UTC-4

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), in the Caribbean region this is considered as the Eastern Caribbean (ECT) timezone. There are possibly other various names in other countries.

Areas using UTC−4

Single zone countries without DST

• Anguilla (ECT - Eastern Caribbean Time Zone)
• Antigua and Barbuda (ECT - Eastern Caribbean Time Zone)
• Aruba
• Barbados (ECT - Eastern Caribbean Time Zone)
• Bolivia
• Dominica (ECT - Eastern Caribbean Time Zone)
• Dominican Republic
• Grenada (ECT - Eastern Caribbean Time Zone)
• Guadeloupe
• Guyana
• Martinique
• Montserrat (ECT - Eastern Caribbean Time Zone)
• Netherlands Antilles
• Puerto Rico (AST—Atlantic Standard Time)
• Saint Kitts and Nevis (ECT - Eastern Caribbean Time Zone)
• Saint Lucia (ECT - Eastern Caribbean Time Zone)
• Saint Vincent and the Grenadines (ECT - Eastern Caribbean Time Zone)
• Trinidad and Tobago (ECT - Eastern Caribbean Time Zone)

Single zone countries with DST

• Bermuda*
• Falkland Islands**
• Paraguay**

Multizone countries

• Brazil
  • Acre
  • Amazonas
  • Mato Grosso**,
  • Mato Grosso do Sul**,
  • Rondônia,
  • Roraima
• Canada (AST—Atlantic Standard Time)
  • Labrador (all but southeastern tip)*,
  • New Brunswick*,
  • Nova Scotia*,
  • Prince Edward Island*,
  • Quebec (east of the 63°W longitude)
• Chile
  • Mainland (all of Chile except Easter Island)**
• Greenland—Kalaallit Nunaat
  • northwestern
    • Pituffik area* (observes United States daylight saving time rules)
• Virgin Islands
  • British Virgin Islands and
  • U.S. Virgin Islands (AST——Atlantic Standard Time)
• United States—North American Eastern Time Zone during daylight saving time

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