This is a list of the time offsets by U.S. states, federal district, and territories . For more about the time zones of the U.S. see time in the United States.
Most states are entirely contained within one time zone. However, some states are in two time zones, due to geographical, socio-political or economic reasons.
| State federal district or territory | Time Offsets | DST | Details | Map |
|---|---|---|---|---|
 Alabama | UTC−06:00 CT | Yes | Central Standard Time (Phenix City observes Eastern time on a de facto basis) | |
 Alaska | UTC−09:00 AKT | Yes | Most of state: UTC−09:00 AKST Alaska Standard Time | |
| UTC−10:00 HT | Aleutian Islands (west of 169°30' W): UTC−10:00 HST Hawaii–Aleutian Standard Time | |||
 American Samoa | UTC−11:00 ST | No | Samoa Standard Time | |
 Arizona | UTC−07:00 MT | Part | Mountain Standard Time. Except for the Navajo Nation, Arizona does not observe DST. | |
 Arkansas | UTC−06:00 CT | Yes | Central | |
 California | UTC−08:00 PT | Yes | Pacific Standard Time | |
 Colorado | UTC−07:00 MT | Yes | Mountain | |
 Connecticut | UTC−05:00 ET | Yes | Eastern Standard Time | |
 Delaware | UTC−05:00 ET | Yes | Eastern | |
 District of Columbia | UTC−05:00 ET | Yes | Eastern | |
 Florida | UTC−05:00 ET | Yes | Big Bend and peninsula regions east of the Apalachicola River along with the portion of Gulf County south of the Intracoastal Waterway: UTC−05:00 EST Eastern Standard Time |  |
| UTC−06:00 CT | Florida Panhandle West of the Apalachicola River except for the portion of Gulf County south of the Intracoastal Waterway: UTC−06:00 CST Central Standard Time | |||
 Georgia | UTC−05:00 ET | Yes | Eastern | |
 Guam | UTC+10:00 ChT | No | Chamorro Standard Time | |
 Hawaii | UTC−10:00 HT | No | Hawaii–Aleutian | |
 Idaho | UTC−07:00 MT | Yes | Most of state: UTC−07:00 MST Mountain Standard Time (A legislative error in 1923 in the Calder Act seemingly put this area at UTC−06:00 CST, and was corrected by Congress in 2007. [1] ) 15 U.S.C. ch. 6, § 264. MST has been observed since 1923. |  |
| UTC−08:00 PT | North of the Salmon River, that is between the Oregon state border and the Idaho County/Lemhi County border; west of the Idaho County/Lemhi County border, that is between the Salmon River and the Montana state border: UTC−08:00 PST Pacific Standard Time | |||
 Illinois | UTC−06:00 CT | Yes | Central | |
 Indiana | UTC−05:00 ET | Yes | Most of state: UTC−05:00 EST Eastern Standard Time |  |
| UTC−06:00 CT | Northwest and southwest corners: UTC−06:00 CST Central Standard Time (See Time in Indiana for more information) | |||
 Iowa | UTC−06:00 CT | Yes | Central | |
 Kansas | UTC−06:00 CT | Yes | Most of state: UTC−06:00 CST Central Standard Time |  |
| UTC−07:00 MT | Greeley, Hamilton, Sherman and Wallace counties: UTC−07:00 MST Mountain Standard Time | |||
 Kentucky | UTC−05:00 ET | Yes | Eastern 60% of state: UTC−05:00 EST Eastern Standard Time |  |
| UTC−06:00 CT | Western 40% of state: UTC−06:00 CST Central Standard Time | |||
 Louisiana | UTC−06:00 CT | Yes | Central | |
 Maine | UTC−05:00 ET | Yes | Eastern | |
 Maryland | UTC−05:00 ET | Yes | Eastern | |
 Massachusetts | UTC−05:00 ET | Yes | Eastern | |
 Michigan | UTC−05:00 ET | Yes | Most of state: UTC−05:00 EST Eastern Standard Time |  |
| UTC−06:00 CT | Upper Peninsula counties bordering Wisconsin: UTC−06:00 CST Central Standard Time | |||
 Minnesota | UTC−06:00 CT | Yes | Central | |
 Mississippi | UTC−06:00 CT | Yes | Central | |
 Missouri | UTC−06:00 CT | Yes | Central | |
 Montana | UTC−07:00 MT | Yes | Mountain | |
 Nebraska | UTC−06:00 CT | Yes | Most of state: UTC−06:00 CST Central Standard Time | |
| UTC−07:00 MT | Nebraska Panhandle, counties with Colorado as a western boundary, and the western Sand Hills: UTC−07:00 MST Mountain Standard Time | |||
 Nevada | UTC−07:00 MT | Yes | West Wendover city limits: UTC−07:00 MST Mountain Standard Time | |
| UTC−08:00 PT | Most of state: UTC−08:00 PST Pacific Standard Time | |||
 New Hampshire | UTC−05:00 ET | Yes | Eastern | |
 New Jersey | UTC−05:00 ET | Yes | Eastern | |
 New Mexico | UTC−07:00 MT | Yes | Mountain | |
 New York | UTC−05:00 ET | Yes | Eastern | |
 North Carolina | UTC−05:00 ET | Yes | Eastern | |
 North Dakota | UTC−06:00 CT | Yes | Most of state: UTC−06:00 CST Central Standard Time |  |
| UTC−07:00 MT | West of the Missouri River (except Morton and Oliver counties, and parts of Dunn, McKenzie, and Sioux counties: UTC−07:00 MST Mountain Standard Time | |||
 Northern Mariana Islands | UTC+10:00 ChT | No | Chamorro | |
 Ohio | UTC−05:00 ET | Yes | Eastern | |
 Oklahoma | UTC−06:00 CT | Yes | Central (Kenton observes Mountain time on a de facto basis) | |
 Oregon | UTC−07:00 MT | Yes | Northern 80% of Malheur County: UTC−07:00 MST Mountain Standard Time |  |
| UTC−08:00 PT | Most of state: UTC−08:00 PST Pacific Standard Time | |||
 Pennsylvania | UTC−05:00 ET | Yes | Eastern | |
 Puerto Rico | UTC−04:00 AT | No | Atlantic Standard Time | |
 Rhode Island | UTC−05:00 ET | Yes | Eastern | |
 South Carolina | UTC−05:00 ET | Yes | Eastern | |
 South Dakota | UTC−06:00 CT | Yes | Eastern half of state: UTC−06:00 CST Central Standard Time | |
| UTC−07:00 MT | Western half of state: UTC−07:00 MST Mountain Standard Time | |||
 Tennessee | UTC−05:00 ET | Yes | East Tennessee, except Bledsoe, Cumberland, and Marion Counties: UTC−05:00 EST Eastern Standard Time |  |
| UTC−06:00 CT | Most of state: UTC−06:00 CST Central Standard Time | |||
 Texas | UTC−06:00 CT | Yes | Most of state: UTC−06:00 CST Central Standard Time |  |
| UTC−07:00 MT | El Paso and Hudspeth counties: UTC−07:00 MST Mountain Standard Time | |||
 U.S. Minor Outlying Islands | UTC+12:00 UTC−12:00 UTC−11:00 ST UTC−10:00 HT UTC−05:00 ET | No | Wake Island: UTC+12:00 (Wake Island Time Zone) Baker Island and Howland Island: UTC−12:00 Jarvis Island, Kingman Reef, Midway Atoll, and Palmyra Atoll: UTC−11:00 (Samoa Time) Johnston Atoll: UTC−10:00 (Hawaii–Aleutian Time) | |
 Utah | UTC−07:00 MT | Yes | Mountain | |
 Vermont | UTC−05:00 ET | Yes | Eastern | |
 U.S. Virgin Islands | UTC−04:00 AT | No | Atlantic | |
 Virginia | UTC−05:00 ET | Yes | Eastern | |
 Washington | UTC−08:00 PT | Yes | Pacific | |
 West Virginia | UTC−05:00 ET | Yes | Eastern | |
 Wisconsin | UTC−06:00 CT | Yes | Central | |
 Wyoming | UTC−07:00 MT | Yes | Mountain |
Project Gutenberg (PG) is a volunteer effort to digitize and archive cultural works, as well as to "encourage the creation and distribution of eBooks." It was founded in 1971 by American writer Michael S. Hart and is the oldest digital library. Most of the items in its collection are the full texts of books or individual stories in the public domain. All files can be accessed for free under an open format layout, available on almost any computer. As of 13 February 2024, Project Gutenberg had reached 70,000 items in its collection of free eBooks.
The Panama Canal is an artificial 82-kilometer (51-mile) waterway in Panama that connects the Atlantic Ocean with the Pacific Ocean, cutting across the Isthmus of Panama, and is a conduit for maritime trade. Locks at each end lift ships up to Gatun Lake, an artificial fresh water lake 26 meters (85 ft) above sea level, created by damming up the Chagres River and Lake Alajuela to reduce the amount of excavation work required for the canal. Locks then lower the ships at the other end. An average of 200,000,000 L (52,000,000 US gal) of fresh water is used in a single passing of a ship. The canal is threatened by low water levels during droughts.
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The military time zones are a standardized, uniform set of time zones for expressing time across different regions of the world, named after the NATO phonetic alphabet. The Zulu time zone (Z) is equivalent to Coordinated Universal Time (UTC) and is often referred to as the military time zone. The military time zone system ensures clear communication in a concise manner, and avoids confusion when coordinating across time zones. The CCEB, representing the armed forces of Australia, Canada, New Zealand, the United Kingdom, and the United States, publishes the military time zone system as the ACP 121 standard. The armed forces of Austria and many nations in NATO use it.
Guam The following outline is provided as an overview of and topical guide to Guam:
Time in Tunisia is given by a single time zone, officially denoted as Central European Time. Tunisia adopted WAT on 12 April 1911, and does not observe daylight saving time, though previously it has.
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