When do you start counting volts?

Start counting volts on July 16, 2022.

The specific time of the Dog Days in 2022:

The Dog Days in 2022 will start on July 16 and end on August 24, lasting 40 days.

The time to enter the burrow is not fixed every year, and the length of the burrow in the middle is also different. It needs to be calculated by checking the almanac. The four-character formula "Three Watches of the Summer Solstice" can be simply used to express the date of entry into the cave, that is, counting from the third "Gen" day after the summer solstice, the first period is 10 days, the middle period is 10 or 20 days, and the last period is 10 days. In ancient my country, the "recording of stems and branches" method was popular in ancient times. 10 days were matched to form 60 groups of different names. The stems and 12 ground branches were used to record the days, which were recycled.

Any day with the word "geng" is called "geng day". The character "Geng" on Geng Day is the seventh character among "A, B, B, D, Wu, Ji, Geng, Xin, Ren, Gui" in the Ten Heavenly Stems, which is repeated every 10 days.

Starting from the summer solstice, according to the arrangement of stems and branches, the third Geng day is the positive day, the fourth Geng day is the middle day, and the first Geng day after the beginning of autumn is the last day. From the summer solstice to the beginning of autumn, the fourth day is 10 days, and the fifth day is 20 days. It seems that the sooner or later Geng Day will affect the length of Zhongfu, so some years have 30 days of Futian, and some years have 40 days of Futian.