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United States Time Zone Map

Standard Time Zones of the USA

USA Time Zones

NOTE: Indiana observes Daylight Savings Time starting 2006

United States time zones are nine standard time zones covering the states and possessions of the United States, used in conjunction with state and national legislation regarding the use of Daylight Saving Time.

Daylight Saving Time (also called DST, or summer time) is the portion of the year in which a region's local time is advanced by (usually) one hour from its official standard time. It is most common in temperate regions.

"Daylight saving time" is a system intended to "save" daylight, as opposed to "wasting" time. The official time is adjusted forward during the spring and summer months, so that the active hours of work and school will better match the hours of daylight.

Zones used in the contiguous USA

From east to west, these zones are:

Eastern Standard Time (EST; GMT−5; Zone R), which comprises roughly the states on the Atlantic coast plus some other areas away from both the Gulf of Mexico and the Mississippi River.

Central Standard Time (CST; GMT−6; Zone S), which comprises roughly the states on the Mississippi River plus nearly a full state further west.

Mountain Standard Time (MST; GMT−7; Zone T), which comprises roughly the states that include the Continental Divide and Rocky Mountains plus much of the Great Basin and the watershed of the Colorado River.

Pacific Standard Time (PST; GMT−8; Zone U), which comprises roughly the states on the Pacific coast, plus Nevada.

Zones used in states beyond the contiguous USA

Alaska Standard Time (AKST; GMT−9; Zone V), which comprises most of the state of Alaska.

Hawaii-Aleutian Standard Time (or unofficially Hawaii Standard Time) (HST; GMT−10; zone W), which includes Hawaii and most of the length of the Aleutian Islands chain (west of 16930'W).

Zones outside the United States:

Atlantic Standard Time (AST, GMT−4, Zone Q), which comprises Puerto Rico and the U.S. Virgin Islands.

Samoa Standard Time (GMT−11, Zone X), which comprises American Samoa.

Chamorro Standard Time (GMT+10, Zone K), which comprises Guam and the Northern Mariana Islands.

Time Zones: EST / CST / MST / PST

USA Currency: US Dollar


USA & Canada clocks
on Daylight Saving Time until:
Sunday 1 November 2015 2am local time

EU / UK clocks on
GMT until:

Sunday 29 March 1am GMT

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USA Time Zones

Alaska Time | Central Time | Eastern Time | Hawaii Time | Mountain Time | Pacific Time
Daylight Saving Time

USA Cities

Albany NY Time | Augusta GA Time | Austin TX Time | Baltimore MD Time | Birmingham AL Time | Boston MA Time | Chicago IL Time | Cincinnati OH Time | Cleveland OH time | Columbus OH Time | Dallas TX Time | Denver CO Time | Detroit MI Time | Fort Worth TX Time | Houston TX Time | Indianapolis IN Time | Jackson MS Time | Jacksonville FL Time | Las Vegas NV Time | Los Angeles CA Time | Louisville KY Time | Memphis TN Time | Miami FL Time | New Orleans LA Time | New York City NY Time | Orlando FL Time | Phoenix AZ Time | Philadelphia PA Time | San Antonio TX Time | San Diego CA Time | San Francisco CA Time | San Jose CA Time | Washington  DC Time

USA States

Alabama Time | Alaska Time | Arizona Time | Arkansas Time | California Time | Colorado Time | Connecticut Time | DC Time | Delaware Time | Florida Time | Georgia Time | Hawaii Time | Idaho Time | Illinois Time | Indiana Time | Iowa Time | Kansas Time | Kentucky Time | Louisiana Time | Maine Time | Maryland Time | Massachusetts Time | Michigan Time | Minnesota Time | Mississippi Time | Missouri Time | Montana Time | Nebraska Time | Nevada Time | New Hampshire Time | New Jersey Time | New Mexico Time | New York Time | North Carolina Time | North Dakota Time | Ohio Time | Oklahoma Time | Oregon Time | Pennsylvania Time | Rhode Island Time | South Carolina Time | South Dakota Time | Tennessee Time | Texas Time | Utah Time | Vermont Time | Virginia Time | Washington State Time | West Virginia Time | Wisconsin Time | Wyoming Time |  

US Websites

Phone Area Code Look-up | Colleges & Universities | Stadiums | US Dollar | Franchises | Affiliate Programs

Atlantic Time Converter ] Central Time Converter ] Eastern Time Converter ] Mountain Time Converter ] Pacific Time Converter ]

LA Time

United States of America (USA)

North America

Time Zones
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Last revised: August 03, 2013 02:36 +0100 GMT  What's the time? EST ~ CST ~ MST ~ PST ~ AKST ~ HST

United States Time Zone Convertors