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| YEAR | DATE | EVENT | GOVERNOR |
| 1903 | 18 november | U.S. Territory | |
| 1904 | 14 may | George Whitefield Davis | |
| 1905 | 24 may | Charles Edward Magoon | |
| 1906 | 19 november | Richard R. Rogers | |
| 1907 | 19 november | Joseph Clay Styles Blackburn | |
| 1910 | 13 may | Maurice Hudson Thatcher | |
| 1913 | 9 august | Richard Lee Metcalfe | |
| 1914 | 1 april | George Washington Goethals | |
| 1917 | 11 january | Chester Harding | |
| 1921 | 28 march | Jay Johnson Morrow | |
| 1924 | 16 october | Meriwether Lewis Walker | |
| 1928 | 16 october | Harry Burgess | |
| 1932 | 21 october | Julian Larcombe Schley | |
| 1936 | 27 august | Clarence Eugene Ridley | |
| 1940 | 11 july | Glen Edgar Egerton | |
| 1944 | 16 may | Joseph Cowles Mehaffey | |
| 1948 | 20 may | Francis Cosler Newcomer | |
| 1952 | 27 may | John States Seybold | |
| 1956 | 28 may | William Everett Potter | |
| 1960 | 1 july | Willaim Aarnold Carter | |
| 1962 | 1 february | Robert John Fleming | |
| 1967 | 21 february | Walter Philip Leber | |
| 1971 | 3 march | David Stuart Parker | |
| 1975 | 26 march | Harold R. Parfitt | |
| 1979 | 1 october | Panama territory administrated by USA | Dennis P. McAuliffe |
| 1990 | 1 january | Fernando Manfredo, Jr. | |
| 1990 | 20 september | Gilberto Guardia Fabrega | |
| 1996 | 18 august | Alberto Alemán Zubieta | |
| 2000 | 1 january | Panama territory |