Navigate US Time Zones
With Confidence
See the current time in every US time zone at a glance — live clocks, an interactive time zone map, and instant conversions across America's six time zones.
Current Time by Zone
Visual Time Zone Boundaries
Zone boundaries on the map are simplified. For exactly where the lines run — including split states such as Indiana, Kentucky, Tennessee, Texas and Idaho — see US time zones by state. Click a zone or city for its current time.
Quick Time Converter
Convert a time between US zones for today. Need another date, Arizona, the territories or UTC? Use the full converter and chart.
Business Hours Calculator
Find the best meeting times across different US time zones
Overlapping Business Hours (9 AM - 5 PM)
Time Zone Overview
Home to New York City, Washington, D.C., Boston, Atlanta and Miami, Eastern Time serves nearly half the US population. It runs from Maine to Florida and inland to Ohio, Michigan and most of Indiana. Eastern Time guide →
Stretching from the Great Lakes to the Gulf Coast, Central Time covers Chicago, Houston, Dallas, Nashville, New Orleans and Minneapolis — and touches more split states than any other zone. Central Time guide →
From the Rocky Mountains to the desert Southwest, Mountain Time includes Denver, Phoenix, Salt Lake City and Albuquerque. Arizona stays on standard time year-round, except the Navajo Nation. Mountain Time guide →
The West Coast zone covers California and Washington, most of Oregon and Nevada, and northern Idaho — including Los Angeles, San Francisco, Seattle, Portland and Las Vegas. Pacific Time guide →
Almost all of Alaska — Anchorage, Fairbanks, Juneau — follows Alaska Time. The Aleutian Islands west of 169°30′ W use Hawaii-Aleutian time instead. Alaska Time guide →
Hawaii stays on Hawaii Standard Time all year with no daylight saving time. Alaska's western Aleutians share the zone but do switch to daylight time in summer. Hawaii-Aleutian Time guide →
Common Time Zone Questions
More answers: time zones by state · daylight saving time · abbreviations · converter & chart
In-Depth Guides
Convert any time on any date across all US zones at once — including Arizona, Puerto Rico, Guam and UTC — with a full hour-by-hour conversion chart and military time zone letters.
When DST starts and ends, which states skip it, and how the Sunshine Protection Act would change current rules. A complete look at how clocks shift across the US.
All 50 states and the District of Columbia, mapped to their primary time zone — plus a 50-state chart and the thirteen states that are split, with details on where the lines run.
What every US time zone abbreviation actually means, when to use ET vs. EST vs. EDT, and how to avoid the most common mix-ups in email and meeting invites.
Puerto Rico, the US Virgin Islands, Guam, the Northern Mariana Islands, American Samoa, and the smaller possessions — how their time zones relate to the mainland.
How the railroads, the Standard Time Act of 1918, and the Uniform Time Act of 1966 turned a chaotic patchwork of local times into the six-zone system used today.