In 12 AD he made himself Pontifex Maximus, the chief priest of Rome and head of the Collegium Pontificum, the highest priests in the land. These initiatives were very popular. To many Romans ...

Cue Pope Gregory XIII, the Pontifex Maximus of the Catholic church at the time. In 1582 he gave us the Gregorian calendar, which modified the Julian Calendar to account for the 11.2-minute drift.

In 12 AD he made himself Pontifex Maximus, the chief priest of Rome and head of the Collegium Pontificum, the highest priests in the land. These initiatives were very popular. To many Romans ...