How many time zones does the United States use?
The US uses nine time zones: Eastern, Central, Mountain, Pacific, Alaska, Hawaii-Aleutian, Atlantic (Puerto Rico and the US Virgin Islands), Samoa, and Chamorro (Guam and the Northern Mariana Islands).
Online Tools & Utilities
USA Time
Live time for every US time zone, state, and city
- Community votes0
- DR by Ahrefs5 no change since last check
Ahrefs Domain Rating set in type 25 Oct 2026, reset 25 Oct 2026.
USA Time metrics
| Metric | Value |
|---|---|
| Domain Rating | 5 no change since last check |
| Trust Flow | 6 no change since last check |
| Citation Flow | 28 no change since last check |
| Referring domains | 7 no change since last check |
| External backlinks | 53 no change since last check |
Ahrefs Domain Rating set in type 25 Oct 2026, reset 25 Oct 2026. Lead topic: Computers/Software/Operating Systems (6). Majestic set 25 Oct 2026, reset 25 Oct 2026. Link data typeset by Majestic. Trust Flow, Citation Flow and Topical Trust Flow are trademarks of Majestic-12 Ltd.
A free reference tool showing the current time across all US time zones, states, and cities with browser-based tools for time conversion, alarms, and timers.
The story so far
USA Time provides live, second-by-second time displays for every US time zone, state, and city, computed directly from the IANA time zone database to ensure daylight saving time is always handled correctly. The site addresses the complexity of America's time zone map, which includes fourteen states split between two zones, two states that skip daylight saving entirely, and five territories with fixed offsets.
Beyond reference pages, USA Time offers a suite of free browser-based tools that require no account or download: an alarm clock, timers, a stopwatch, a time zone converter, and a meeting planner. All times are computed live from the IANA time zone database, the same open dataset used by browsers, phones, and servers worldwide, ensuring accuracy through every daylight saving transition without manual updates.
The site includes interactive maps, comprehensive guides on daylight saving time, and detailed information about why the US has nine time zones and which states operate on multiple time zones.
Typeset features
- Live time display for all US time zones updated second-by-second
- Time zone converter for global time comparisons
- Interactive US time zone map
- Meeting planner tool
- Computed from IANA time zone database for accurate DST handling
- Comprehensive guides on US time zones and daylight saving
Pricing
Pricing model: Free
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Questions and answers
Which US states don't observe daylight saving time?
Arizona (outside the Navajo Nation) and Hawaii stay on standard time year-round, as do Puerto Rico, the US Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands.
What US states are split between two time zones?
Fourteen states have territory in more than one time zone, including Florida, Texas, Indiana, Kentucky, Tennessee, Idaho, Oregon, Kansas, Nebraska, Nevada, North Dakota, South Dakota, Michigan, and Alaska.
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