| Year | Month | Day | Event |
|---|---|---|---|
| 1681 | Mar | 04 | Charles II Grants Penn Land Charter |
| 1682 | Aug | 24 | Penn Adds Delaware To Pennsylvania Colony |
| 1682 | Oct | 27 | Philadelphia, Pennsylvania Is Founded |
| 1777 | Sep | 27 | Lancaster, Pennsylvania Capital For One Day |
| 1778 | Jun | 18 | American Revolution: British Abandon Philadelphia |
| 1803 | Aug | 31 | Lewis And Clark Start Expedition |
| 1842 | Aug | 01 | Lombard Street Riot Erupts In Philadelphia |
| 1887 | Feb | 02 | Punxsutawney, PA First Groundhog Day |
| 1907 | Dec | 19 | Pennsylvania Explosion Kills 239 Coal Miners |
| 1926 | Jul | 04 | Pennsylvania Opens An Amusement Resort |