Eastern Time Zone (north America)

Information about Eastern Time Zone (north America)

"Eastern Time Zone" redirects here. For other uses, see the disambiguation pages above.

Metronome, a public art installation showing the time in New York City

The Eastern Time Zone (ET) of the Western Hemisphere falls mostly along the east coast of Northern America and the west coast of South America. Its time offset is UTC-5 during standard time and UTC-4 during daylight saving time. The clock time in this zone is based on the mean solar time of the 75th degree meridian west of the Greenwich Observatory.

In the United States and Canada, this time zone is generally called Eastern Time (ET). Specifically, it is Eastern Standard Time (EST) when observing standard time (Winter), and Eastern Daylight Time (EDT) when observing daylight saving time (Summer). The 1966 Uniform Time Act in the USA meant that EDT was instituted on the last Sunday in April, starting in 1966, throughout most of the USA. ^[1] EST would be re-instituted on the last Sunday in October. The act was amended to make the first Sunday in April the beginning of EDT as of 1987.^[1] In some areas, starting in 2007, the local time changes at 02:00 EST to 03:00 EDT on the second Sunday in March and returns at 02:00 EDT to 01:00 EST on the first Sunday in November^[1]. In Canada the time changes as the US does.

The modern code for Eastern Time Zone is "America/New_York". ^[2]

Usage

North America

Canada

In Canada, the following provinces and territories are part of the Eastern Time Zone:

Ontario (excluding areas west of Thunder Bay but including Atikokan)
Quebec (excluding far eastern Côte-Nord and the Magdalen Is.)
East-central Nunavut (including part of Melville Pen. and most of Ellesmere and Baffin Is., including Iqaluit; Southampton Island does not observe DST)

United States

In the United States, the following states are part of the Eastern Time Zone in their entirety:

The exact specification for the location of time zones and the dividing line between zones is set forth in the Code of Federal Regulations at 49 CFR 71.^[3]

North American Eastern Time Zone (shown in the furthest right yellow)

Parts of several other states use Eastern Time as well:

nearly all of Florida except for the part of the panhandle west of the Apalachicola River. Approaching the Gulf of Mexico, the line jumps west to the Bay/Gulf county line.
most of Indiana (all except the Evansville metropolitan area and the suburbs of Chicago, Illinois)
all of Kentucky from the Louisville metropolitan area eastward
all of Michigan except the four Upper Peninsula counties that border Wisconsin (Gogebic, Iron, Dickinson, Menominee)
the eastern third of Tennessee, almost but not precisely coterminous with the region legally designated as East Tennessee
some towns in eastern Alabama, including Phenix City, Smiths Station, Lanett, and Valley, observe Eastern Time, although they are officially in the Central Time Zone. This is primarily because they are part of the Columbus, Georgia media market.^[4]

Other countries

The following countries that use Eastern Time Zone include:

Mexico - the eastern state of Quintana Roo also followed EST for a brief period in the 1990s
Panama
Jamaica
Haiti
Cuba
the Bahamas
Not all Caribbean countries observe Daylight saving time. Most Eastern Caribbean states are in the UTC-4 timezone, which is known in North America as the Atlantic Time Zone and is the equivalent of EDT and one hour ahead of EST.

South America

In South America this time zone is observed in:

Colombia
Ecuador (except Galápagos)
Peru
Parts of Brazil:
the state of Acre
Amazonas - the southwestern region of the state.

Major Metropolitan Areas

Sources

References

1. ^ Prerau , David (2006 ). Early adoption and U.S. Law (HTML ). Daylight Saving Time . Web Exhibit . Retrieved on 2007-04-23.
2. ^ Law, Gwillim (2007-09-21). United States Time Zones (HTML).
3. ^ The specification for the Eastern Time Zone is set forth at 49 CFR 71.4, and is listed in Text and pdf formats.
The boundary between Eastern and Central is set forth at 49 CFR 71.5, and is listed in text and pdf formats.
4. ^ McDearman, Brian. "Parts of Eastern Alabama split between 2 time zones", The Decatur Daily, 2006-08-13. Retrieved on 2006-12-18.

• • [ e] Time zones in North America

Time Zone	UTC-10	UTC-9	UTC-8	UTC-7	UTC-6	UTC-5	UTC-4		UTC-3
Name	Hawaii-Aleutian Standard	Alaska Standard Hawaii-Aleutian Daylight	Pacific Standard Alaska Daylight	Mountain Standard Pacific Daylight	Central Standard Mountain Daylight	Eastern Standard Central Daylight	Atlantic Standard Eastern Daylight	Newfoundland Standard	Atlantic Daylight	Newfoundland Daylight

Western Hemisphere, also Western hemisphere^[1] or western hemisphere,^[2] is a geographical term for the half of the Earth that lies west of the Prime Meridian (which crosses Greenwich in London, England, United Kingdom), the other half being the
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Northern America is the northernmost region of the Americas, distinct from but part of the North American continent, including all territories north of Middle America. Geopolitically, according to the scheme of geographic regions and subregions used by the United Nations, Northern
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South America is a continent of the Americas, situated entirely in the Western Hemisphere and mostly in the Southern Hemisphere. It is bordered on the west by the Pacific Ocean and on the north and east by the Atlantic Ocean; North America and the Caribbean Sea lie
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A time offset is defined by international convention as a number of hours and minutes from Coordinated Universal Time in Greenwich, England. Many time zones employ two time offsets, one for standard time and one for daylight saving time.
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UTC−5 is the time offset used in the North American Central Time Zone during Daylight Saving Time.

For North America see also Eastern Standard Time and Central Daylight Time.
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Standard time is the result of synchronizing clocks in different geographical locations within a time zone to the same time rather than using the local meridian as in local mean time or solar time. The time so set has come to be defined in terms of offsets from Universal Time.
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UTC−4 is the time offset used in the Atlantic Standard Time Zone in Canada in winter and the North American Eastern Time Zone during daylight saving time (DST), as well as other countries.
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Daylight saving time (DST; also summer time in British English) is the convention of advancing clocks so that afternoons have more daylight and mornings have less.
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Solar times are measures of the apparent position of the Sun on the celestial sphere. They are not actually the physical time, but rather hour angles, that is, angles expressed in time units.
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meridian (or line of longitude) is an imaginary arc on the Earth's surface from the North Pole to the South Pole that connects all locations with a given longitude. The position of a point on the meridan is given by the latitude.
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Royal Observatory, Greenwich (formerly the Royal Greenwich Observatory or RGO) was commissioned in 1675 by King Charles II, with the foundation stone being laid on 10 August.
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Motto
"In God We Trust" (since 1956)
"E Pluribus Unum" ("From Many, One"; Latin, traditional)
Anthem
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This page is currently protected from editing until disputes have been resolved.
Protection is not an endorsement of the current [ version] ([ protection log]).
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Winter is one of the four seasons of temperate zones. Almost all English-language calendars, going by astronomy, state that winter begins on the winter solstice, and ends on the spring equinox.
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Summer is one of the four seasons of the year. In the West, the seasons are generally considered to start at the equies and solstices, based on astronomical reckoning. In English-language calendars, based on astronomy, summer begins on the day of the summer solstice and ends on the
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The Uniform Time Act (Pub.L. 89-387, April 13 1966, 80 Stat. 107, ) is a 1966 United States federal law whose effect was to simplify the official pattern of where and when Daylight saving time (DST) is applied within the U.S.
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19th century - 20th century - 21st century
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1963 1964 1965 - 1966 - 1967 1968 1969

Year 1966 (MCMLXVI
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19th century - 20th century - 21st century
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1984 1985 1986 - 1987 - 1988 1989 1990

Year 1987 (MCMLXXXVII
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20th century - 21st century - 22nd century
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2007 by topic:
News by month
Jan - Feb - Mar - Apr - May - Jun
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Canada

This article is part of the series:
Politics and government of
Canada

Federal
Executive (The Crown)
Sovereign (Queen Elizabeth II)
Governor General (Michalle Jean)
Queen's Privy Council for Canada
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Ontario

Flag Coat of arms
Motto: Ut Incepit Fidelis Sic Permanet (Latin: Loyal she began, loyal she remains)

Capital Toronto
Largest city Toronto
Official languages English (de facto)
Government
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Thunder Bay, Ontario
Downtown Port Arthur in Thunder Bay

Flag
Logo
Nickname: Lakehead; The Lakehead; Head of the Lakes
Motto: Superior by nature
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Township of Atikokan, Ontario
Coordinates:
Country Canada
Province Ontario
Region Northwestern Ontario
District Rainy River District
Settled 1899
Government
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Québec
Quebec ^[1]

Flag Coat of arms
Motto: Je me souviens (French: I remember)

Capital Quebec City
Largest city Montreal
Official languages French
Government
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Map of Côte-Nord in relation to Quebec.
Country Canada
Province Quebec
Area
- Region 247627.06 km (95,609.
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The Magdalen Islands (French, Îles de la Madeleine) form a small archipelago in the Gulf of Saint Lawrence with a land area of 205.53 km² (79.36 sq mi). Though closer to Prince Edward Island and Nova Scotia, the islands form part of Quebec.
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Nunavut

Flag Coat of arms
Motto: Nunavut Sannginivut
(Inuktitut: Our land, our strength)

Capital Iqaluit
Largest city Iqaluit
Official languages Inuktitut, Inuinnaqtun, English, French
Government
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