Time Zone Map of USA | Details And Large Time Zone Map

Time Zone Map of USA | Details And Large Time Zone Map

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The United States of America (USA) is located in central North America, between Canada and Mexico. The Map of the USA is the world’s third- or fourth-largest in terms of land area. It has a total area of 3.8 million square miles (9.8 million square kilometers). There is a 9-time zone in the Time Zone Map of USA. All-time zone boundaries and DST observance are looking after by the Department of Transportation.

Time Zone is a Term to describe the local time of a Region or a Country. The local Time within a Time Zone Map is described by its offset (difference) from Coordinated Universal Time (UTC). It is the world’s time standard. UTC time changes 1 hour forward and backward corresponding to a 1-hour difference in mean solar time for every 15 degrees east or west of the prime meridian (0° longitude) in Greenwich, London, United Kingdom. The offset is expressed as either UTC- or UTC+ and the number of hours and minutes.

USA Time Zone

There is a 9-time zone in the Time Zone Map of USA and its dependencies. All-time zone boundaries and DST observance are looking after by the Department of Transportation. Daylight Saving Time (DST) begins at 2:00 a.m. local time on the second Sunday in March. It moves the clocks forward one hour for making better use of daylight.

On the first Sunday in November areas on Daylight Saving Time return to Standard Time at 2:00 a.m. All-time zones in the United States and its regions are defined at the federal level by law 15 USC §260.

The Nine Standard Time Zones Name Are:

  • Atlantic Standard Time (AST)
  • Eastern Standard Time (EST)
  • Central Standard Time (CST)
  • Mountain Standard Time (MST)
  • Pacific Standard Time (PST)
  • Alaskan Standard Time (AKST)
  • Hawaii-Aleutian Standard Time (HST)
  • Samoa standard time (UTC-11)
  • Chamorro Standard Time (UTC+10)

Full-Time Zone Table of USA

Time Zone

DST

Standard

Atlantic (not observed) UTC−04:00
Eastern UTC−04:00 UTC−05:00
Central UTC−05:00 UTC−06:00
Mountain UTC−06:00 UTC−07:00
Pacific UTC−07:00 UTC−08:00
Alaska UTC−08:00 UTC−09:00
Hawaii‑Aleutian UTC−09:00 UTC−10:00
American Samoa (not observed) UTC−11:00
(not observed) UTC−12:00
(not observed) UTC+12:00
Chamorro (not observed) UTC+10:00

1. Hawaii-Aleutian Time Zone

The Name Hawaii-Aleutian Time Zone derives from two areas: Hawaii and the Aleutian Islands in Alaska. These two areas do not use daylight saving time. The time zone observes Hawaii-Aleutian Standard Time (HAST), which is obtained by subtracting 10 hours from UTC (UTC-10:00). Honolulu, Hilo, and Kapaa are Some of the major metropolitan areas under this time zone.

2. Eastern Time Zone

The Eastern Time Zone (ET) used by the 22 states in the eastern United States. It is 5 hours behind UTC. The northern part of ET is advanced by one hour to 0300 hours EDT at 0200 hours EST on the first Sunday of March. On the first Sunday of November, the time is moved back by one hour at 0200 hours EDT to 0100 hours EST.

3. Central Time Zone

Nine states used the Central Time Zone (CT) in the US and the Canadian province of Manitoba, and most of Mexico. It is observed by subtracting six hours from UTC (UTC-06:00). Most of the zone uses DST during summer and changes to Central Daylight Time (CDT), which is 5 hours behind UTC.

4. Pacific Time Zone

The Pacific Time Zone (PT) is used by the western states of the US and western Mexico, western Canada. The standard time within this zone is observed by subtracting 8 hours from UTC (UTC-8). During DST, an offsite time of UTC-7 is used. PST is one hour ahead of Hawaii and Alaska Time Zones, and at least one hour behind the other time zones.

5. Mountain Time Zone

Five states, namely Colorado, New Mexico, Wyoming, Utah, and Montana, are used the Mountain Time Zone. It is 7 hours from UTC (UTC-07:00) and 6 hours during DST (UTC-06:00).

6. Alaska Time Zone

Almost the entire state of Alaska used the Alaska Time Zone. SIt is 9 hours from UTC (UTC-09:00) and 8 hours during DST (UTC-08:00). The clock time in the Alaska Time Zone is based on the mean solar time at 135 degrees west of Greenwich Observatory.

List of State With Time Zome

State Name Time Zone(s)
Alabama Central Time Zone
Alaska Alaska Time Zone, Hawaii-Aleutian Time Zone
Arizona Mountain Time Zone
Arkansas Central Time Zone
California Pacific Time Zone
Colorado Mountain Time Zone
Connecticut Eastern Time Zone
Delaware Eastern Time Zone
Florida Eastern Time Zone, Central Time Zone
Georgia Eastern Time Zone
Hawaii Hawaii-Aleutian Time Zone
Idaho Mountain Time Zone, Pacific Time Zone
Illinois Central Time Zone
Indiana Eastern Time Zone, Central Time Zone
Iowa Central Time Zone
Kansas Central Time Zone, Mountain Time Zone
Kentucky Eastern Time Zone, Central Time Zone
Louisiana Central Time Zone
Maine Eastern Time Zone
Maryland Eastern Time Zone
Massachusetts Eastern Time Zone
Michigan Eastern Time Zone, Central Time Zone
Minnesota Central Time Zone
Mississippi Central Time Zone
Missouri Central Time Zone
Montana Mountain Time Zone
Nebraska Central Time Zone, Mountain Time Zone
Nevada Pacific Time Zone, Mountain Time Zone
New Hampshire Eastern Time Zone
New Jersey Eastern Time Zone
New Mexico Mountain Time Zone
New York Eastern Time Zone
North Carolina Eastern Time Zone
North Dakota Central Time Zone, Mountain Time Zone
Ohio Eastern Time Zone
Oklahoma Central Time Zone
Oregon Pacific Time Zone, Mountain Time Zone
Pennsylvania Eastern Time Zone
Rhode Island Eastern Time Zone
South Carolina Eastern Time Zone
South Dakota Central Time Zone, Mountain Time Zone
Tennessee Eastern Time Zone, Central Time Zone
Texas Central Time Zone, Mountain Time Zone
Utah Mountain Time Zone
Vermont Eastern Time Zone
Virginia Eastern Time Zone
Washington Pacific Time Zone
West Virginia Eastern Time Zone
Wisconsin Central Time Zone
Wyoming Mountain Time Zone

Daylight Saving Time is not observed in Hawaii, and by most of Arizona. In summer, local time in Arizona is the same as Pacific Daylight Time (PDT). In the winter Arizona is on Mountain Standard Time (MST).