| date | entity | event | name |
|---|---|---|---|
| 20/05/1998 | city | date founded | Saint-Jacques, Quebec |
| 20/05/2002 | former country | data end | United Nations Transitional Administration in East Timor |
| 20/05/1948 | former country | data end | Nationalist government |
| 20/05/1883 | eruption | date | 1883 eruption of Krakatoa |
| 20/05/1975 | flag | date Adopted | Flag of the Republic of Venice |