Who knows how many volts there will be in this year's hot summer?

On July 6th, 20021,16, the summer heat began and the dog days lasted for 40 days.

The so-called three volts is the floorboard of the initial, middle and final volts. The date of the dog days is determined according to the date of the solar term and the date of the dry branch. According to the provisions of the lunar calendar, the interval between two adjacent Geng days is ten days, so the time from the first lie to the middle lie is fixed at ten days.

However, because the first Geng Day after beginning of autumn is the last day, there are two situations from the middle to the last day: ten days and twenty days. The last ambush was fixed for ten days as the first ambush.

The dog days are the time when the temperature is the highest and it is humid and sultry all year round.

The time of "ambush" is calculated according to the date of solar terms and the date of dry support, and it should be counted from "Geng Day". The temperature is the highest, and the latent time needs to be from summer to the next 20 days. The traditional algorithm "dog days" starts from summer to the third Geng day in the future and ends on the second Geng day after beginning of autumn.

The climate in dog days is characterized by "high temperature, high humidity and high fever", because the southeast wind blows in dog days, the air is humid, and the humidity of the wind causes the humidity to be high from hot summer to hot summer in dog days. This kind of weather occurs in the south of China.