USA Time Zone Map

Explore time zone map of the US, The United States is divided into several time zones. The main ones are Eastern, Central, Mountain, and Pacific Time Zones. Each zone is one hour apart from the next. This means when it's 12:00 PM in the Eastern Time Zone, it's 11:00 AM in the Central Time Zone, 10:00 AM in the Mountain Time Zone, and 9:00 AM in the Pacific Time Zone. Alaska and Hawaii have their own time zones too. These time zones help people across the country coordinate times for work, TV shows, and other activities. It's important to know these time zones, especially when you travel or call someone in a different part of the country.

USA Time Zone Map

Are you looking for a Customized Map? Please get Custom Mapping Quote here.

About USA Time Zone Map

Explore US time zone map, Time in the United States of America, by law, is divided into 9 standard time zones covering the American states, territories and other U.S. possessions, with most of the U.S. observing DST (daylight saving time) for generally the spring, summer, and fall months. The time zone boundaries and daylight saving time observance are organized by the Department of Transportation. Official and extremely precise timekeeping services (clocks) are presented by 2 federal agencies: NIST (the National Institute of Standards and Technology) (an agency of the Department of Commerce); and UNSO (the United States Naval Observatory). The clocks managed by these services are kept in synchronization with each other as well as with those of other internationally recognized timekeeping organizations.

It is the mix of the time zone and DST rules, along with the timekeeping services, which calculate the legal civil time for any United States location at any moment.

United States Maps in our Store - Order High Resolution Vector and Raster Files

United States and Regional Time Zones

The United States spans across multiple time zones, making it unique in how time is managed from coast to coast. Understanding these time zones is crucial for scheduling, travel, and business operations across the country and internationally.

At its broadest division, the contiguous United States incorporates four main time zones. Starting from the east coast, there is Eastern Standard Time (EST), followed by Central Standard Time (CST), Mountain Standard Time (MST), and Pacific Standard Time (PST). Each time zone is an hour apart, stepping backward as you move from east to west.

In addition to these, two more time zones are part of the U.S. territories: Alaska Standard Time (AKST) and Hawaii-Aleutian Standard Time (HAST). These zones account for the vast geographic spread of the country and its territories, ensuring that timekeeping is consistent and logical for all residents.

Daylight Saving Time (DST) is another important aspect of time management in the U.S. Most states move their clocks forward by one hour in the spring and back again in the fall. This practice aims to extend evening daylight in the warmer months. However, not all places in the U.S. observe DST, with Arizona (excluding the Navajo Nation) and Hawaii maintaining the same time year-round.

For those traveling or communicating across regions, being aware of these time zones and their DST adjustments is essential. It helps in planning and ensures smooth coordination across different parts of the country. Whether it's for setting up meetings, managing business operations, or scheduling travel plans, a clear understanding of U.S. time zones simplifies time management on a national scale.

The United States of America and its surrounding areas use 9 standard time zones. As defined by U.S. law they are:

Time ZoneDSTStandard 
Atlantic(not observed)UTC−04:00Puerto Rico, U.S. Virgin Islands
EasternUTC−04:00UTC−05:00Connecticut, Delaware, District of Columbia, Georgia, Maine, Maryland, Massachusetts, New Hampshire, New Jersey, New York, North Carolina, Ohio, Pennsylvania, Rhode Island, South Carolina, Vermont, Virginia, West Virginia; Partially: Florida, Indiana, Kentucky, Michigan, Tennessee; No DST observed, not defined by 15 U.S.C. §260: Navassa Island, Bajo Nuevo Bank, Serranilla Bank
CentralUTC−05:00UTC−06:00Alabama, Arkansas, Chicago, Iowa, Louisiana, Minnesota, Mississippi, Missouri, Oklahoma, Wisconsin; Partially: Florida, Indiana, Kansas, Kentucky, Michigan, Nebraska, North Dakota, South Dakota, Tennessee, Texas
MountainUTC−06:00UTC−07:00Arizona (no DST outside of Navajo Nation), Colorado, Montana, New Mexico, Utah, Wyoming; Partially: Idaho, Kansas, Nebraska, North Dakota, Oregon, South Dakota, Texas
PacificUTC−07:00UTC−08:00California, Nevada, Washington (state); Partially: Idaho, Oregon
AlaskaUTC−08:00UTC−09:00Partially: Alaska
Hawaii‑AleutianUTC−09:00UTC−10:00Hawaii (no DST observed in Hawaii); Partially: Alaska; No DST observed, not defined by 15 U.S.C. §260: Johnston Atoll
American Samoa(not observed)UTC−11:00American Samoa; Not defined by 15 U.S.C. §260: Jarvis Island, Midway Atoll, Palmyra Atoll, Kingman Reef
 (not observed)UTC−12:00Not defined by 15 U.S.C. §260: Baker Island, Howland Island
 (not observed)UTC+12:00Not defined by 15 U.S.C. §260: Wake Island
Chamorro(not observed)UTC+10:00Guam, Northern Mariana Islands

List of U.S. States and Territories by Time Zone


StateTime Zone
Alabama(AL)Central Standard Time (CST)
Alaska(AK)Alaska Standard Time (AKST)
Aleutian Islands Hawaii-Aleutian Standard Time (HST)
Arizona(AZ)Mountain Standard Time (MST)
The Navajo Nation uses Daylight Saving Time (DST), the rest of the state does not
American SamoaSamoa Time (SST)
American Samoa does not use Daylight Saving Time (DST)
Arkansas(AR)Central Standard Time (CST)
California(CA)Pacific Standard Time (PST)
Colorado(CO)Mountain Standard Time (MST)
Connecticut(CT)Eastern Standard Time (EST)
Delaware(DE)Eastern Standard Time (EST)
District of Columbia(DC)Eastern Standard Time (EST)
Florida(FL)Most of the state: Eastern Standard Time (EST)
West of the Apalachicola River: Central Standard Time (CST)
Georgia(GA)Eastern Standard Time (EST)
Guam (GU)Chamorro Standard Time (ChST)
Guam does not use Daylight Saving Time (DST)
Hawaii(HI)Hawaii-Aleutian Standard Time (HST)
Hawaii does not use Daylight Saving Time (DST)
Idaho(ID)Most of the state: Mountain Standard Time (MST)
North of the Salmon River: Pacific Standard Time (PST)
Illinois(IL)Central Standard Time (CST)
Indiana(IN)Most of the state: Eastern Standard Time (EST)
Some counties near the southwestern and northwestern border of the state use Central Standard Time (CST)
Iowa(IA)Central Standard Time (CST)
Kansas(KS)Most of the state: Central Standard Time (CST)
Greeley, Hamilton, Sherman and Wallace counties: Mountain Standard Time (MST)
Kentucky(KY)Western half of the state: Central Standard Time (CST)
Eastern half of the state: Eastern Standard Time (EST)
Louisiana(LA)Central Standard Time (CST)
Maine(ME)Eastern Standard Time (EST)
Maryland(MD)Eastern Standard Time (EST)
Massachusetts(MA)Eastern Standard Time (EST)
Michigan(MI)Most of the state: Eastern Standard Time (EST)
Dickinson, Gogebic, Iron and Menominee Counties: Central Standard Time (CST)
Minnesota(MN)Central Standard Time (CST)
Mississippi(MS)Central Standard Time (CST)
Missouri(MO)Central Standard Time (CST)
Montana(MT)Mountain Standard Time (MST)
Nebraska(NE)Most of the state: Central Standard Time (CST)
Western part of the state: Mountain Standard Time (MST)
Nevada(NV)Most of the state: Pacific Standard Time (PST)
2 small towns, Jackpot and West Wendover: Mountain Standard Time (MST)
New Hampshire(NH)Eastern Standard Time (EST)
New Jersey(NJ)Eastern Standard Time (EST)
New Mexico(NM)Mountain Standard Time (MST)
New York(NY)Eastern Standard Time (EST)
North Carolina(NC)Eastern Standard Time (EST)
North Dakota(ND)Most of the state: Central Standard Time (CST)
Western North Dakota: Mountain Standard Time (MST)
Northern Mariana Islands(MP)Chamorro Standard Time (ChST)
The CNMI does not use Daylight Saving Time (DST)
Ohio(OH)Eastern Standard Time (EST)
Oklahoma(OK)Central Standard Time (CST)
Oregon(OR)Most of the state: Pacific Standard Time (PST)
Part of Malheur County: Mountain Standard Time (MST)
Pennsylvania(PA)Eastern Standard Time (EST)
Puerto Rico (PR)Atlantic Standard Time (AST)
Puerto Rico does not use Daylight Saving Time (DST)
Rhode Island(RI)Eastern Standard Time (EST)
South Carolina(SC)Eastern Standard Time (EST)
South Dakota(SD)Eastern South Dakota: Central Standard Time (CST)
Western South Dakota: Mountain Standard Time (MST)
Tennessee(TN)West Tennessee: Central Standard Time (CST)
Middle Tennessee, plus Marion County: Central Standard Time (CST)
East Tennessee, except Marion County: Eastern Standard Time (EST)
Texas(TX)Most of the state: Central Standard Time (CST)
El Paso and Hudspeth Counties: Mountain Standard Time (MST)
United States Virgin Islands (USVI)Atlantic Standard Time (AST)
The USVI does not use Daylight Saving Time (DST)
Utah(UT)Mountain Standard Time (MST)
Vermont(VT)Eastern Standard Time (EST)
Virginia(VA)Eastern Standard Time (EST)
Washington(WA)Pacific Standard Time (PST)
West Virginia(WV)Eastern Standard Time (EST)
Wisconsin(WI)Central Standard Time (CST)
Wyoming(WY)Mountain Standard Time (MST)

Federal District

Washington, D.C. does use DST (Daylight Savings Time).
Federal districtTime zone
Washington, D.C.UTC−5: Eastern Standard Time


The territories of the U.S. do not use Daylight Savings Time (DST).
TerritoryTime zone
American SamoaUTC-11: Samoa Standard Time
GuamUTC+10: Chamorro Standard Time
Northern Mariana IslandsUTC+10: Chamorro Standard Time
Puerto RicoUTC-4: Atlantic Standard Time (AST)
U.S. Virgin IslandsUTC-4: Atlantic Standard Time (AST)
Wake IslandUTC+12: Wake Island Time Zone

Time in the United States

Time in the United States is determined by a system of time zones, designed to accommodate the vast geographic spread of the country. This system ensures that as the Earth rotates and different areas move into and out of daylight, local times can be adjusted accordingly for consistency and convenience.

The United States is divided into nine standard time zones, which range from the Eastern Standard Time (EST) on the east coast to the Hawaii-Aleutian Standard Time (HAST) in Hawaii and parts of Alaska. The other primary time zones include Central Standard Time (CST), Mountain Standard Time (MST), Pacific Standard Time (PST), Alaska Standard Time (AKST), and some more specialized zones like Samoa Standard Time (SST) and Chamorro Standard Time (ChST) in U.S. territories.

Most of the United States observes Daylight Saving Time (DST), typically from the second Sunday in March to the first Sunday in November. During this period, clocks are set forward by one hour, effectively moving an hour of daylight from the morning to the evening. DST aims to make better use of daylight during the evenings, reducing the need for artificial lighting and saving energy. However, not all areas of the U.S. observe DST, with notable exceptions including Arizona (except for the Navajo Nation, which does observe DST) and Hawaii.

Understanding the time zone in which a state or territory falls is crucial for everything from planning travel to conducting business across state lines. Each time zone represents a standard offset from Coordinated Universal Time (UTC), with Eastern Standard Time being UTC-5 hours, Central Standard Time UTC-6, Mountain Standard Time UTC-7, and Pacific Standard Time UTC-8, as examples.

Time zones in the United States are not only about the clock; they are about the rhythm of American life. They impact television broadcast schedules, flight times, stock market hours, and even when federal elections are called. As such, being mindful of time zones and their changes during the year is essential for anyone living in, visiting, or doing business with people in the United States.

History of US Time Zones

The history of US time zones is a fascinating journey that reflects the nation's growth and the evolution of its transportation and communication networks. Before the adoption of standard time zones, timekeeping was a local matter, with cities and towns setting their clocks based on the position of the sun. This system worked well when communities were isolated, but with the expansion of railroads in the 19th century, the need for a more organized timekeeping system became apparent.

The turning point came in 1883, when American and Canadian railroads implemented a system of standard time zones. This was a revolutionary change that enabled trains to run on a set schedule across different locations, drastically improving efficiency and safety in travel. The railroads divided the continent into four time zones, which closely resemble today's Eastern, Central, Mountain, and Pacific Standard Times.

The U.S. government officially adopted the railroad time zones in 1918 with the Standard Time Act, which also introduced Daylight Saving Time (DST) as a way to conserve fuel during World War I. Although DST was initially met with mixed reactions and its use varied over the years, it became more uniformly adopted over time, especially with the Uniform Time Act of 1966, which standardized the start and end dates for DST across the country.

Over the years, the boundaries of the time zones have been adjusted to accommodate the preferences of local communities and states, leading to the current configuration of nine standard time zones that include the continental U.S., Alaska, Hawaii, and U.S. territories. This system facilitates not only travel and communication across the vast country but also plays a crucial role in economic and social activities.

The history of US time zones is more than just a technical adjustment; it's a reflection of the country's development and its adaptation to technological advances. It highlights the importance of synchronized time in the modern world and underscores how innovations, such as railroads, can drive significant societal changes. Today, the time zone system in the United States stands as a testament to the country's commitment to progress and efficiency, ensuring that Americans across the nation can stay connected and in sync.

  1. US Map
  2. Detailed US Map
  3. US State Map
  4. Blank Map of US
  5. US States and Capitals Map
  6. USA Karte
  7. Mapa de Estados Unidos
  8. Carte des États-Unis
  9. Mapa dos Estados Unidos
  10. USA Time Zone Map
  11. US National Parks Map
  12. US Regions Map
  13. US Rivers Map
  14. USA World Map
  15. USA on World Map
  16. US Cities Map
  17. US State Abbreviation Map
  18. US Road Map
  19. US Travel Map
  20. US Rail Map
  21. US Territory Map
  22. US Zip Code Map
  23. US Physical Map
  24. US County Map
  25. Blank US County Map
  26. US Population Map
  27. Richest Cities in US
  28. US International Airports Map
  29. US Flag Map
  30. US Map Upside Down
  31. US Temperature Map
  32. US Latitude and Longitude Map
  33. East Coast Map
  34. West Coast Map
  35. Western US Map
  36. US Interstate Map
  37. USA Seismic Zones Map
  38. US Canada Map
  39. US Mexico Map
  40. Southern US Map
  41. US Elevation Map
  42. US Map Black and White
  43. US Midwest Map
  44. US Northeast Map
  45. Amtrak Map
  46. 13 Colonies Map
  47. Washington DC Map
  48. Best Places to Visit in Summer in USA
  49. US on North America Map
  50. Southeast US Map
  51. US Mountain Ranges Map
  52. Southwest US Map
  53. Northwestern US Map
  54. US Map without Names
  55. US Canada Border Map
  56. US Area Code Map
  57. American Civil War Map
  58. US Road Trip Map
  59. US Volcano Map
  60. New England Map
  61. US Satellite Map
  62. US Desert Map
  63. US Map 1860
  64. US Map 1800
  65. US Map 1850
  66. US Lakes Map
  67. Where is Niagara Falls
  68. Where is Grand Canyon
  69. Where Mount Rushmore
  70. Where is Statue of Liberty
  71. Where is White House
  72. Where is Hoover Dam
  73. Where is Golden Gate Bridge
  74. Where is Hollywood Sign
  75. Where is Empire State Building
  76. Where is Monument Valley
  77. Where is Lincoln Memorial
  78. Where is Gateway Arch
  79. Where is Great Smoky Mountains
  80. Where is Sears Tower
  81. Where is Independence Hall
  82. Where is One World Trade Center
  83. US Climate Map
  84. Where is Rocky Mountains
  85. Where is Old Faithful Geyser
  86. US Capital
  87. US Map in Gujarati