Historedia
Person

Pope Gregory XIII

Events
3
Episodes
3
Years
1582–1584

Every event in Historedia whose sources name Pope Gregory XIII, with the role they cite and all of that event’s episodes. This is not a biography, and mentions are grouped by name, so two people with the same name can share this page.

Events and episodes

  1. France's Adoption of the Gregorian Calendar

    1582

    Role: Issuer of Reform

    1. 9–20 December 1582 · FranceDecember 1582 Calendar Shift

      France transitioned to the Gregorian calendar in December 1582, with 9 December followed by 20 December.

  2. Implementation of the Gregorian Calendar by Pope Gregory XIII

    1582

    Role: Issuer of the papal bull and head of the Catholic Church

    1. 24 February 1582 · Papal StatesIssuance of Inter gravissimas

      Pope Gregory XIII issued the papal bull Inter gravissimas on 24 February 1582, formally instituting the Gregorian calendar as a replacement for the Julian calendar.

  3. Establishment of the Maronite College

    1584

    Role: Confirmed the college via papal bull

    1. 5 July 1584 · RomeOfficial Launch

      The Maronite College of Rome was officially launched on 5 July 1584.

Sources

  1. Gregorian calendar Wikipedia, revision of 2026-09-11
  2. Pope Gregory XIII Wikipedia, revision of 2026-07-11
  3. Pontifical Maronite College Wikipedia, revision of 2026-06-16