This feast celebrates Peter’s leadership and the unity of the Church under the Pope. The “chair” in this feast is not just a ...

Following 20 years of research and consultation, Pope Gregory XIII signed a papal bull in February 1582, ordering that the new calendar would be brought into effect on October 5 of that year.

This culminated in the publication of an amended edition in 1582. Gregory’s dragon Pope Gregory lived at a time when emblematic and symbolic interpretations were central to the political and ...

Pope Gregory XIII issued an edict outlining his calendar reforms. (The Gregorian Calendar is the calendar in general use today.) ...