| date | entity | event | name |
|---|---|---|---|
| 20/11/2002 | eruption | date | Eksplozja w Riobamba |
| 20/11/1890 | encyclical | date | Catholicae ecclesiae |
| 20/11/2014 | file format | date released | DivX |
| 20/11/1996 | fire | date | Garley Building fire |
| 20/11/1990 | protected area | date founded | Parco territoriale attrezzato Fiume Fiumetto |