What will the first day of hiding pictures begin in 2020?

You may be interested in: health knowledge, four benefits of moxibustion in dog days.

What started on the first day of the dive in

What will the first day of hiding pictures begin in 2020?

You may be interested in: health knowledge, four benefits of moxibustion in dog days.

What started on the first day of the dive in 2020: from July 16.

1, initial stay 10 day: June 16 in Gregorian calendar (May 26th in lunar calendar) to July 25th, 2020 (fifth day in June in lunar calendar);

2. Mid-crouching for 20 days: July 26, 2020 (the sixth day of the sixth lunar month) to August 2020 14 (the 25th lunar month);

3. The last date is 10 day: August 15, 2020 (June 26th of the lunar calendar) to August 24th, 2020 (sixth day of the seventh lunar month).

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Calculation method of dog days

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. 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. The day with the word "Geng" is called "Geng Day". The word "Geng" in Geng Day is the seventh word in "A, B, C, D, E, Ji, G, Xin, Ren, Gui" 10 day, and it is repeated every 10 day.

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Starting from the summer solstice, according to the date of trunk, 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 the beginning of autumn, the middle part is 10 days, and when there are five Geng days, the middle part is 20 days. It seems that the emergence of Gengri will affect the length of the first half sooner or later, so there will be 30 days in some years and 40 days in some years.