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| YEAR | DATE | EVENT | HEAD OF STATE | PRIME MINISTER |
| 1949 | 18 april | Republic | Sean Thomas O'Kelly | John Aloysius Costello (I) |
| 1951 | 13 june | Eamon de Valera (II) | ||
| 1954 | 2 june | John Aloysius Costello (II) | ||
| 1957 | 20 march | Eamon de Valera (III) | ||
| 1959 | 24 june | Eamon de Valera | Sean Francis Lemass | |
| 1966 | 10 november | John Mary "Jack" Lynch (I) | ||
| 1973 | 14 march | Liam Cosgrave | ||
| 1973 | 24 june | Erskine Hamilton Childers | ||
| 1974 | 19 december | Cearbhall O Dalaigh | ||
| 1976 | 3 december | Patrick John Hillery | ||
| 1977 | 5 july | John Mary "Jack" Lynch (II) | ||
| 1979 | 11 december | Charles James Haughey (I) | ||
| 1981 | 30 june | Garret FitzGerald (I) | ||
| 1982 | 9 march | Charles James Haughey (II) | ||
| 1982 | 14 december | Garret FitzGerald (II) | ||
| 1987 | 10 march | Charles James Haughey (III) | ||
| 1990 | 3 december | Mary Robinson | ||
| 1992 | 11 february | Albert Reynolds | ||
| 1994 | 15 december | John Gerard Bruton | ||
| 1997 | 26 june | Patrick "Bertie" Ahern | ||
| 1997 | 11 november | Mary McAleese | ||
| 2008 | 7 may | Brian Cowen | ||
| 2011 | 9 march | Enda Kelly | ||
| 2011 | 11 november | Micheal Daniel Higgins | ||
| 2017 | 13 june | Leo Varadkar (I) | ||
| 2020 | 27 june | Micheál Martin | ||
| 2022 | 17 december | Leo Varadkar (II) |