January 15, 2026 · a reference winter day
Greensburg
Standard: sunrise 7:39 AM, sunset 5:15 PM.
Scenario: sunrise 8:39 AM, sunset 6:15 PM.
Both clock times move one hour later. The morning darkness tradeoff is part of this choice. Approximate times; same amount of daylight.
Change date or compare views →Pittsburgh
Standard: sunrise 7:41 AM, sunset 5:16 PM.
Scenario: sunrise 8:41 AM, sunset 6:16 PM.
Both clock times move one hour later. The morning darkness tradeoff is part of this choice. Approximate times; same amount of daylight.
Change date or compare views →Philadelphia
Standard: sunrise 7:21 AM, sunset 4:58 PM.
Scenario: sunrise 8:21 AM, sunset 5:58 PM.
Both clock times move one hour later. The morning darkness tradeoff is part of this choice. Approximate times; same amount of daylight.
Change date or compare views →What this guide establishes
This explains geography and clock policy, not the status of any state bill. BTS describes federal authority and exceptions. NIST describes observance. Consult the federal tracker for verification limits.
Reviewed 2026-11-02. Census coordinates; NOAA algorithm; IANA time zones. Sources and caveats.