| date | entity | event | name |
|---|---|---|---|
| 21/08/1965 | former country | data end | République populaire roumaine |
| 21/08/2008 | file system | date released | HAMMER (file system) |
| 21/08/2008 | file system | date released | HAMMER2 |
| 21/08/2006 | newspaper | date founded | OC Post |
| 21/08/1991 | conflict | data start | 1991 Soviet coup d'état attempt |