". In the past, people were most prone to plague in these dog days, so they were considered as the most dangerous weather.

And since there is the saying of the dog days, naturally there is an algorithm to calculate the beginning and end of the dog days, so that people can be prepared artificially. This is reflected in the wisdom of the ancients.

On the arithmetic of dog days in a calendar book, it is written that "the summer solstice is three Geng", that is, the third Geng day after the summer solstice, and it enters the dog days. And this will use the old-fashioned lunar calendar in our countryside, with the heavenly stems and earthly branches discipline of the days on it. Specifically, you can also search the lunar calendar. The summer solstice in 22 is on June 21, that is, the first day of May. From this point on, the sixth day of May is the first Geng Day, the seventh day of May is the second Geng Day, and the 26th day of May is the third Geng Day. That is to say, on July 16, the first day of this year's dog days began.

and the weather in recent days has made me feel like I'm asleep, wet and hot, which is really uncomfortable. Because the Meteorological Center has already reported that the weather from the first half of June will be dominated by rainfall. So the rainy weather in the south has never stopped, and the scope of the rain has gradually expanded, and our southern Anhui has also been affected. It has been raining for three whole days today, but the temperature has not decreased, and it will enter the rainy season in a while, and the climate may be even worse.

Although the dog days are just a folk saying, and the time will be different from year to year, it at least shows when the hottest month in summer started. Although there is no scientific basis, it is not bad, which is the experience accumulated by our ancients.

What should we pay attention to in dog days?

The most important thing to pay attention to in dog days is the safety of outdoor bathing: there are many ways to prevent heatstroke and cool down, among which people's favorite method is to take a bath in the wild. Here, I especially remind you to pay special attention to the wild bath in heatstroke prevention. Some people ignore the warnings of the relevant departments, think that they are good at water, don't care, and happily take their families, children, or relatives, neighbors and friends to take a bath in unfamiliar seas and rivers.

these people hurried to the seaside and looked at the sea, excited. Willy-nilly, a plunge into the water; Others, like jiaozi, dived into the water. Enjoy the coolness of the sea. Some snorkeling, some treading water, some backstroke, some dog planing, are really eight immortals crossing the sea, showing their magical powers. There was a lot of joking and fighting on the sea. At this time, the seemingly calm sea is actually surging in the undercurrent. Being good at water is a bit presumptuous and swims to the depths of the sea. Swimming to the unknown undercurrent, it seems that the waves are not big, but as a result, there is no figure. If you meet a local water-based one, there is still the possibility of survival. If, all half-shelf, why worry. The living see people gone! This is a sad scene in Dalian sea area! It hurts.

Therefore, no matter whether you are good or bad at swimming, you should pay attention to safety first, and never be paralyzed.