Interactive US time zone map showing live current times for all 50 states. View Pacific, Mountain, Central, and Eastern time zones at a glance.
The contiguous United States spans four main time zones: Pacific, Mountain, Central, and Eastern. Each zone is one hour apart, with Eastern being the furthest ahead (UTC-5 standard) and Pacific the furthest behind (UTC-8 standard). Some states, such as Florida, Indiana, Kentucky, and Tennessee, are split between two time zones. Including Alaska, Hawaii, and Puerto Rico, the US spans seven distinct time zones.
The Pacific Time Zone covers the western coast of the United States, including California, Washington, Oregon, and Nevada. During standard time it is UTC-8, and during daylight saving time it shifts to UTC-7 (PDT).
The Mountain Time Zone covers states like Colorado, Utah, Montana, Wyoming, New Mexico, and Arizona. Arizona does not observe daylight saving time (except the Navajo Nation). Standard time is UTC-7, daylight saving is UTC-6.
The Central Time Zone is the most populated US time zone, covering states like Texas, Illinois, Wisconsin, Missouri, and Louisiana. Standard time is UTC-6, daylight saving is UTC-5.
The Eastern Time Zone covers the eastern seaboard including New York, Florida, Georgia, Pennsylvania, and Ohio. Standard time is UTC-5, daylight saving is UTC-4. This zone is home to the New York Stock Exchange and most major US financial markets.
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This interactive US Time Zone Map provides a real-time view of current times across all 50 states, Washington D.C., and Puerto Rico. The map is color-coded by time zone, making it easy to quickly identify which zone any state belongs to. States that observe Daylight Saving Time are marked with diagonal stripes when DST is active. Split-zone states show a gradient of both zone colors.
Hover over any state on the map to see a tooltip with the state's full name, DST status, current time, and time zone abbreviation. States in two time zones show both. Use the 12H/24H toggle to switch between time formats. Toggle between full state names and abbreviations on the map using the Name/Abbr switch.
Most of the United States observes Daylight Saving Time (DST), advancing clocks by one hour in spring and reverting in fall. DST begins on the second Sunday of March and ends on the first Sunday of November. Arizona (except the Navajo Nation), Hawaii, and US territories like Puerto Rico do not observe DST. States currently in DST are indicated with diagonal stripes on the map.
DST Offset Changes: Eastern: EST (UTC-5) to EDT (UTC-4). Central: CST (UTC-6) to CDT (UTC-5). Mountain: MST (UTC-7) to MDT (UTC-6). Pacific: PST (UTC-8) to PDT (UTC-7). Alaska: AKST (UTC-9) to AKDT (UTC-8).
The contiguous United States spans four primary time zones: Eastern, Central, Mountain, and Pacific. Including Alaska and Hawaii, the US covers six time zones. Puerto Rico and the US Virgin Islands use Atlantic Standard Time, bringing the total to seven distinct time zones across all US jurisdictions. Several states are split between two time zones, including Florida, Indiana, Kentucky, Tennessee, Texas, Kansas, Nebraska, North Dakota, South Dakota, Michigan, Idaho, and Oregon.
Before the adoption of standard time zones, each city in the United States set its own local time based on the position of the sun. This created enormous confusion for railroad scheduling and telegraph communication. On November 18, 1883, US and Canadian railroads instituted standard time zones, dividing the continent into four zones. This system was later codified into federal law with the Standard Time Act of 1918, which also introduced Daylight Saving Time.
The Uniform Time Act of 1966 standardized DST across the country, though states could opt out entirely. The most recent change came with the Energy Policy Act of 2005, which extended DST by four weeks starting in 2007.
Time zone boundaries in the United States don't always follow state lines. In many split-zone states, the boundary runs along county lines. For example, in Indiana, most of the state observes Eastern Time, but several counties near Chicago and Evansville use Central Time. Similarly, in Texas, the far western tip (El Paso area) operates on Mountain Time while the rest of the state uses Central Time.
The U.S. Department of Transportation is responsible for determining and maintaining time zone boundaries. Communities can petition to change their time zone designation, and such changes require a formal rulemaking process.
The contiguous United States has four time zones: Eastern, Central, Mountain, and Pacific. Including Alaska, Hawaii, and US territories like Puerto Rico, the US spans a total of seven time zones.
Several states are split between two time zones, including Florida, Indiana, Kentucky, Tennessee, Texas, Kansas, Nebraska, North Dakota, South Dakota, Michigan, Idaho, and Oregon.
Most of Arizona does not observe daylight saving time, remaining on Mountain Standard Time (MST/UTC-7) year-round. The Navajo Nation within Arizona does observe DST.
In the US, daylight saving time begins on the second Sunday of March and ends on the first Sunday of November. Clocks spring forward one hour in March and fall back one hour in November.
Puerto Rico is in the Atlantic Standard Time (AST) zone, which is UTC-4. Puerto Rico does not observe Daylight Saving Time.
Diagonal stripes indicate that a state is currently observing Daylight Saving Time (DST). States without stripes either don't observe DST or DST is not currently active.
The East Coast (Eastern Time) is always 3 hours ahead of the West Coast (Pacific Time). For example, when it's 12:00 PM in New York, it's 9:00 AM in Los Angeles. This difference remains the same during both standard time and daylight saving time since both zones shift simultaneously.
Hawaii opted out of the Uniform Time Act of 1966 because its tropical latitude means day length doesn't vary significantly throughout the year. The sun rises and sets at roughly the same time year-round, making DST unnecessary. Hawaii uses Hawaii-Aleutian Standard Time (HST/UTC-10) all year.
Most of Indiana observes Eastern Time and has observed DST since 2006. However, several counties in the northwest (near Chicago) and southwest (near Evansville) corners of the state use Central Time. Indiana's time zone history is notably complex, with different counties switching zones multiple times over the decades.
The U.S. Department of Transportation (DOT) has authority over time zone boundaries under federal law. Communities can petition the DOT to change their time zone designation. Changes require a formal rulemaking process including public comment periods and impact assessments.
Yes. The Sunshine Protection Act was passed by the US Senate in 2022, proposing permanent DST nationwide. However, it did not pass the House of Representatives. Several states have passed legislation to adopt permanent DST contingent on federal approval, including Florida, Washington, Oregon, and California.
Most of Alaska uses Alaska Standard Time (AKST/UTC-9), which shifts to Alaska Daylight Time (AKDT/UTC-8) during DST. The Aleutian Islands west of 169°30'W use Hawaii-Aleutian Time. Alaska is the only US state that spans such a vast longitudinal range, yet consolidates nearly all of it into a single time zone.