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

The first day of 1 and 202 1 is July 1 1, which means dog days. "Summer solstice, the first fall of three Geng", which is the basis of establishing autumn.

2. Initial accommodation: 20265438+July 0165438+July 20-20265438+July 20, 0, for a total of 10 days.

3. Mid-range: July +0, 20265438, July +0, 20265438-August 9, 20265438, totally 20 days.

4. Terminal: 2021August 10-2021August 19, for a total of10 days.