Date | Commemoration | Type | Anniversary |
| 01.01 | Establishment of the Catholic hierarchy in Myanmar (1955) | Church Event | 75 years |
| 01.01 | Establishment of the Catholic hierarchy in Zimbabwe (1955) | Church Event | 75 years |
| 01.07 | Death of Pope Innocent X (1655) | Pope | 375 years |
| 01.12 | Earthquake at Port-au-Prince (2010) | World Event | 20 years |
| 02.13 | Death of Sister Lúcia dos Santos, Fatima visionary (2005) | Person | 25 years |
| 02.18 | Discovery of Pluto (1930) | World Event | 100 years |
| 02.21 | Death of Pope Benedict XIII (1730) | Pope | 300 years |
| 03.03 | Death of Pope Clement VIII (1605) | Pope | 425 years |
| 03.23 | Death of Pope Julius III (1555) | Pope | 475 years |
| 03.25 | Encyclical Evangelium vitæ (1995) | Papal Document | 35 years |
| 03.29 | Rededication of England as the Dowry of Mary (2020) | Church Event | 10 years |
| 04.01 | Election of Pope Leo XI (1605) | Pope | 425 years |
| 04.02 | Death of Pope John Paul II (2005) | Pope | 25 years |
| 04.07 | Election of Pope Alexander VII (1655) | Pope | 375 years |
| 04.09 | Election of Pope Marcellus II (1555) | Pope | 475 years |
| 04.15 | First Apparition of Our Lady of Cuapa (1980) | Marian Apparition | 50 years |
| 04.18 | Establishment of the Catholic hierarchy in Nigeria, Ghana, Cameroon and Sierra Leone (1950) | Church Event | 80 years |
| 04.19 | Election of Pope Benedict XVI (2005) | Pope | 25 years |
| 04.27 | Death of Pope Leo XI (1605) | Pope | 425 years |
| 05.01 | Death of Pope Marcellus II (1555) | Pope | 475 years |
| 05.01 | Rededication of USA and Canada to Mary, Mother of the Church (2020) | Church Event | 10 years |
| 05.01 | Dedication of Italy to the Immaculate Heart of Mary (2020) | Church Event | 10 years |
| 05.13 | Birth of Pope Innocent XIII (1655) | Pope | 375 years |
| 05.16 | Election of Pope Paul V (1605) | Pope | 425 years |
| 05.23 | Election of Pope Paul IV (1555) | Pope | 475 years |
| 05.25 | Encyclical Ut unum sint (1995) | Papal Document | 35 years |
| 06.05 | Establishment of the Secretariat on Christian Unity (1960) | Church Event | 70 years |
| 06.25 | Beginning of the Korean War (1950) | World Event | 80 years |
| 06.30 | Establishment of the Pontifical Council for the Promotion of the New Evangelization (2010) | Church Event | 20 years |
| 07.12 | Election of Pope Clement XII (1730) | Pope | 300 years |
| 07.18 | First Apparition of Our Lady of the Miraculous Medal (1830) | Marian Apparition | 200 years |
| 09.04 | Establishment of the Catholic hierarchy in Mozambique (1940) | Church Event | 90 years |
| 09.14 | Establishment of the Catholic hierarchy in Cote d’Ivoire, Central African Republic, Guinea, Gabon, Congo-Brazzaville, Mali, Madagascar, Chad and Togo (1955) | Church Event | 75 years |
| 10.03 | German Reunification Day (1990) | World Event | 40 years |
| 10.13 | Last Apparition of Our Lady of Cuapa (1980) | Marian Apparition | 50 years |
| 10.15 | Rededication of Cologne Cathedral (1880) | Church Event | 150 years |
| 10.30 | Birth of Pope Clement XIV (1705) | Pope | 325 years |
| 10.31 | Terrorist Attack on Syriac Cathedral of Our Lady of Salvation (2010) | World Event | 20 years |
| 11.01 | Definition of the Dogma of the Assumption of the Blessed Virgin Mary (1950) | Church Event | 80 years |
| 11.01 | Beginning of the Vietnam war (1955) | World Event | 75 years |
| 11.07 | Opening of the Third Council of Constantinople (680) | Ecumenical Council | 1350 years |
| 11.07 | Dedication of the Basilica of the Holy Family, Barcelona (2010) | Church Event | 20 years |
| 11.24 | Establishment of the Catholic hierarchy in Vietnam (1960) | Church Event | 70 years |
| 11.27 | Final Apparition of Our Lady of the Miraculous Medal (1830) | Marian Apparition | 200 years |
| 11.30 | Death of Pope Pius VIII (1830) | Pope | 200 years |
| 12.25 | Encyclical Deus caritas est (2005) | Papal Document | 25 years |
| 12.31 | Encyclical Casti connubii (1930) | Papal Document | 100 years |
