The entire Christian calendar is based on a miscalculation, the Pope has declared, as he claims in a new book that Jesus was born several years earlier than commonly believed.
The 'mistake' was made by a sixth century monk known as Dionysius Exiguus or in English Dennis the Small, the 85-year-old pontiff claims in the book 'Jesus of Nazareth: The Infancy Narratives', published on Wednesday.