Tag: Pope Gregory XIII
-
Ten Days That Vanished: The Switch to the Gregorian Calendar
BY The Editors of Encyclopaedia Britannica When it comes to calendars, small errors can add up over time. The Julian calendar—the prevalent calendar in the Christian world for the first millennium CE and part of the second millennium—was an improvement over the Roman republican calendar that it replaced, but it was 11 minutes and 14 seconds longer than the…