When is the dog days?

Three volts are divided into initial, middle and final volts.

There is an extremely difficult time in summer, which we call dog days. The dog days are divided into three sections, the first section, the second section and the last section. The dog days are layered, and the weather will increase with each dog day. When it is in the middle, the temperature will peak.

When is the dog days?

The dog days, which appear between Xiaoshu and beginning of autumn, are the days with the highest temperature, humidity and sultry weather in a year. The so-called "dog days" refers to the "dog days" of the lunar calendar, which is the hottest period of the year.

It can be understood as "squatting" means that the weather is too hot to move. But the dog days are called "dog days" because there are also many cold factors. The dog days are the hottest thirty or forty days in a year in the Central Plains. The dog days are calculated according to the lunar calendar, between the middle and late July and the early August of the solar calendar.

According to China's calendar, the first day is the beginning of a real summer. People often say: heat is at three volts, and cold is at three or nine. Dog days are the season with the highest temperature and humidity in a year, which can be divided into three days: the first, middle and last days, in which the first and last days are fixed as 10 days, some years are 10 days, and some years are 20 days.

At the beginning of the incubation period, it is called entering or alternating, and at the end of the incubation period, it is called appearing. Lodging days depend on lodging time, generally before July 28th, lodging for 20 days, lodging 10 days.

When is the dog days?

The time of accommodation is not fixed every year, and the length of accommodation is also different. You need to check the almanac to calculate it. Simply put, we can use the formula of "Xia San Geng" to express the lodging date, that is, from the third Geng day in Xia Hou, the initial lodging is 10 day, the intermediate lodging is 10 day or 20 days, and the final lodging is 10 day. In ancient China, the "trunk-branch calendar" was popular, and 60 groups of different names were used to record dates with 10 heavenly stems and 12 earthly branches, which were recycled.

How to calculate the delay?

In the lunar calendar used in China, there is a "branch calendar", which uses 10 for "heavenly stems" (A, B, C, D, E, G, Xin, Ren, Gui) and "earthly branches" (Zi, Ugly, Yin, Mao, Chen, Si, Wu).

According to the provisions of the Law on Ganzhi Day, the date of the dog days is from the solstice of summer to the third Geng Day, which is the first lodging, the fourth Geng Day to the fifth Geng Day is the middle lodging, and the first Geng Day to the second Geng Day after beginning of autumn is the last lodging. Every Geng day is 65,438+00 days apart, and the number of mid-festival days is not fixed. There are four Geng days from summer solstice to autumn, with 65,438+00 days in the middle, five Geng days and 20 days in the middle.

Which volt is the hottest in dog days?

In general, the mid-range temperature is the highest and hottest.

Summer solstice is the tropic of Capricorn, and the sunshine time is the longest in summer. But the accumulation of heat on the earth is lagging behind.

Just like the highest temperature in a day is not 12 at noon, but 14 at the back, and the lowest temperature is not 12 at midnight, but 4 am.

After the summer solstice, the days get longer and the nights get shorter. Every day, the heat absorbed during the day is more than the heat emitted at night, which makes the ground temperature higher every day and accumulates in the middle, reaching the peak, which is the hottest time.

After midsummer, the length of day and night changes again, so it is not as hot as midsummer. Everything has a process of occurrence, development, climax and ending, and the dog days are no exception.

As the saying goes, "practice three or nine in winter, keep three days in summer", and you really should pay attention to protect yourself in dog days. The dog days are lurking, so be quiet and don't move.