UTC−04:00

UTC−04:00 makes clocks four hours earlier than Greenwich Mean Time. 

These are the places who are on the UTC−04:00 time zone.

As standard time (all year round)
ECT - Eastern Caribbean Time Zone
Anguilla (UK)
Antigua and Barbuda
Barbados
Dominica
Grenada
Montserrat (UK)
Saint Kitts and Nevis
Saint Lucia
Saint Vincent and the Grenadines
Trinidad and Tobago
British Virgin Islands (UK)

Atlantic Standard Time
Puerto Rico (US)
U.S. Virgin Islands (US)

Other Caribbean
Aruba
Curaçao
Dominican Republic
Guadeloupe (France)
Martinique (France)
Sint Maarten

South America
Bolivia
Guyana
Brazil - parts of Amazonas, Mato Grosso, Mato Grosso do Sul, Rondônia, Roraima

North America
Canada - Quebec (east of the 63°W longitude)

As standard time (Northern Hemisphere winter)
Atlantic Standard Time
Bermuda (UK)
Canada
all of New Brunswick (legally offset from GMT), Nova Scotia (legally offset from GMT), Prince Edward Island 
Newfoundland and Labrador - most of Labrador
Greenland (Denmark) (Kalaallit Nunaat)- northwestern (observes United States daylight saving time rules)

As standard time (Southern Hemisphere winter)
South America
Chile - Mainland. See also Time in Chile
Falkland Islands
Paraguay

As daylight saving time (Northern Hemisphere summer)
Caribbean
Bahamas
Cuba
Turks and Caicos Islands (UK)

Eastern Daylight Time
Canada
Nunavut (eastern), most of Ontario and most of Quebec
United States
All of Connecticut, Delaware, District of Columbia, Georgia (U.S. state), Maine, Maryland,Massachusetts, New Hampshire, New Jersey,New York, North Carolina, Ohio, Pennsylvania, Rhode Island, South Carolina, Vermont, Virginia, West Virginia
Most of Florida, Indiana, Michigan
Eastern parts of Kentucky, Tennessee

References

Category:UTC offsets