Who Created The Modern Calendar

Who Created The Modern Calendar. Every four years, leap days are added to achieve this. It was written in 1488 by a theologian from the university of louvain named peter de rivo and suggested 10 days be removed from the calendar.

Here is a detailed history of how the modern calendar came into existence. The romans created the julian calendar and the catholic church created the gregorian calendar and in fact named it after pope gregory xiii.