What is what zone is philadelphia?

Philadelphia is located in the Eastern Time Zone (ET) in the United States. This time zone is 5 hours behind Coordinated Universal Time (UTC-5). Philadelphia follows daylight saving time, moving the clock forward one hour in the spring and back one hour in the fall. The city is in the Eastern Standard Time (EST) during the non-daylight saving months and Eastern Daylight Time (EDT) during daylight saving time.