I know you all love a good Harry Potter fan theory!
A Quora-user by the name of Yedu Krishnan has noticed one small detail that perhaps most of us overlooked when we read the Harry Potter books. A detail that suggests Professor Trelawney might not be such a bad prophet after all.
During Divination class with Professor Trelawney, she takes a guess towards Harry's birth month.
"I think I am right in saying, my dear, that you were born in midwinter?"
Harry replies : "No, I was born in July."
Now that may seem like another one of Trelawney's failed predictions, but in the last book, we learn that Harry was one of Voldemort horcruxes.
When was Voldemort born? December 31st, or Midwinter. So it is entirely possible that Trelawney sensed Voldemort's presence in Harry, and that's why she mixed up the dates.
I have to say, it kind of makes sense, but there's not really any way to prove this. Personally I think J.K. Rowling added that as comic relief, but until we hear from the Potter Queen herself we won't know for sure. In the meantime, check out this clip of Professor Trelawney being particularly creepy while predicting the return of Voldemort: