| date | entity | event | name |
|---|---|---|---|
| 04/04/1980 | roller coaster | date Opened | Corkscrew (Alton Towers) |
| 04/04/2011 | newspaper | date Ceased publication | Günlük |
| 04/04/1991 | conflict | data start | 1991 Sacramento hostage crisis |
| 04/04/1616 | operating system | date released | Mac OS X Server 1.0 |
| 04/04/1894 | organization | date founded | Good Shepherd Sisters: Omaha Order |