| date | entity | event | name |
|---|---|---|---|
| 20/01/1980 | organization | date founded | Polish Karate Federation |
| 20/01/1970 | organization | date founded | Reception of J. R. R. Tolkien#United Kingdom |
| 20/01/1853 | organization | date founded | Royal Photographic Society |
| 20/01/1976 | organization | date founded | Centre national de la recherche scientifique et technologique |
| 20/01/2009 | organization | date founded | Desertec |