A movie called “Dog Days Afternoon ” starring Al Pacino in lead role was released in 1975. It is about a bank heist which doesn’t go as planned. What does the phrase mean?
Dictionary defines it as very hot days during July and August. It means it refers to the bad patch in life of a person.
It doesn’t have to do anything to the dogs. It refers to the Dog Star or Sirius which is the shiniest and largest star in the Canister Major constellation. During these hot months it adds to the heat from sun as it is in the same part as sun in northern hemisphere.
So it also refers to inactivity or stagnation due to problems in the life.