When is the big ups and downs this year?

This year's ups and downs are July 1 1.

First of all, the ups and downs of summer actually refer to the first day of the dog days. As we all know, in ancient times, people divided summer into several periods according to the degree of hot weather. And from a scientific point of view, there is a certain scientific basis, so ancient people are smart and wise. We all know that the dog days are the hottest time of the year, and many people are anxious at this time, because the weather is very hot. The first day of the dog days, also called the first day of the dog days, is actually what people often say about ups and downs.

Secondly, the ups and downs are generally on the third Geng day after summer and also on the third Geng day in summer. This is also a traditional solar term, which means that summer will officially come, and then our life will enter a hot summer. And the ups and downs usually last for ten days. In these ten days, the weather is hot, but the degree is not very deep. Therefore, according to the passage of time, the next days will get hotter and hotter.

Introduction to dog days

The dog days appear between the slight summer heat and the severe summer heat (from mid-July to mid-August in Gregorian calendar), and the dog days are divided into three days: the beginning, the middle and the end. Dog days are characterized by high temperature, low air pressure, high humidity and low wind speed. "crouching" means being forced to hide underground; This also means that it is too hot to move. The date of the dog days is determined by the coordination of 24 solar terms and the date of the main branch. Because every Geng day is 10 days apart, the stipulated time of the first day and the last day is 10 days.

Because the third Geng Day (the first autumn) after long summer appeared sooner or later, the days of autumn were long and short. The dog days are the hottest, wettest and sultry time of the year. The reason why the air humidity is high in dog days is that the southeast wind blows in dog days, while the southeast is the ocean and the air is humid. The humidity of the sea breeze leads to the high humidity in dog days.

The above contents refer to Baidu Encyclopedia-Dog Days.