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What's the first day of the first day? 2020: July 16.

Initial appearance: July, 2020 16 (May 26th)-July 25th, 2020 (the fifth day of June).

Zhongfu: July 26, 2020 (the sixth day of the sixth lunar month)-August 14, 2020 (the 25th day of the sixth lunar month).

Last days: August 2020 15 (June 26th)-August 24th, 2020 (sixth day of July).

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Climatic characteristics in dog days

The climate of "dog days" is characterized by high temperature, low air pressure, high humidity and low wind speed, which is the hottest season of the year, and the "bitter summer" mentioned by the folk people is at this time.

In order to spend the "bitter summer" safely, remind everyone: pay attention to replenish water, drink enough cold water, supplement mung bean soup, sour plum soup or electrolyte-containing drinks, and prepare some commonly used heatstroke prevention and cooling drugs when necessary;

Try to avoid outdoor work in strong sunlight, especially in high temperature in the afternoon. If outdoor work or activities are necessary, take sun protection measures;

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Incubation time

The time of lodging is not fixed every year, and the length of lodging is also different, so it is necessary to look up the almanac to calculate. Simply, we can use the formula of "Summer Solstice Three Geng" to indicate the date of lodging, that is, from the third Geng day after the summer solstice, the initial lodging is 10 day, the middle lodging is 10 day or 20 days, and the final lodging is/. In ancient China, the "trunk-branch calendar method" was popular, and 60 groups of different names matched by 10 heavenly stems and 12 earthly branches were used to record dates and recycle them. Every day with the word Geng is called Geng Day. The word "Geng" in Gengri is the seventh word in "A, B, C, D, E, Ji, Geng, Xin, Ren and Gui" 10, and it is repeated every 10 day. Starting from the summer solstice, according to the arrangement of the trunk and branch dates, the third Geng day is the first, the fourth Geng day is the middle, and the 1 th Geng day after beginning of autumn is the last. When there are four Geng days between the summer solstice and beginning of autumn, the midsection is 10 days, and when there are five Geng days, it is 20 days. It seems that the emergence of Geng Day will affect the length of midsection sooner or later, so there are cases in which it will be 30 days in some years and 40 days in some years.