| date | entity | event | name |
|---|---|---|---|
| 08/09/1999 | city | date founded | Sainte-Martine, Quebec |
| 08/09/1962 | nuclear weapons test | date begin | Operación Tyulpan |
| 08/09/1940 | observatory | date founded | High Altitude Observatory |
| 08/09/1961 | protected area | date founded | Fort Davis National Historic Site |
| 08/09/2005 | organization | date founded | People's Consultative Group |