# Gregorian calendar (1582)

URL: https://christianity-history.com/timeline/1582-gregorian-calendar
Location: Rome
Themes: Papacy

Pope Gregory XIII reforms the calendar. At this point in the timeline (1582), the Bishop of Rome was Pope Gregory XIII (13 May 1572 – 10 April 1585).

## Why it matters
Gregorian calendar mattered because it shaped the authority, policy or public role of the papacy and the Catholic Church.

Pope at the time: [Pope Gregory XIII](https://christianity-history.com/popes/pope-gregory-xiii)

## Sources
- [Wikipedia — Gregorian calendar](https://en.wikipedia.org/wiki/Gregorian_calendar)
- [Encyclopaedia Britannica topic lookup — Gregorian calendar](https://www.britannica.com/search?query=Gregorian+calendar)
- [Wikipedia — Reformation (period overview)](https://en.wikipedia.org/wiki/Reformation)