0 1, start and end time

Initial stage: from July 20231day to July 20, 2023, with a total of *** 10 days; Midrange: July 2, 20231day to August 9, 2023, with a total of ***20 days; Last days: from August 2023 10 to August 2023 19, with a total of *** 10 days. On the whole, the dog days in 2023 will have 40 days. As we all know, the number of dog days in a year is not fixed.

In fact, the first and last days are fixed 10 days, but there is a certain gap in the time of middling. Some years may be 20 days, but others may be 10 days.

The dog days are between the light summer heat and the summer heat, and the temperature is the highest in a year, and the weather is very sultry, which will give people a feeling of dampness and discomfort. If you are an elderly friend or a person with poor physique, you must be vigilant during this time and put your health in the first place 1.

02, how to calculate the summer solstice three Geng Fu?

From the beginning of the summer solstice, the date when the third name contains "Geng" is calculated, and the third Geng day is the time when the first fall begins.

As long as we can calculate the time of going in and out of the sky according to the chronology of the main branches, we can also get ready to enter the dog days in advance and do a good job of moisturizing and hydrating.

Sangeng is a sign that the dog days stipulated in China's lunar calendar have begun. The word Geng in Geng Day means the seventh of the ten heavenly stems: A Tiangan, B Tiangan, C Tiangan, Ding Tiangan, E Tiangan, Ji Tiangan, Geng Tiangan, Xin Tiangan, Ren Tiangan and Gui Tiangan. Geng Day can be repeated every ten days, and a Geng Day will appear every ten days.

Because the time of Geng Day is different every year, it is impossible to divide 10 exactly in 365 days of a year, so this year's Geng Day is not necessarily next year's Geng Day, so it is said that the time of falling into the ground is also different, which requires calculation and judgment.