| date | entity | event | name |
|---|---|---|---|
| 18/12/2013 | operating system | date released | KDE Software Compilation 4 |
| 18/12/0208 | operating system | date released | ZevenOS |
| 18/12/1996 | organization | date founded | Institut National de la Statistique de Côte d'Ivoire |
| 18/12/1936 | organization | date founded | Klio |
| 18/12/1967 | organization | date founded | National Park Foundation |