National Institute of Standards and Technology | NIST
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OFFICIAL U.S. TIMEUnited States Naval Observatory

Non-Contiguous U.S. and Territories
Alaska Standard Time
AKST (UTC-9)
Alaska Map
Aleutian Standard Time
HAST (UTC-10)
Hawaii Standard Time
HST (UTC-10)
Hawaii Map
Samoa Standard Time
SST (UTC-11)
Chamorro Standard Time
CHST (UTC+10)
Puerto Rico
Atlantic Standard Time
AST (UTC-4)
 
Pacific Standard Time
PST (UTC-8)
Mountain Standard Time
MST (UTC-7)
Central Standard Time
CST (UTC-6)
Eastern Standard Time
EST (UTC-5)
Arizona Mountain
Standard Time
MST (UTC-7)
United States Time Zone Map

Coordinated Universal Time (UTC)

UTC is always displayed as a 24-hour clock.

Your Device's Clock UTC-0




Your clock is off by:
s

Puerto Rico
Atlantic Standard Time
AST (UTC-4)
About/Contact FAQ
Hashed image for Daylight Saving Time not observed = DAYLIGHT SAVING TIME NOT OBSERVED

Clocks are corrected for network delay