| date | entity | event | name |
|---|---|---|---|
| 20/09/1911 | newspaper | date Ceased publication | El Ferrocarril |
| 20/09/1910 | team | date Foundation | C.S. Marítimo |
| 20/09/1982 | protected area | date founded | Serra Negra Biological Reserve |
| 20/09/1982 | protected area | date founded | Sooretama Biological Reserve |
| 20/09/1982 | protected area | date founded | Córrego do Veado Biological Reserve |