On what day in 2020, it began to decline.

In 2020, it began to be uniformed on July 16 (May 26th of the lunar calendar) and ended on August 24th, 2020.

There are initial voltage, intermediate voltage and final voltage. The preliminary round 10 days, the intermediate round 20 days and the final round 10 days, totaling 40 days. The temperature is the highest during the dog days, with little rain and very hot weather.

1. Pay attention to heatstroke prevention and sun protection in dog days, and exercise properly;

2. Drinking plenty of water in dog days is good for physical and mental health, because the increase of perspiration in summer helps to balance body temperature and improve immunity;

3. Pay attention to a balanced diet, maintain physical and mental pleasure, and ensure adequate sleep.