| date | entity | event | name |
|---|---|---|---|
| 04/10/1956 | team | date Foundation | ASV Arkel |
| 04/10/2000 | organization | date founded | Idealista.com |
| 04/10/1985 | organization | date founded | Free Software Foundation |
| 04/10/1958 | organization | date founded | Constitutional Council (France) |
| 04/10/1899 | organization | date founded | G.T.S.V. Voetius |