UTC−03:00
UTC−03:00 is an identifier for a time offset from UTC of −03:00.
As standard time (Northern Hemisphere winter)
Atlantic Ocean
- France
- *Saint Pierre and Miquelon
As daylight saving time (Northern Hemisphere summer)
Principal cities: Halifax, Saint John, Fredericton, Hamilton, SydneyNorth America
- Canada – Atlantic Time Zone
- *New Brunswick
- *Newfoundland and Labrador
- **Labrador
- ***Except the area between L'Anse-au-Clair and Norman's Bay
- *Nova Scotia
- *Prince Edward Island
- Denmark
- *Greenland, but with DST rules from the US
- **Pituffik Space Base
- United Kingdom
- *Bermuda
As standard time (year-round)
Principal cities: Cayenne, São Paulo, Brasília, Rio de Janeiro, Porto Alegre, Belo Horizonte, Buenos Aires, Montevideo, Paramaribo, Stanley, AsunciónSouth America
- Argentina
- Brazil
- *Except the western states of Acre, Amazonas, Mato Grosso, Mato Grosso do Sul, Rondônia and Roraima; and offshore islands
- Chile
- *Magallanes/Antarctic
- France
- *French Guiana
- Paraguay
- Suriname
- United Kingdom
- *Falkland Islands
- Uruguay
Antarctica
Southern Ocean
- Some bases on the Antarctic Peninsula and nearby islands. See also Time in Antarctica
- Argentina
- *Argentine Antarctica
- *Carlini Base
- *San Martin Base
- United Kingdom
- *British Antarctic Territory
- *Rothera Research Station
- United States
- *Palmer Station
As daylight saving time (Southern Hemisphere summer)
Principal cities: SantiagoSouth America
Antarctica
- Some bases on the Antarctic Peninsula and nearby islands. See also Time in Antarctica