What's the date of 202 1? What is the exact date of 202 1?

When did 1 and 202 1 enter the city? At present, there are two opinions about the time of entering the city in 202 1, one is entering the city in 2021July and the other is entering the city in 2021/July. This is related to the algorithm of "Xia San Geng Day", which is the third Geng Day since summer.

2. Because the summer solstice of 202 1 falls on June 2 1 day, this day is Wu Jiayue's boxer day according to the calendar. If this day is also Boxer Day, then the accommodation time is July 1 1. Gengri refers to the day when the word "Gengzi" is used to support auspicious days.

3. If uniforms are started on July 2 1 and 202 1, then the dog days are the initial uniforms: July 21-July 30; Zhongfu: July 31-August 9; Terminal: August10-August 19. In this algorithm, the dog days last for 30 days.

4. If July 1, 202 1 1 is the first day of dive, then the initial dive time is July11-July 20th; Mid-range: July 21-August10; Terminal: August10-August 19. In this algorithm, the dog days last for 40 days.

After the summer solstice, it is divided into initial, intermediate and final stages, usually from mid-July to mid-August, which is the hottest time of the year. The length of accommodation in dog days is not fixed every year, and the length of accommodation is also different.