The twenty-first day of November.
- 165 BC.: Judah Maccabee orders the Temple to be cleansed. Jews celebrate this occasion as Hanukkah.
- 1855: Felician Sisters, O.S.F. founded on this day.
- 1964: Pope Paul VI signes the Unitatis Redintegratio (Restoration of Unity), the Second Vatican Council's Decree on Ecumenism.
- Albert of Louvain
- Gelasius I
- Honorius, two saints with this name
- Presentation of the Blessed Virgin
- Rufus of Rome