 | 2002 | 2003 | 2004 |  |
Date | Commemoration | Type | Anniversary |
| 01.03 | Final Apparition of Our Lady of Beauraing (1933) | Marian Apparition | 70 years |
| 01.15 | First Apparition of Our Lady of Banneux (1933) | Marian Apparition | 70 years |
| 01.25 | Promulgation of Canon Law Codex Iuris Canonici (1983) | Papal Document | 20 years |
| 02.07 | Death of Pope Pius IX (1878) | Pope | 125 years |
| 02.11 | Establishment of the Catholic hierarchy in Russia (2002) | Church Event | 1 year |
| 02.20 | Election of Pope Leo XIII (1878) | Pope | 125 years |
| 02.21 | Creation of Jorge Bergoglio as Cardinal (2001) | Pope | 2 years |
| 03.02 | Final Apparition of Our Lady of Banneux (1933) | Marian Apparition | 70 years |
| 03.05 | Death of Joseph Stalin (1953) | Person | 50 years |
| 03.14 | Establishment of the Catholic hierarchy in Namibia (1994) | Church Event | 9 years |
| 03.25 | Establishment of the Catholic hierarchy in Kenya, Tanzania and Uganda (1953) | Church Event | 50 years |
| 03.25 | Encyclical Evangelium vitæ (1995) | Papal Document | 8 years |
| 04.10 | Signing of the Good Friday Agreement of Northern Ireland (1998) | World Event | 5 years |
| 04.11 | Encyclical Pacem in terris (1963) | Papal Document | 40 years |
| 05.05 | Opening of the Second Council of Constantinople (553) | Ecumenical Council | 1450 years |
| 05.12 | May 1998 anti-Chinese riots of Indonesia (1998) | World Event | 5 years |
| 05.25 | Encyclical Ut unum sint (1995) | Papal Document | 8 years |
| 05.29 | Fall of Constantinople (1453) | World Event | 550 years |
| 06.02 | Closing of the Second Council of Constantinople (553) | Ecumenical Council | 1450 years |
| 06.21 | Election of Pope Paul VI (1963) | Pope | 40 years |
| 07.02 | Motu Proprio Ecclesia Dei (1988) | Papal Document | 15 years |
| 07.06 | First Apparition of Our Lady of Akita (1973) | Marian Apparition | 30 years |
| 07.20 | Death of Pope Leo XIII (1903) | Pope | 100 years |
| 07.25 | Encyclical Humanæ vitæ (1968) | Papal Document | 35 years |
| 07.27 | End of the Korean War (1953) | World Event | 50 years |
| 08.04 | Election of Pope Pius X (1903) | Pope | 100 years |
| 08.06 | Encyclical Veritatis splendor (1993) | Papal Document | 10 years |
| 08.18 | Death of Pope Alexander VI (1503) | Pope | 500 years |
| 08.26 | Election of Pope John Paul I (1978) | Pope | 25 years |
| 08.29 | Weeping of Our Lady of Tears of Syracuse (1953) | Marian Apparition | 50 years |
| 09.14 | Encyclical Fides et ratio (1998) | Papal Document | 5 years |
| 09.22 | Election of Pope Pius III (1503) | Pope | 500 years |
| 09.28 | Episcopal consecration of Pope John Paul II (1958) | Pope | 45 years |
| 09.28 | Death of Pope John Paul I (1978) | Pope | 25 years |
| 10.09 | Death of Pope Pius XII (1958) | Pope | 45 years |
| 10.16 | Election of Pope John Paul II (1978) | Pope | 25 years |
| 10.18 | Death of Pope Pius III (1503) | Pope | 500 years |
| 10.22 | Installation of Pope John Paul II (1978) | Pope | 25 years |
| 10.22 | Founding of the Vatican Television Centre (1983) | Church Event | 20 years |
| 10.28 | Election of Pope John XXIII (1958) | Pope | 45 years |
| 10.29 | Establishment of the Republic of Turkey (1923) | World Event | 80 years |
| 11.01 | Election of Pope Julius II (1503) | Pope | 500 years |
| 11.19 | Death of Franz Schubert (1828) | Person | 175 years |
| 11.22 | Motu Proprio Tra le sollecitudini (1903) | Papal Document | 100 years |
| 11.22 | Assassination of John F. Kennedy (1963) | World Event | 40 years |
| 12.04 | Conciliar Constitution Sacrosanctum concilium (1963) | Conciliar Document | 40 years |
| 12.04 | Conciliar Decree Inter mirifica (1963) | Conciliar Document | 40 years |
| 12.27 | Episcopal consecration of Pope John Paul I (1958) | Pope | 45 years |
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