It has recently been brought to my attention that the first chapter of the entire series has a continuity error. As we probably all know very well it starts with Mr. and Mrs. Dursley, of number four, Privet Drive, were perfectly normal, thank you very much. The chapter describes Vernons day where he meets some weirdos who celebrate Voldy Moldys death BUT at this point Harry hasn't arrived yet. According to Hagrid the night Harry came he picked the Baby up before the Muggles could and flew right to Little Whinging. So there is a 24 hour span where we don't know what Baby Harry was doing. Was he in the ruins of his parents house? Was Sirius' Motorcycle just incredibly super slow?