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| YEAR | DATE | EVENT | PRESIDENT | PRIME MINISTER |
| 1960 | 26 june | Republic | Philibert Tsiranana | |
| 1972 | 18 may | gen. Gabriel Ramanantsoa | ||
| 1972 | 11 october | gen. Gabriel Ramanantsoa | ||
| 1975 | 5 february | col. Richard Ratsimandrava | vacant | |
| 1975 | 12 february | col. Gilles Andriamahazo | ||
| 1975 | 15 june | amm. Didier Ratsiraka (I) |