When is the dog days in summer?

202 1 dog days in July11-August 19. The dog days appear between the light summer heat and the heavy summer heat, which is the period with the highest temperature, humidity and sultry degree in a year. Three volts can be divided into initial volts, intermediate volts and final volts, and its date is determined by the coordination of the 24 solar terms and the date of the main branch. The dog days of summer in 2002 1 are from July1day to August 19, of which the first day is July1day and July1day to 2002/day. Zhongfu: July +0, 20265438, July +0, 20265438-August 9, 20265438, totally 20 days; Terminal: 2021August 10-2021August 19, totaling10 days.