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.
|Coordinated Universal Time (UTC)||Greenwich Mean Time (GMT)|
EST to UTC call time Best time for a conference call or a meeting is between 8am-1pm in EST which corresponds to 1pm-6pm in UTC 7:30 am Eastern Daylight Time (EDT). GOES-East - Sector view: U.S. Atlantic Coast - Band 8 2 hour loop - 24 images - 5 minute update. To enlarge, pause animation & click the image. Hover over popups to zoom. 03 May 2021 - 0006 UTC About Band 8. 6.2 µm - 'Upper-level Water Vapor' Band - 2 km resolution - Band 8 will be used for upper-level tropospheric water vapor tracking. This time zone converter lets you visually and very quickly convert EST to UTC and vice-versa. Simply mouse over the colored hour-tiles and glance at the hours selected by the column. EST stands for Eastern Standard Time. UTC is known as Universal Time. This time zone converter lets you visually and very quickly convert UTC to EST and vice-versa. Simply mouse over the colored hour-tiles and glance at the hours selected by the column. UTC stands for Universal Time. EST is known as Eastern Standard Time. Eastern Time (ET): EST and EDT. The Eastern Time Zone (ET) is an area 5 hours behind Greenwich Mean Time during the winter months (referred to as Eastern Standard Time or EST) and 4 hours behind Greenwich Mean Time during the summer months (referred to as Eastern Daylight Time or EDT).
United States GMT/UTC Offsets
|Time Zone in United States||Examples of places in the United States using these Time Zones||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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Eastern Daylight Time is 4 hours behind of Universal Time Coordinated
4:30 am04:30 in EDT is 8:30 am08:30 in UTC
EST to UTC call time
Best time for a conference call or a meeting is between 8am-1pm in EST which corresponds to 1pm-6pm in UTC
4:30 am04:30 Eastern Daylight Time (EDT). Offset UTC -4:00 hours
8:30 am08:30 Universal Time Coordinated (UTC). Offset UTC 0:00 hours
4:30 am04:30 EDT / 8:30 am08:30 UTC
Eastern Standard Time
Offset: EST is 5 hours behind Greenwich Mean Time (GMT) and is used in North America
Countries: It is used in following countries: Bahamas, Canada, Haiti, Jamaica, Cayman Islands, Mexico, Panama, Turks & Caicos Is, United States
Principal Cities: The largest city in the EST timezone is New York City from USA with population about 8.175 million people. Other major cities in the area are Toronto, Montreal, Brooklyn, Borough of Queens
Daylight Saving: This is a standard timezone, however during summer some places adjust time for one hour forward for daylight saving and observe Eastern Daylight Time (EDT).
End: EST ended and clocks were set one hour forward on Sunday, 14 March 2021, at 2:00 (2:00 am) local time.
Start: EST starts and clocks are set one hour back on Sunday, 07 November 2021, at 2:00 (2:00 am) local time.
French: HNE - Heure Normale de l'Est
Spanish: ET - Tiempo del Este, ET - Zona Sureste
EST representations, usage and related time zonesW3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
Utc Time East Coast Usa
- -05 - basic short
- -0500 - basic
- -05:00 - extended
- -0500 - sign character (-) followed by a four digit time providing hours (05) and minutes (00) of the offset. Indicates five hour and zero minutes time differences to the west of the zero meridian.
Utc Time Zone Map
- Romeo - Military abbreviation for EST
- R - short form of 'Romeo'
East Coast Utc Time ZoneTime zones with the GMT -5 offset:
- CDT - Central Daylight Time
- EST - Eastern Standard Time
- ET - Eastern Time
- COT - Colombia Time
- CST - Cuba Standard Time
- EASST - Easter Island Summer Time
- ECT - Ecuador Time
- PET - Peru Time
- R - Romeo Time Zone
- GMT - GMT-05:00
- -05 -
Universal Time Coordinated
Walmart over the toilet. Offset: UTC is 0 hours ahead Greenwich Mean Time (GMT) and is used in Universal
Coordinated Universal Time (UTC) is the world time standard that regulates clocks and time. It is successor to Greenwich Mean Time (GMT). For casual use, UTC is the same as GMT, but is used by the scientific community.
UTC is the time standard commonly used across the world since 1972. It is used in many technical fields, like aviation industry and meteorologists, also used to synchronize time across internet networks.
UTC representations, usage and related time zonesW3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
- Z - is the zone designator for the zero UTC/GMT offset, also known as 'Zulu' time
- +00 - basic short
- +0000 - basic
- +00:00 - extended
- +0000 - sign character (+) followed by a four digit time providing hours (00) and minutes (00) of the offset. Indicates zero hour and zero minutes time differences of the zero meridian.
- Zulu - Military abbreviation for UTC
- Z - short form of 'Zulu'
- EGST - Eastern Greenland Summer Time
- GMT - Greenwich Mean Time
- WET - Western European Time
- AZOST - Azores Summer Time
- UTC - Universal Time Coordinated
- WT - Western Sahara Standard Time
- Z - Zulu Time Zone
- GMT - GMT
- +00 -