US Time Zone Map

US Time Zone Map

The whole country in one view: all six U.S. time zones in distinct colors, 50 state outlines, 101 city markers, and live clocks for every zone. Click a state to pin its current time, hover any state or city for details, search a city or state, switch between 12- and 24-hour clocks, or share a link with your settings. Times come from your device clock.

Coordinated Universal Time6:08 PMYour time, right now
Your time11:38 PMSAT, OCT 31UTC+5:30
Pacific timePacific11:08 AMSAT, OCT 31UTC-7
Mountain timeMountain12:08 PMSAT, OCT 31UTC-6
Central timeCentral1:08 PMSAT, OCT 31UTC-5
Eastern timeEastern2:08 PMSAT, OCT 31UTC-4
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The six U.S. time zones

  • Hawaii–Aleutian Time

    UTC−10

    UTC−10 year-round, with no daylight saving. The furthest-behind zone in the United States; in summer it is six hours behind Eastern Time (five hours in winter).

    Hawaii–Aleutian map

  • Alaska Time

    UTC−9 / UTC−8

    One hour behind Pacific Time, for nearly all of Alaska — Anchorage, Fairbanks, and Juneau. Only the western Aleutian Islands use Hawaii–Aleutian Time.

    Alaska map

  • Pacific Time

    UTC−8 / UTC−7

    The westernmost continental zone: California, Washington, nearly all of Nevada and Oregon, and the northern panhandle of Idaho.

    Pacific map

  • Mountain Time

    UTC−7 / UTC−6

    Colorado, Utah, New Mexico, Montana, Wyoming, and Arizona, plus southern Idaho and the western edges of Kansas, Nebraska, the Dakotas, and Texas.

    Mountain map

  • Central Time

    UTC−6 / UTC−5

    The hub zone: Illinois, Texas, Minnesota, and 17 more states in all or part. Ten states straddle its edges, from Texas and the Dakotas to Florida and Michigan.

    Central map

  • Eastern Time

    UTC−5 / UTC−4

    The densest zone: New York to Maine, plus most of the Mid-Atlantic and Southeast. Florida, Indiana, Kentucky, Michigan, and Tennessee each have parts on Central Time.

    Eastern map

How the zones came to be

Five dates behind every clock on this map, from sundials to daylight saving.

Before 1883

Sun time

Every town set its clocks by the sun overhead, so noon in Boston came about twelve minutes before noon in New York, and railroads juggled dozens of local times.

A weathered stone sundial with Roman numerals and an iron gnomon
A sundial on the porch of St Giles’ Church, Chesterton, England.

November 18, 1883

Railroad time

U.S. and Canadian railroads switched to standard zones an hour apart, set from Greenwich. Many towns reset their clocks the same day, remembered as “the day of two noons.”

A gold railroad pocket watch with a white dial, lying on its chain
A railroad pocket watch made for the Plant System, a railroad of the Southeast.

1884

Greenwich

Delegates at the International Meridian Conference in Washington chose the Greenwich meridian as longitude zero — the line every UTC offset on this site is counted from.

A red time ball on its mast above the octagonal turret of the Royal Observatory
The time ball on the Royal Observatory, Greenwich, dropped at 1 p.m. as a public time signal since 1833.

1918 and 1966

Time by law

The Standard Time Act made the zones federal law in 1918. The Uniform Time Act of 1966 set common daylight-saving rules and let a state opt out, as Arizona and Hawaii do.

The open back of a railroad-grade pocket watch, showing its jewelled movement
The movement of a Hamilton railroad-grade pocket watch, about 1929.

2026

Daylight saving

Since 2007 clocks spring forward on the second Sunday of March and fall back on the first Sunday of November: March 8 and November 1 this year.

A large 24-hour clock face set into a red brick wall beneath a sign reading Royal Observatory Greenwich
The Shepherd Gate Clock at Greenwich, which shows Greenwich Mean Time on a 24-hour dial.

Frequently asked questions

How many time zones does the United States have?

Six across the 50 states: Pacific, Mountain, Central, Eastern, Alaska, and Hawaii–Aleutian. Territories add Atlantic Time (Puerto Rico, U.S. Virgin Islands), Samoa Time, and Chamorro Time (Guam, Northern Mariana Islands).

Which states span more than one time zone?

Thirteen: Alaska, Florida, Idaho, Indiana, Kansas, Kentucky, Michigan, Nebraska, North Dakota, Oregon, South Dakota, Tennessee, and Texas, plus Nevada’s border city of West Wendover on Mountain Time — see the state maps for where each line runs.

Does this US time zone map show cities?

Yes — 101 cities and towns are marked with live local times. Search any city to zoom to it and read its IANA zone and current time.

Why does Arizona show the same time as California in summer?

Arizona stays on Mountain Standard Time (UTC−7) all year. When California moves to Pacific Daylight Time (also UTC−7) in March, the two match until November.