| date | entity | event | name |
|---|---|---|---|
| 21/03/2001 | game | date released | ESPN Final Round Golf 2002 |
| 21/03/1991 | flag | date Adopted | Vlag van Praag |
| 21/03/1967 | team | date Foundation | Ateneo Cultural y Deportivo Don Bosco |
| 21/03/1988 | organization | date founded | Gamma Phi Delta (fraternity) |
| 21/03/1957 | organization | date founded | Hungarian Young Communist League |