Current Local Time and Time Zones in United States

Explore current local time, official time zones, and daylight saving transitions for United States, located in North America. The administrative capital is Washington, D.C., operating primarily under the America/New_York standard reference.

The United States spans six primary time zones across the contiguous states, Alaska, and Hawaii. Daylight Saving Time is observed in most states with exceptions in Arizona and Hawaii. Whether you are coordinating business meetings, tracking flight schedules, or making international phone calls, our atomic clock provides live synchronization for all major cities and municipalities across United States.

National Time Zone Overview

Property Value Notes
Country United States ISO code: US
Capital City Washington, D.C. Government and financial center
Primary Timezone America/New_York Official IANA zone designation
Daylight Saving Time Yes, seasonal clock shift observed Maintains uniform offset year-round

Cities in United States

Compare United States with Other Countries

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