US time zones

U.S. time zones — live clocks & converter

See the time right now across Eastern, Central, Mountain, Pacific, Alaska, Hawaii, Arizona, and Atlantic (Puerto Rico). Convert any city time into every U.S. zone — including “previous day” / “next day” when the date flips.

Looking for a state or city clock (Texas, California, NYC)? Open USA Time Now →

Live across the U.S.

Click a card for zone details, major cities, and DST notes.

New York · View zone →

Chicago · View zone →

Los Angeles · View zone →

Anchorage · View zone →

Honolulu · View zone →

Phoenix · View zone →

San Juan · View zone →

Hagåtña · View zone →

Pago Pago · View zone →

US Time Zone Converter

Example: Tokyo 10:00 → see New York, Los Angeles, Chicago, Denver, Honolulu, and the rest — with day-shift labels when needed.

From city / zoneDateLocal time

Converting 11:01 in Tokyo, JP (GMT+9) → all U.S. zones. Times use official IANA zones (DST applied automatically).

U.S. zone	Local time	Date	Note
Eastern Time EDT	10:01 PM	Wed, Oct 21, 2026	previous day
Central Time CDT	9:01 PM	Wed, Oct 21, 2026	previous day
Mountain Time MDT	8:01 PM	Wed, Oct 21, 2026	previous day
Pacific Time PDT	7:01 PM	Wed, Oct 21, 2026	previous day
Alaska Time AKDT	6:01 PM	Wed, Oct 21, 2026	previous day
Hawaii–Aleutian Time HST · no DST	4:01 PM	Wed, Oct 21, 2026	previous day
Arizona (Mountain Standard) MST · no DST	7:01 PM	Wed, Oct 21, 2026	previous day
Atlantic Time (Puerto Rico) AST · no DST	10:01 PM	Wed, Oct 21, 2026	previous day
Chamorro Time GMT+10 · no DST	12:01 PM	Thu, Oct 22, 2026	—
Samoa Standard Time GMT-11 · no DST	3:01 PM	Wed, Oct 21, 2026	previous day

Live clocks refresh about every 30s (last tick 11:01 AM source-local). Prefer a city page? Browse the U.S. time zones list.

Browse time zone pages

Eastern Time

UTC−5 / UTC−4

Covers the East Coast from Maine to Florida, plus parts of the Midwest and South. Most populous U.S. time zone.

Central Time

UTC−6 / UTC−5

Runs through the Midwest and Gulf Coast — Chicago, Dallas, Houston, New Orleans, and much of Texas and the Plains.

Mountain Time

UTC−7 / UTC−6

Rocky Mountain states that observe daylight saving — Denver, Salt Lake City, Albuquerque. Arizona is listed separately.

Pacific Time

UTC−8 / UTC−7

West Coast time — California, Washington, Oregon (most), and Nevada. Home to Los Angeles, San Francisco, Seattle.

Alaska Time

UTC−9 / UTC−8

Most of Alaska uses Alaska Time. Some Aleutian islands use Hawaii–Aleutian Time instead.

Hawaii–Aleutian Time

UTC−10 year-round

Hawaii stays on Hawaii Standard Time year-round (no daylight saving). Also used in parts of the Aleutian Islands.

Arizona (Mountain Standard)

UTC−7 year-round

Most of Arizona stays on Mountain Standard Time year-round and does not observe daylight saving. The Navajo Nation does observe DST.

Atlantic Time (Puerto Rico)

UTC−4 year-round

Puerto Rico and the U.S. Virgin Islands use Atlantic Standard Time year-round (no daylight saving).

Chamorro Time

UTC+10 year-round

Guam and the Northern Mariana Islands use Chamorro Standard Time year-round (no DST).

Samoa Standard Time

UTC−11 year-round

American Samoa uses Samoa Standard Time year-round (no daylight saving).

How U.S. time zones work

The contiguous United States uses four primary zones — Eastern, Central, Mountain, and Pacific — plus Alaska and Hawaii. Most areas observe daylight saving time; Arizona (mostly) and Hawaii do not. Puerto Rico stays on Atlantic Standard Time year-round.

Need a world converter with more countries? Open the full timezone converter.