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| YEAR | DATE | EVENT | GOVERNOR |
| 1978 | 9 january | Commonwealth of USA | Carlos S. Camacho |
| 1982 | 11 january | Pedro Pangelinan Tenorio (I) |
|
| YEAR | DATE | EVENT | GOVERNOR |
| 1989 | 4 july | ||
| 1990 | 9 january | Lorenzo I. De Leon Guerrero | |
| 1990 | 12 december | End of U.S. Trust Administration | |
| 1994 | 9 january | Froilan Cruz Tenorio |
| YEAR | DATE | EVENT | GOVERNOR |
| 1995 | 4 july | ||
| 1998 | 12 january | Pedro Pangelinan Tenorio (II) | |
| 2002 | 14 january | Juan Nekai Babauta | |
| 2006 | 9 january | Benigno R. Fitial | |
| 2013 | 20 february | Eloy S. Inos | |
| 2015 | 30 december | Ralph Torres | |
| 2023 | 9 january | Arnold Palacios |