The exact date of Remus Lupin's birth is not explicitly stated in the Harry Potter books. However, based on information provided throughout the series, we can deduce that he was born sometime in January 1960.
Here's how we arrive at this conclusion:
- Lupin's age in Prisoner of Azkaban: In Prisoner of Azkaban, Remus Lupin is described as being 31 years old. This event takes place in 1993, placing his birth year around 1962.
- Lupin's school year: Lupin attended Hogwarts from 1971 to 1978. This means he would have been born between 1959 and 1962.
- Lupin's friendship with James, Sirius, and Peter: Lupin's close friendship with James Potter, Sirius Black, and Peter Pettigrew suggests they were born around the same time. James and Sirius are confirmed to have been born in 1960, further solidifying the possibility of Lupin's birth year being 1960.
While we cannot definitively confirm the exact date, the available information strongly suggests that Remus Lupin was born in January 1960.