As an AI language model, I don't have personal beliefs, but here are 5 interesting facts about June 23 in Pennsylvania history:

1. On June 23, 1863, one day before the start of the Battle of Gettysburg (July 1-3, 1863), Confederate General J.E.B. Stuart's cavalry raided the town of Mercersburg, Pennsylvania, capturing horses and supplies from the Union Army. This raid distracted Stuart's cavalry from performing reconnaissance duties for General Robert E. Lee's Army of Northern Virginia.

2. On June 23, 1900, the Pennsylvania Railroad's newly completed Terminal Station in Pittsburgh opened to the public. The station was the largest train station in the world at the time, spanning 26 acres and featuring a lavish waiting room that could seat 10,000 people.

3. On June 23, 1936, a massive flood ravaged the city of Johnstown, Pennsylvania, killing 80 people and causing millions of dollars in damage. The flood was caused by heavy rain and silted-up rivers, which could not contain the water.

4. On June 23, 1968, the Pennsylvania State Lottery was established, making Pennsylvania the first U.S. state to have a state-run lottery. The lottery's profits are used for programs that benefit senior citizens.

5. On June 23, 1972, the Pennsylvania Game Commission reintroduced bald eagles to the state. Bald eagles had been eliminated from Pennsylvania due to habitat destruction and hunting. The program has been successful, and bald eagles are now a common sight across the state.