US Time Zone Map

US Time Zone Map with States

The “with states” variant: all 50 state boundaries over the six zone colors. Click a state to pin its current time; split states are flagged and link to pages showing where the line runs.

50 statesand D.C., 14 of them crossed by a zone line
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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States a zone line crosses

The outlines are the 50 states and D.C., from U.S. Census boundary data in an Albers projection. Each state is filled with the zone most of it uses; the 14 crossed by a line are flagged on the map and listed here.

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

Does the map show state boundaries?

Yes — all 50 states and D.C. are drawn from U.S. Census boundary data. Click any state to pin its current time and see its zone.

How does the map handle multi-zone states?

Each state is colored by the zone most of it uses, so a split state like Tennessee or Kentucky shows one color. The 13 split states are flagged in their tooltips, and each state page lists every zone it uses, with live clocks for cities on both sides of the line.

Where can I see a specific state’s map?

Use the state index at /states/ — every state has its own page with a focused map crop, zone table, and live city clocks.