UTC−04:00

UTC−04:00 is an identifier for a time offset from UTC of −04:00.
It is observed in the Eastern Time Zone during the warm months of daylight saving time, as Eastern Daylight Time. The Atlantic Time Zone observes it during standard time.
It is observed all year in the Eastern Caribbean and several South American countries.

As standard time (Northern Hemisphere winter)

Principal cities: Halifax, Saint John, Fredericton, Hamilton

North America

Canada – Atlantic Time Zone
*New Brunswick
*Newfoundland and Labrador
**Labrador
***Except the area between L'Anse-au-Clair and Norman Bay
*Nova Scotia
*Prince Edward Island
Denmark
*Greenland
**Pituffik (Thule), Qaanaaq
United Kingdom
*Bermuda

As daylight saving time (Northern Hemisphere summer)

Principal cities: New York, Washington, Philadelphia, Boston, Atlanta, Miami, Detroit, Baltimore, Cleveland, Pittsburgh, Indianapolis, Orlando, Charlotte, Charleston, Wilmington, Key West, Toronto, Montreal, Ottawa, Quebec City, Iqaluit, Nassau, Havana, Kingston, Port-au-Prince, Cockburn Town, Providenciales

North America

Canada
*Nunavut
**Qikiqtaaluk Region except Resolute
*Ontario
**East of 90° West longitude
*Quebec
**Most of province except easternmost part of Côte-Nord
United States
*Delaware
*District of Columbia
*Florida
**Entire state except the counties of Bay, Calhoun, Escambia, Holmes, Jackson, Okaloosa, Santa Rosa, Walton, and Washington, and northern Gulf county
*Georgia
*Indiana
**Except the northwestern counties of Jasper, Lake, LaPorte, Newton, Porter and Starke, and the southwestern counties of Gibson, Perry, Posey, Spencer, Vanderburgh and Warrick
*Kentucky
**Counties to the east of the counties of Breckinridge, Grayson, Hart, Green, Adair, Russell and Clinton
*Maryland
*Michigan
**Except the western counties of Dickinson, Gogebic, Iron and Menominee
*New England
*New Jersey
*New York
*North Carolina
*Ohio
*Pennsylvania
*South Carolina
*Tennessee
**The counties of Scott, Morgan, Roane, Rhea, Meigs and Bradley, and all counties to the east of these
*Virginia
*West Virginia

Caribbean

Bahamas
Cuba
Dominican Republic
Haiti
United Kingdom
*Turks and Caicos Islands

As standard time (year-round)

Principal cities: Caracas, Manaus, La Paz, Georgetown, Santa Cruz de la Sierra, St. John's, Bridgetown, Roseau, Santo Domingo, Gustavia, St. George's, The Bottom, Oranjestad, Philipsburg, Lower Prince's Quarter, Basseterre, Castries, Kingstown, Port of Spain, San Fernando, [Trinidad and Tobago|San Fernando], The Valley, Road Town, Plymouth, Brades, Little Bay, San Juan, Charlotte Amalie, Oranjestad, Kralendijk, Willemstad, Pointe-à-Pitre, Les Abymes, Fort-de-France, Maracaibo, Blanc-Sablon, Harrington Harbour

South America

Bolivia
Brazil
*The states of Amazonas, Mato Grosso, Mato Grosso do Sul, Rondônia and Roraima
Guyana
Venezuela

Eastern Caribbean

US territories

Other Caribbean locales

Netherlands
*Aruba
*Bonaire
*Curaçao

North America

Canada – Atlantic Time Zone
*Quebec
**East of the 63°W longitude

Antarctica

Southern Ocean

Some bases in Antarctica. See also Time in Antarctica
*Brazil
**Comandante Ferraz Antarctic Station
*Russia
**Bellingshausen Station

As standard time (Southern Hemisphere winter)

Principal cities: Santiago

South America

Chile

Antarctica

Some bases in Antarctica. See also Time in Antarctica