Coordinated Universal Time (UTC) is used as the official world reference for time. Coordinated Universal Time replaced the use of Greenwich Mean Time (GMT) in 1972. You will often see time zones represented similar to UTC - 5h or GMT - 5h. In this example the (-5h) refers to that time zone being five hours behind UTC or GMT and so forth for the other time zones. UTC+5h or GMT +5h would refer to that time zone being five hours ahead of UTC of GMT and so forth for the other time zones.
The usage of UTC and GMT is based upon a twenty four hour clock, similar to military time, and is based upon the 0 degrees longitude meridian, referred to as the Greenwich meridian in Greenwich, England.
Coordinated Universal Time is based on cesium-beam atomic clocks, with leap seconds added to match earth-motion time, where as Greenwich Mean Time is based upon the Earth's rotation and celestial measurements. Coordinated Universal Time is also known Zulu Time or Z time.
In areas of the United States that observe Daylight Saving Time local residents will move their clocks ahead one hour when Daylight Saving Time begins. As a result, their UTC or GMT offset would change from UTC -5h or GMT - 5h to UTC -4h or GMT - 4h. In places not observing Daylight Saving Time the local UTC or GMT offset will remain the same year round. Arizona, Puerto Rico, Hawaii, U.S. Virgin Islands and American Samoa do not observe Daylight Saving Time.
In the United States Daylight Saving Time begins at 2:00 a.m. local time on the second Sunday in March. On the first Sunday in November areas on Daylight Saving Time return to Standard Time at 2:00 a.m. The names in each time zone change along with Daylight Saving Time. Eastern Standard Time (EST) becomes Eastern Daylight Time (EDT), and so forth. A new federal law took effect in March 2007 which extends Daylight Saving Time by four weeks.
The United States uses nine standard time zones. From east to west they 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) and Chamorro Standard Time (UTC+10). View the standard time zone boundaries.
9 AM ( 9:00 ) Universal Time to Your Local Time and Worldwide Time Conversions. Where and When is Z Observed? Zulu Time Zone is often used in aviation and the military as another name for UTC +0. Zulu Time Zone is also commonly used at sea between longitudes 7.5° West and 7.5° East. The letter Z may be used as a suffix to denote a time being in. UTC Home Home Communities Tools Search UTC Search. Enter your UTCID and Password U TCID: P assword: New User? Forgot/Change Password? University of Tennessee policy on 'Acceptable Use of Information Technology Resources' The University of Tennessee at Chattanooga. UTC = Coordinated Universal Time, or Zulu PST = Pacific Standard Time (UTC - 8 hours) ALDT = Alaskan Daylight Time (UTC - 8 hours) PDT = Pacific Daylight Time (UTC - 7 hours) MST = Mountain Standard Time (UTC - 7 hours) MDT = Mountain Daylight Time (UTC - 6 hours) CST = Central Standard Time (UTC - 6 hours) CDT = Central Daylight Time (UTC - 5 hours) EST = Eastern Standard Time (UTC - 5 hours). 19:00 UTC - nineteen o'clock UTC. See, what time is 19:00 UTC (Coordinated Universal Time) in your local time. 19:00 UTC - nineteen o'clock UTC. Sunrises & Sunsets Around The World COVID-19 Pandemic Longest Day 2021 Solar Eclipse June 2021 New York City, US Toronto, Canada London, UK North Pole Qaanaaq, Greenland Countdown to 2022 Earth Time Clock.
| Coordinated Universal Time (UTC) | Greenwich Mean Time (GMT) |
| Friday 05/07/21 11:12 AM UTC/GMT+00:00 | Friday 05/07/21 11:12 AM UTC/GMT+00:00 |
United States GMT/UTC Offsets | |||
| Time Zone in United States | Examples of places in the United States using these Time Zones | UTC Offset Standard Time | UTC Offset Daylight Saving Time |
| Atlantic | Puerto Rico, US Virgin Islands | UTC - 4h | N/A |
| Eastern | Connecticut, Delaware, Florida, Georgia, part of Indiana, part of Kentucky, Maine, Maryland, Massachusetts, Michigan, New Hampshire, New Jersey, New York, North Carolina, Ohio, Pennsylvania, Rhode Island, South Carolina, part of Tennessee, Vermont, Virginia, West Virginia and Washington, D.C. | UTC - 5h | UTC - 4h |
| Central | Alabama, Arkansas, Florida, Illinois, part of Indiana, Iowa, part of Kansas, part of Kentucky, Louisiana, part of Michigan, Minnesota, Mississippi, Missouri, Nebraska, North Dakota, Oklahoma, part of South Dakota, part of Tennessee, most of Texas, and Wisconsin | UTC - 6h | UTC - 5h |
| Mountain | Arizona*, Colorado, part of Idaho, part of Kansas, Montana, part of Nebraska, New Mexico, part of North Dakota, part of Oregon, part of South Dakota, part of Texas, Utah, and Wyoming | UTC - 7h | UTC - 6h * n/a for Arizona except in the Navajo Nation which does observe daylight saving time. |
| Pacific | California, part of Idaho, Nevada, most of Oregon, Washington | UTC - 8h | UTC - 7h |
| Alaska | Alaska and a portion of the Aleutian Islands that is east of 169 degrees 30 minutes west longitude observes the Alaska Time Zone. | UTC - 9h | UTC - 8h |
| Hawaii - Aleutian Unofficially often referred to as Hawaii Time Zone | Hawaii and a portion of the Aleutian Islands that is west of 169 degrees 30 minutes west longitude observes the Hawaii-Aleutian Standard Time Zone. Although Hawaii does not observe daylight saving time the Aleutian Islands do observe daylight saving time. | UTC - 10h | UTC - 9h Hawaii does not observe daylight saving time. A portion of the Aleutian Islands which observes the Hawaii - Aleutian time zone does observe daylight saving time. |
All dates are shown in the format: month/day/year
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Atlantic Daylight Time (ADT) • Eastern Daylight Time (EDT) • Central Daylight Time (CDT) • Mountain Daylight Time (MDT) • Pacific Daylight Time (PDT) • Alaska Daylight Time (AKDT) • Hawaii Time • Arizona • Saskatoon • New York • Toronto • Mexico City • San Francisco • Chicago • Houston • Miami • Phoenix • Halifax • Denver • Monterrey • Chihuahua
Europe Time Zones
Greenwich Mean Time (GMT) • British Summer Time (BST) • Western European Summer Time (WEST) • Central European Summer Time (CEST) • Eastern European Summer Time (EEST) • London • Paris • Berlin • Athens • Warsaw • Kiev • Belarus • Moscow • Madrid • Stockholm • Amsterdam • Istanbul
Australia, New Zealand Time Zones
AEST • ACST • AWST •New Zealand Time (NZT) • Queensland • Adelaide • Brisbane • Canberra • Melbourne • Perth • Sydney • Auckland • Fiji • Solomon Islands • Papua New Guinea
Asia Time Zones
India • Pakistan • China • UAE • Japan • Korea • Philippines • Thailand • Hong Kong • Taiwan • Malaysia • Singapore • Jakarta • Bangladesh • Sri Lanka • Nepal • Kuwait • Saudi Arabia • Viet Nam • Oman • Israel • Jordan • Beijing • Bangalore • Kuala Lumpur • Manila • Tokyo • Seoul • Karachi • Dubai
United States GMT/UTC Offsets | |||
| Time Zone in United States | Examples of places in the United States using these Time Zones | UTC Offset Standard Time | UTC Offset Daylight Saving Time |
| Atlantic | Puerto Rico, US Virgin Islands | UTC - 4h | N/A |
| Eastern | Connecticut, Delaware, Florida, Georgia, part of Indiana, part of Kentucky, Maine, Maryland, Massachusetts, Michigan, New Hampshire, New Jersey, New York, North Carolina, Ohio, Pennsylvania, Rhode Island, South Carolina, part of Tennessee, Vermont, Virginia, West Virginia and Washington, D.C. | UTC - 5h | UTC - 4h |
| Central | Alabama, Arkansas, Florida, Illinois, part of Indiana, Iowa, part of Kansas, part of Kentucky, Louisiana, part of Michigan, Minnesota, Mississippi, Missouri, Nebraska, North Dakota, Oklahoma, part of South Dakota, part of Tennessee, most of Texas, and Wisconsin | UTC - 6h | UTC - 5h |
| Mountain | Arizona*, Colorado, part of Idaho, part of Kansas, Montana, part of Nebraska, New Mexico, part of North Dakota, part of Oregon, part of South Dakota, part of Texas, Utah, and Wyoming | UTC - 7h | UTC - 6h * n/a for Arizona except in the Navajo Nation which does observe daylight saving time. |
| Pacific | California, part of Idaho, Nevada, most of Oregon, Washington | UTC - 8h | UTC - 7h |
| Alaska | Alaska and a portion of the Aleutian Islands that is east of 169 degrees 30 minutes west longitude observes the Alaska Time Zone. | UTC - 9h | UTC - 8h |
| Hawaii - Aleutian Unofficially often referred to as Hawaii Time Zone | Hawaii and a portion of the Aleutian Islands that is west of 169 degrees 30 minutes west longitude observes the Hawaii-Aleutian Standard Time Zone. Although Hawaii does not observe daylight saving time the Aleutian Islands do observe daylight saving time. | UTC - 10h | UTC - 9h Hawaii does not observe daylight saving time. A portion of the Aleutian Islands which observes the Hawaii - Aleutian time zone does observe daylight saving time. |
All dates are shown in the format: month/day/year
Terms of Use | Privacy | Contact
The information contained on this page is not authoritative and its use is subject to our Terms of Use.
Site Copyright © 2000-2021 TimeTemperature.com, Inc.
Atlantic Daylight Time (ADT) • Eastern Daylight Time (EDT) • Central Daylight Time (CDT) • Mountain Daylight Time (MDT) • Pacific Daylight Time (PDT) • Alaska Daylight Time (AKDT) • Hawaii Time • Arizona • Saskatoon • New York • Toronto • Mexico City • San Francisco • Chicago • Houston • Miami • Phoenix • Halifax • Denver • Monterrey • Chihuahua
Europe Time Zones
Greenwich Mean Time (GMT) • British Summer Time (BST) • Western European Summer Time (WEST) • Central European Summer Time (CEST) • Eastern European Summer Time (EEST) • London • Paris • Berlin • Athens • Warsaw • Kiev • Belarus • Moscow • Madrid • Stockholm • Amsterdam • Istanbul
Australia, New Zealand Time Zones
AEST • ACST • AWST •New Zealand Time (NZT) • Queensland • Adelaide • Brisbane • Canberra • Melbourne • Perth • Sydney • Auckland • Fiji • Solomon Islands • Papua New Guinea
Asia Time Zones
India • Pakistan • China • UAE • Japan • Korea • Philippines • Thailand • Hong Kong • Taiwan • Malaysia • Singapore • Jakarta • Bangladesh • Sri Lanka • Nepal • Kuwait • Saudi Arabia • Viet Nam • Oman • Israel • Jordan • Beijing • Bangalore • Kuala Lumpur • Manila • Tokyo • Seoul • Karachi • Dubai
Utc Zagreb
Africa Time ZonesWest Africa Time (WAT) • Central Africa Time (CAT) • East Africa Time (EAT) • Egypt • Nigeria • Kenya • Ghana • Morocco • Tanzania • Ethiopia • Uganda • South Africa • Cairo • Algiers • Casablanca • Accra • Lagos • Cape Town • Nairobi
South America Time Zones
Brazil • Argentina • Chile • Peru • Ecuador • Colombia • Venezuela • Panama • Puerto Rico • São Paulo • Manaus • Rio de Janeiro • Buenos Aires • Santiago • Lima • Quito • Bogota • Caracas
Russia Time Zones
Utc Zoom
Moscow • Novosibirsk • Yekaterinburg • Omsk • St Petersburg • Kazan • Irkutsk • Chita • Vladivostok • Sochi • Almaty • Kyrgyzstan • Uzbekistan • Tajikistan
