| date | entity | event | name |
|---|---|---|---|
| 23/02/2013 | file format | date released | TOML |
| 23/02/1997 | conflict | data start | 1997 Empire State Building shooting |
| 23/02/2009 | protected area | date founded | Fylde Memorial Arboretum and Community Woodland |
| 23/02/1992 | championship edition | date end | 1992 Winter Olympics |
| 23/02/2009 | organization | date founded | Interface:2010 |