When is bliss and how to calculate it?

This year's competition time is July 20th.

/CMA _ new/qxkp/qx ysh/t 2006 06 27 _ 137 169 . phtml

Why is it late this year?

I entered the city on July 20th this year, just like in 2004, a few days later than the normal year. Entered the city in July 2005 15, July 2003 1 1, July 2002 16, July 2000 1.

If you want to know the date of the ambush, you must first be familiar with China's unique "discipline of cadres and party branches".

China used to record the year, month, day and time with "heavenly stems" and "earthly branches" in ancient times. Heavenly stems and earthly branches is a Chinese character used to record order in ancient China. Tianganyou 10, that is, we are familiar with A, B, C, D, E, Ji, G, Xin, Ren and Gui; There are 12 earthly branches, that is, people use them to record the children, ugliness, yin, Mao, Chen, Si, Wu, Wei, Shen, You, Xu and Hai of 12 genus. Put 10 aerial trunk and 12 aerial trunk together for recycling in sequence. * * * can be matched with 60 pairs of non-repetition, such as Jiazi, Russian cloth, Bingyin, etc. The last pair is Guihai. Then start all over again and recycle. These 60 pairs are what people often call "sixty flowers"; People often use "sixty years old" to describe the age of a 60-year-old person.

Remember the day of the dry branch is to mark every day of the lunar calendar with the dry branch. For example, June 20th this year (May 25th of the lunar calendar) is "Chen Geng" day, and 2 1 is "Xinsi" day. According to the calendar, the day when the third Geng day of the annual summer solstice (June 2 1 or 22) begins is the day when the first autumn begins. The so-called Gengzi Day refers to the day when the word Gengzi appears, such as Gengzi Day and Gengyin Day. Because there are 10 days, there will be a Geng day every 10 days. On June 2 1 this year, Chen Geng was the day before summer, and the first Geng Yin after summer was June 3 1 day. The second Geng Day (Geng Zi) is in July10; The third Geng Festival (Geng Xu) is July 20th. The formula of "Xia San Gengzi" can be used to determine the lodging date, that is, from the date of summer, the third Gengzi is the lodging date. This year is July 20, and it began to fall.

If the summer solstice falls on Geng Day, then the dive time of this year is early, such as in 2000 and 2002, and it will dive on July 1 1 day. If the day before catching up with summer is Geng Day, and the first Geng Day after summer is the farthest from summer, then this year will fall later, such as 2006 and 2004.

By the way, why are the days of the year not fixed? The first lodging (lodging) days refer to 10 days from summer to the third and fourth Geng days in the future; The number of Mid-Autumn Festival days refers to the fourth Geng Day from summer to the first Geng Day after beginning of autumn (10 or 20 days). The doomsday refers to 10 days from the first Geng day to the second Geng day after beginning of autumn. Because there are *** 10 days, there is a Geng day every 10 days, so the initial and final lodging time is fixed at 10 days. However, the incubation time is not fixed, some years are 10 days, and some years are 20 days. Because Geng Day occurs every 10 day, and a year is 365 or 366 days, which is not an integer multiple of 10, the date of Geng Day is different every year. In the 47 days from summer solstice to autumn, there may be 4 shifts or 5 shifts. If there are 4 Geng days, the median is 10 days; If there are five Geng days, the period from summer to the fourth Geng day in the future to the first Geng day after beginning of autumn is 20 days. (Wang Feng 'an)