Everything you need to know about Eastern, Central, Mountain, Pacific, Alaska, and Hawaii time zones in the United States.
Overview of US Time Zones
The continental United States spans four main time zones, with Alaska and Hawaii adding two more.
| Time Zone | Abbreviation | UTC Standard | UTC DST |
|---|---|---|---|
| Eastern | ET (EST/EDT) | UTC-5 | UTC-4 |
| Central | CT (CST/CDT) | UTC-6 | UTC-5 |
| Mountain | MT (MST/MDT) | UTC-7 | UTC-6 |
| Pacific | PT (PST/PDT) | UTC-8 | UTC-7 |
| Alaska | AKT | UTC-9 | UTC-8 |
| Hawaii-Aleutian | HAT | UTC-10 | N/A |
Eastern Time Zone (ET)
The Eastern Time Zone is the most populous US time zone, home to about 47% of Americans.
Major Cities
- New York City, NY
- Washington, D.C.
- Miami, FL
- Atlanta, GA
- Boston, MA
Central Time Zone (CT)
The Central Time Zone covers the heartland of America.
Major Cities
- Chicago, IL
- Houston, TX
- Dallas, TX
- San Antonio, TX
- Memphis, TN
Mountain Time Zone (MT)
The Mountain Time Zone covers the Rocky Mountain region.
Arizona's Special Case
Arizona does not observe Daylight Saving Time (except the Navajo Nation). This means Arizona effectively matches Pacific Time during summer DST.
Pacific Time Zone (PT)
The Pacific Time Zone covers the West Coast and is home to Silicon Valley and Hollywood.
Major Cities
- Los Angeles, CA
- San Francisco, CA
- Seattle, WA
- Portland, OR
- Las Vegas, NV
Alaska and Hawaii
Alaska Time (AKT) covers most of Alaska at UTC-9.
Hawaii-Aleutian Time (HAT) at UTC-10 does not observe DST—Hawaii is always UTC-10 year-round.
Daylight Saving Time in the US
2026 DST Dates
- Spring Forward: March 8, 2026 at 2:00 AM
- Fall Back: November 1, 2026 at 2:00 AM
States That Don't Observe DST
- Arizona (except Navajo Nation)
- Hawaii
- US Territories: Puerto Rico, US Virgin Islands, Guam
Conclusion
Understanding US time zones is essential for scheduling across this large country. Use WorldClock.lol to instantly see times across all US cities.
