Does All of Pennsylvania Have the Same Time?
Yes. All 67 Pennsylvania counties use Eastern Time. Philadelphia and the Delaware Valley, Pittsburgh and Western Pennsylvania, Harrisburg and the Susquehanna Valley, Erie, the Poconos, the Lehigh Valley and every other region change between EST and EDT together.
This is especially useful for western Pennsylvania. Pittsburgh and Erie sit far west geographically, yet neither is in Central Time. Crossing the Ohio border also does not change the clock because Ohio is statewide Eastern Time.
67 countiesEvery Pennsylvania county follows the same official Eastern Time rules.
Philadelphia = PittsburghEastern and western Pennsylvania share the same clock throughout the year.
No in-state zone lineYou never change official time zones simply by traveling within Pennsylvania.
Is Pennsylvania Ending the Twice-Yearly Time Change?
No change is in force as of August 20, 2026. Pennsylvania continues to follow the current U.S. daylight-saving schedule, moving to EDT in March and returning to EST in November.
In the 2025–2026 General Assembly, Senate Resolution 46 petitioned Congress to end the biannual time change and establish a uniform, year-round time system. The Pennsylvania Senate adopted the resolution 47–2 on March 26, 2025, and it was transmitted as directed on April 8, 2025. The resolution did not itself alter Pennsylvania civil time, so the Commonwealth still observes seasonal EST/EDT transitions.