What is the first day of 202 1? What is the first day of 202 1?

The first day of 1 and 202 1 is July 1 1, and ends on July 20th after the summer solstice of the third year, totaling ten days.

2. "Lodging", also known as "prostration" or "prone", refers to the day from the third Geng day after the summer solstice to the day before the fourth Geng day, which is the beginning of real summer.

3. Generally speaking, the surface humidity will become higher after entering the ground. Every day, the ground absorbs more heat, but emits less heat. The heat on the surface of the earth accumulates, so it gets hotter every day.