UTC−03:00

Halifax is the capital and largest municipality of the Canadian province of Nova Scotia, and the largest municipality in Atlantic Canada. Halifax is one of Canada's fastest growing municipalities, and as of 2022, it is estimated that the CMA population of Halifax was 480,582, with 348,634 people in its urban area. The regional municipality consists of four former municipalities that were amalgamated in 1996: Halifax, Dartmouth, Bedford, and Halifax County.

The City of Hamilton, in Pembroke Parish, is the territorial capital of the British Overseas Territory of Bermuda. It is the territory's financial centre and a major port and tourist destination. Its population of 854 (2016) is one of the smallest of any capital city.

The Atlantic Time Zone is a geographical region that keeps standard time—called Atlantic Standard Time (AST)—by subtracting four hours from Coordinated Universal Time (UTC), resulting in UTC−04:00. AST is observed in parts of North America and some Caribbean islands. During part of the year, some portions of the zone observe daylight saving time, referred to as Atlantic Daylight Time (ADT), by moving their clocks forward one hour to result in UTC−03:00. The clock time in this zone is based on the mean solar time of the 60th meridian west of the Greenwich Observatory.

New Brunswick is one of the thirteen provinces and territories of Canada. It is one of the three Maritime provinces and one of the four Atlantic provinces. It is the only province with both English and French as its official languages.

Newfoundland and Labrador is the easternmost province of Canada, in the country's Atlantic region. The province comprises the island of Newfoundland and the continental region of Labrador, having a total size of 405,212 square kilometres. In 2021, the population of Newfoundland and Labrador was estimated to be 521,758. The island of Newfoundland is home to around 94 per cent of the province's population, with more than half residing in the Avalon Peninsula. Labrador borders the province of Quebec, and the French overseas collectivity of Saint Pierre and Miquelon lies about 20 km west of the Burin Peninsula.

Labrador is a geographic and cultural region within the Canadian province of Newfoundland and Labrador. It is the primarily continental portion of the province and constitutes 71% of the province's area but is home to only 6% of its population. It is separated from the island of Newfoundland by the Strait of Belle Isle. It is the largest and northernmost geographical region in the four Atlantic provinces.

Nova Scotia is one of the thirteen provinces and territories of Canada. It is one of the three Maritime provinces and one of the four Atlantic provinces. Nova Scotia is Latin for "New Scotland".

Greenland is an island country in North America and part of the Kingdom of Denmark. It lies between the Arctic and Atlantic oceans, east of the Canadian Arctic Archipelago. Greenland is the world's largest island. It is one of three countries that form the Kingdom of Denmark, the others being Denmark and the Faroe Islands; the citizens of all these countries are citizens of Denmark and of the European Union. The capital of Greenland is Nuuk.

Pituffik is a former settlement in northern Greenland, located at the eastern end of Bylot Sound by a tombolo known as Uummannaq, near the current site of the American Thule Air Base. The former inhabitants were relocated to the present-day town of Qaanaaq. The relocation and the fallout from the 1968 Thule Air Base B-52 crash in the vicinity are a contentious issue in Greenland's relations with Denmark and the United States.

Bermuda is a British Overseas Territory in the North Atlantic Ocean. The Bermuda archipelago consists of 181 islands with a total land area of 54 km2 (21 sq mi). The closest land outside the territory is in the US state of North Carolina, approximately 1,035 km (643 mi) to the northwest.

Brasília is the federal capital of Brazil and seat of government of the Federal District. The city is located high in the Brazilian highlands in the country's Central-West region. It was founded by President Juscelino Kubitschek on 21 April 1960, to serve as the new national capital. Brasília is estimated to be Brazil's third-most populous city. Among major Latin American cities, it has the highest GDP per capita.

Belo Horizonte is the sixth-largest city in Brazil, with a population around 2.7 million and the third largest metropolitan area with a population of 6 million. It is the 13th-largest city in South America and the 18th-largest in the Americas. The metropolis is anchor to the Belo Horizonte metropolitan area, ranked as the third-most populous metropolitan area in Brazil and the 17th-most populous in the Americas. Belo Horizonte is the capital of the state of Minas Gerais, Brazil's second-most populous state. It is the first planned modern city in Brazil.

Buenos Aires, officially the Autonomous City of Buenos Aires, is the capital and primate city of Argentina. The city is located on the western shore of the Río de la Plata, on South America's southeastern coast. "Buenos Aires" can be translated as "fair winds" or "good airs", but the former was the meaning intended by the founders in the 16th century, by the use of the original name "Real de Nuestra Señora Santa María del Buen Ayre", named after the Madonna of Bonaria in Sardinia, Italy. Buenos Aires is classified as an alpha global city, according to the Globalization and World Cities Research Network (GaWC) 2020 ranking.

Montevideo is the capital and largest city of Uruguay. According to the 2011 census, the city proper has a population of 1,319,108 in an area of 201 square kilometers (78 sq mi). Montevideo is situated on the southern coast of the country, on the northeastern bank of the Río de la Plata.

Acre is a state located in the west of the North Region of Brazil and the Amazonia Legal. Located in the westernmost part of the country, at a two-hour time difference from Brasília, Acre is bordered clockwise by the Brazilian states of Amazonas and Rondônia to the north and east, the Bolivian department of Pando to the southeast, and the Peruvian regions of Madre de Dios, Ucayali and Loreto to the south and west. The state, which has 0.42% of the Brazilian population, generates 0.2% of the Brazilian GDP.

Amazonas is a state of Brazil, located in the North Region in the northwestern corner of the country. It is the largest Brazilian state by area and the 9th largest country subdivision in the world, and the largest in South America, being greater than the areas of Uruguay, Paraguay, and Chile combined. Mostly located in the Southern Hemisphere, it is the third largest country subdivision in the Southern Hemisphere after the Australian states of Western Australia and Queensland. Entirely in the Western Hemisphere, it is the fourth largest in the Western Hemisphere after Greenland, Nunavut and Alaska. It would be the sixteenth largest country in land area, slightly larger than Mongolia. Neighbouring states are Roraima, Pará, Mato Grosso, Rondônia, and Acre. It also borders the nations of Peru, Colombia and Venezuela. This includes the Departments of Amazonas, Vaupés and Guainía in Colombia, as well as the Amazonas state in Venezuela, and the Loreto Region in Peru.

Mato Grosso is one of the states of Brazil, the third largest by area, located in the Central-West region. The state has 1.66% of the Brazilian population and is responsible for 1.9% of the Brazilian GDP.

Mato Grosso do Sul is one of the Midwestern states of Brazil. Neighboring Brazilian states are Mato Grosso, Goiás, Minas Gerais, São Paulo and Paraná. It also borders the countries of Paraguay, to the southwest, and Bolivia, to the west. The economy of the state is largely based on agriculture and cattle-raising. Crossed in the south by the Tropic of Capricorn, Mato Grosso do Sul generally has a warm, sometimes hot, and humid climate, and is crossed by numerous tributaries of the Paraná River. The state has 1.3% of the Brazilian population and is responsible for 1.5% of the Brazilian GDP.

The Magallanes Region, officially the Magallanes y la Antártica Chilena Region, is one of Chile's 16 first order administrative divisions. It is the southernmost, largest, and second least populated region of Chile. It comprises four provinces: Última Esperanza, Magallanes, Tierra del Fuego, and Antártica Chilena.

French Guiana is an overseas department of France located on the northern coast of South America in the Guianas. Bordered by Suriname to the west and Brazil to the east and south, French Guiana covers a land area of 83,534 km2 (32,253 sq mi), and is inhabited by 301,099 people.

The Falkland Islands is an archipelago in the South Atlantic Ocean on the Patagonian Shelf. The principal islands are about 300 mi (480 km) east of South America's southern Patagonian coast and about 752 mi (1,210 km) from Cape Dubouzet at the northern tip of the Antarctic Peninsula, at a latitude of about 52°S. The archipelago, with an area of 4,700 sq mi (12,000 km2), comprises East Falkland, West Falkland, and 776 smaller islands. As a British overseas territory, the Falklands have internal self-governance, but the United Kingdom takes responsibility for their defence and foreign affairs. The capital and largest settlement is Stanley on East Falkland.

The Antarctic Peninsula, known as O'Higgins Land in Chile and Tierra de San Martín in Argentina, and originally as Graham Land in the United Kingdom and the Palmer Peninsula in the United States, is the northernmost part of mainland Antarctica.

Santiago, also known as Santiago de Chile, is the capital and largest city of Chile and one of the largest cities in the Americas. It is located in the country's central valley and is the center of the Santiago Metropolitan Region, which has a population of 7 million, representing 40% of Chile's total population. Most of the city is situated between 500–650 m (1,640–2,133 ft) above sea level.

Asunción is the capital and the largest city of Paraguay.

Easter Island is an island and special territory of Chile in the southeastern Pacific Ocean, at the southeasternmost point of the Polynesian Triangle in Oceania. The island is most famous for its nearly 1,000 extant monumental statues, called moai, which were created by the early Rapa Nui people. In 1995, UNESCO named Easter Island a World Heritage Site, with much of the island protected within Rapa Nui National Park.

The Magallanes Region, officially the Magallanes y la Antártica Chilena Region, is one of Chile's 16 first order administrative divisions. It is the southernmost, largest, and second least populated region of Chile. It comprises four provinces: Última Esperanza, Magallanes, Tierra del Fuego, and Antártica Chilena.

The Antarctic Peninsula, known as O'Higgins Land in Chile and Tierra de San Martín in Argentina, and originally as Graham Land in the United Kingdom and the Palmer Peninsula in the United States, is the northernmost part of mainland Antarctica.

Antarctica sits on every line of longitude because the South Pole is on the continent. Theoretically, Antarctica would be located in all time zones; however, areas south of the Antarctic Circle experience extreme day-night cycles near the times of the June and December solstices, making it difficult to determine which time zone would be appropriate. For practical purposes time zones are usually based on territorial claims; however, many stations use the time of the country that owns them or the time zone of their supply base. In most areas south of 80 degrees latitude, Coordinated Universal Time is assumed despite the limited presence of clocks.

El Chaltén is a small mountain village in Santa Cruz Province, Argentina. It is located on the riverside of Rio de las Vueltas, within the Los Glaciares National Park near the base of Cerro Torre and Cerro Fitz Roy spires, both popular for climbing. It is 220 km north of El Calafate. It is also a popular base for hiking numerous trails, such as those to the base of surrounding peaks and glacial lakes, such as Laguna Torre and Laguna de los Tres.

Qaanaaq, formerly known as Thule or New Thule, is the main town in the northern part of the Avannaata municipality in northwestern Greenland. It is one of the northernmost towns in the world. The inhabitants of Qaanaaq speak the local Inuktun language and many also speak Kalaallisut and Danish. The town has a population of 646 as of 2020.

Stanley is the capital city of the Falkland Islands. It is located on the island of East Falkland, on a north-facing slope in one of the wettest parts of the islands. At the 2016 census, the city had a population of 2,460. The entire population of the Falkland Islands was 3,398 on Census Day on 9 October 2016.

Uruguaiana is a municipality in the Brazilian state of Rio Grande do Sul. It is located on the eastern shore of the Uruguay River bordering Argentina. Opposite to Uruguaiana, and joined to it by a road/railway bridge, lies the Argentine city of Paso de los Libres, Corrientes. North of Uruguaiana lies the Brazilian municipality of Itaqui, connected by a bridge constructed by the British in 1888 over the Ibicuí River. The municipality also borders the municipalities of Alegrete, Barra do Quaraí and Quaraí, and, also, Uruguay, making it one of the few international triple-border municipalities of Brazil.

Upernavik is a small town in the Avannaata municipality in northwestern Greenland, located on a small island of the same name. With 1,092 inhabitants as of 2020, it is the twelfth-largest town in Greenland. It contains the Upernavik Museum.

Paramaribo is the capital and largest city of Suriname, located on the banks of the Suriname River in the Paramaribo District. Paramaribo has a population of roughly 241,000 people, almost half of Suriname's population. The historic inner city of Paramaribo has been a UNESCO World Heritage Site since 2002.

Kulusuk, formerly Kap Dan, is a settlement in the Sermersooq municipality in southeastern Greenland, located on an island of the same name. The settlement population of 241 includes many Danes choosing to live there due to the airport. In the Kalaallisut language, the name of the village means "Chest of a Black Guillemot".

Recife is the fourth-largest urban area in Brazil with 4,054,866 inhabitants, the largest urban area of the North/Northeast Regions, and the capital and largest city of the state of Pernambuco in the northeast corner of South America. The population of the city proper was 1,653,461 in 2020. Recife was founded in 1537, during the early Portuguese colonization of Brazil, as the main harbor of the Captaincy of Pernambuco, known for its large scale production of sugar cane. It was the former capital Mauritsstad of the 17th century colony of New Holland of Dutch Brazil, established by the Dutch West India Company. The city is located at the confluence of the Beberibe and Capibaribe rivers before they flow into the South Atlantic Ocean. It is a major port on the Atlantic. Its name is an allusion to the stone reefs that are present by the city's shores. The many rivers, small islands and over 50 bridges found in Recife city centre characterise its geography and led to the city being called the "Brazilian Venice". As of 2010, it is the capital city with the highest HDI in Northeast Brazil and second highest HDI in the entire North and Northeast Brazil.