UTC−04:00

UTC−04: Blue (December), Orange (June), Yellow (all year round), Light Blue - Sea areas

UTC−04 is an identifier for a time offset from UTC of −04.

This offset is used in the Atlantic Standard Time Zone in Canada and the North American Eastern Time Zone during daylight saving time (DST), in the Caribbean region this is considered as the Eastern Caribbean (ECT) timezone. There are possibly other various names in other countries.

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 - Acre, Amazonas, 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

• Brazil - Mato Grosso, Mato Grosso do Sul
• 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