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Master American Time
Like Never Before

The definitive resource for understanding, tracking, and converting time across all six U.S. time zones.

Live Time Across America

Eastern
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UTC-5 / UTC-4 (DST)
Central
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UTC-6 / UTC-5 (DST)
Mountain
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UTC-7 / UTC-6 (DST)
Pacific
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UTC-8 / UTC-7 (DST)
Alaska
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UTC-9 / UTC-8 (DST)
Hawaii
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UTC-10 (No DST)

Interactive Time Zone Map

Time Zones
Eastern (ET)
Central (CT)
Mountain (MT)
Pacific (PT)
Alaska (AKT)
Hawaii (HST)

Time Zone Converter

Instantly convert time between any U.S. time zones

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Converted Time
9:00 AM

Complete Zone Guide

🗽

Eastern Time Zone

The Eastern Time Zone covers the eastern United States including New York City, Miami, Boston, Atlanta, and Washington D.C. It's the most populous time zone in the U.S.

17
States
~47%
US Population
UTC-5
Standard
🌾

Central Time Zone

The Central Time Zone includes Chicago, Dallas, Houston, New Orleans, and much of the Midwest. It spans from the Great Lakes to Texas.

9
States
~29%
US Population
UTC-6
Standard
🏔️

Mountain Time Zone

The Mountain Time Zone covers Denver, Phoenix, Salt Lake City, and Albuquerque. Arizona notably does not observe Daylight Saving Time.

6
States
~7%
US Population
UTC-7
Standard
🌊

Pacific Time Zone

The Pacific Time Zone includes Los Angeles, San Francisco, Seattle, and Las Vegas. It's home to Hollywood and Silicon Valley.

5
States
~17%
US Population
UTC-8
Standard
🐻

Alaska Time Zone

The Alaska Time Zone covers most of Alaska, including Anchorage, Fairbanks, and Juneau. The westernmost Aleutian Islands use Hawaii time.

1
State
~0.2%
US Population
UTC-9
Standard
🌺

Hawaii-Aleutian Time

Hawaii and the western Aleutian Islands of Alaska use this time zone. Hawaii does not observe Daylight Saving Time.

1
State
~0.4%
US Population
UTC-10
Standard

Frequently Asked Questions

When does Daylight Saving Time start and end?
DST begins on the second Sunday of March at 2:00 AM (clocks spring forward) and ends on the first Sunday of November at 2:00 AM (clocks fall back). Arizona and Hawaii do not observe DST.
How many time zones does the U.S. have?
The continental United States has four time zones: Eastern, Central, Mountain, and Pacific. Including Alaska and Hawaii, there are six standard time zones. U.S. territories add additional zones.
What's the difference between EST and EDT?
EST (Eastern Standard Time) is used during winter months (UTC-5). EDT (Eastern Daylight Time) is used during summer months when DST is in effect (UTC-4). The same pattern applies to all zones that observe DST.
Why doesn't Arizona observe DST?
Arizona opted out of DST in 1968 because the extra hour of sunlight during already-hot summer evenings was seen as a disadvantage. The Navajo Nation within Arizona does observe DST.
What time is it on the East Coast vs West Coast?
The East Coast (Eastern Time) is always 3 hours ahead of the West Coast (Pacific Time). When it's 12:00 PM in New York, it's 9:00 AM in Los Angeles.
Which states span multiple time zones?
Several states span multiple zones: Florida, Indiana, Kentucky, Michigan, Tennessee (ET/CT), Kansas, Nebraska, North Dakota, South Dakota, Texas (CT/MT), Oregon, Idaho (MT/PT), and Alaska (AKT/HST).