Multiple choice general knowledge Harry and Neville Longbottom have the same birthday and it is on June 30 July 31 Aug 31 Sep 30 Reveal answer Fill a bubble to check yourself B Correct answer Explanation Both Harry Potter and Neville Longbottom were born on July 31, making them potentially the subject of the same prophecy. This date is also J.K. Rowling's birthday. Their shared birthday is a key plot point connecting the two boys.