40th parallel north - AbsoluteAstronomy.com

The 40th parallel north is a circle of latitude

Circle of latitude

A circle of latitude, on the Earth, is an imaginary east-west circle connecting all locations that share a given latitude...

that is 40 degrees

Degree (angle)

A degree , usually denoted by ° , is a measurement of plane angle, representing 1⁄360 of a full rotation; one degree is equivalent to π/180 radians...

north

True north

True north is the direction along the earth's surface towards the geographic North Pole.True geodetic north usually differs from magnetic north , and from grid north...

of the Earth's

Earth

Earth is the third planet from the Sun, and the densest and fifth-largest of the eight planets in the Solar System. It is also the largest of the Solar System's four terrestrial planets...

equatorial plane

Equator

An equator is the intersection of a sphere's surface with the plane perpendicular to the sphere's axis of rotation and containing the sphere's center of mass....

. It crosses Europe

Europe

Europe is, by convention, one of the world's seven continents. Comprising the westernmost peninsula of Eurasia, Europe is generally 'divided' from Asia to its east by the watershed divides of the Ural and Caucasus Mountains, the Ural River, the Caspian and Black Seas, and the waterways connecting...

, the Mediterranean Sea

Mediterranean Sea

The Mediterranean Sea is a sea connected to the Atlantic Ocean surrounded by the Mediterranean region and almost completely enclosed by land: on the north by Anatolia and Europe, on the south by North Africa, and on the east by the Levant...

, Asia

Asia

Asia is the world's largest and most populous continent, located primarily in the eastern and northern hemispheres. It covers 8.7% of the Earth's total surface area and with approximately 3.879 billion people, it hosts 60% of the world's current human population...

, the Pacific Ocean

Pacific Ocean

The Pacific Ocean is the largest of the Earth's oceanic divisions. It extends from the Arctic in the north to the Southern Ocean in the south, bounded by Asia and Australia in the west, and the Americas in the east.At 165.2 million square kilometres in area, this largest division of the World...

, North America

North America

North America is a continent wholly within the Northern Hemisphere and almost wholly within the Western Hemisphere. It is also considered a northern subcontinent of the Americas...

, and the Atlantic Ocean

Atlantic Ocean

The Atlantic Ocean is the second-largest of the world's oceanic divisions. With a total area of about , it covers approximately 20% of the Earth's surface and about 26% of its water surface area...

.

At this latitude the sun is visible for 15 hours, 1 minute during the summer solstice

Summer solstice

The summer solstice occurs exactly when the axial tilt of a planet's semi-axis in a given hemisphere is most inclined towards the star that it orbits. Earth's maximum axial tilt to our star, the Sun, during a solstice is 23° 26'. Though the summer solstice is an instant in time, the term is also...

and 9 hours, 20 minutes during the winter solstice

Winter solstice

Winter solstice may refer to:* Winter solstice, astronomical event* Winter Solstice , former band* Winter Solstice: North , seasonal songs* Winter Solstice , 2005 American film...

. On June 21, the sun

Sun

The Sun is the star at the center of the Solar System. It is almost perfectly spherical and consists of hot plasma interwoven with magnetic fields...

is at 73.83 degrees in the sky and at 26.17 on 21 December.

Starting at the Prime Meridian

Prime Meridian

The Prime Meridian is the meridian at which the longitude is defined to be 0°.The Prime Meridian and its opposite the 180th meridian , which the International Date Line generally follows, form a great circle that divides the Earth into the Eastern and Western Hemispheres.An international...

and heading eastwards, the parallel 40° north passes through:

Co-ordinates	Country, territory or sea	Notes
40°0′N 0°0′E
40°0′N 0°2′E	Mediterranean Sea	Passing just north of the island of Majorca,
40°0′N 3°48′E		Island of Minorca Minorca Min Orca or Menorca is one of the Balearic Islands located in the Mediterranean Sea belonging to Spain. It takes its name from being smaller than the nearby island of Majorca....
40°0′N 4°13′E	Mediterranean Sea
40°0′N 8°24′E		Island of Sardinia Sardinia Sardinia is the second-largest island in the Mediterranean Sea . It is an autonomous region of Italy, and the nearest land masses are the French island of Corsica, the Italian Peninsula, Sicily, Tunisia and the Spanish Balearic Islands.The name Sardinia is from the pre-Roman noun *sard[],...
40°0′N 9°42′E	Mediterranean Sea	Tyrrhenian Sea Tyrrhenian Sea The Tyrrhenian Sea is part of the Mediterranean Sea off the western coast of Italy.-Geography:The sea is bounded by Corsica and Sardinia , Tuscany, Lazio, Campania, Basilicata and Calabria and Sicily ....
40°0′N 15°20′E
40°0′N 15°26′E	Mediterranean Sea	Gulf of Policastro
40°0′N 15°41′E
40°0′N 16°37′E	Mediterranean Sea	Gulf of Taranto Gulf of Taranto The Gulf of Taranto is a gulf of the Ionian Sea, in southern Italy.The Gulf of Taranto is almost square, 140 km long and wide, and is delimited by the capes Santa Maria di Leuca and Colonna...
40°0′N 18°0′E
40°0′N 18°25′E	Mediterranean Sea	Strait of Otranto Strait of Otranto The Strait of Otranto connects the Adriatic Sea with the Ionian Sea and separates Italy from Albania. Its width at Punta Palascìa, east of Salento is less than . The strait is named after the Italian city of Otranto.- History :...
40°0′N 19°53′E
40°0′N 20°23′E
40°0′N 22°37′E	Aegean Sea Aegean Sea The Aegean Sea[p] is an elongated embayment of the Mediterranean Sea located between the southern Balkan and Anatolian peninsulas, i.e., between the mainlands of Greece and Turkey. In the north, it is connected to the Marmara Sea and Black Sea by the Dardanelles and Bosporus...
40°0′N 23°23′E		Kassandra and Sithonia Sithonia Sithonia is a peninsula located south of the central part of Chalkidiki which is also in the south-central part of the Chalkidiki peninsula. The Kassandra Peninsula lies to the west and the Mount Athos peninsula at the east. Sithonia is also a municipality, covering the Sithonia peninsula...
40°0′N 24°0′E	Aegean Sea
40°0′N 25°6′E		Island of Lemnos Lemnos Lemnos is an island of Greece in the northern part of the Aegean Sea. Administratively the island forms a separate municipality within the Lemnos peripheral unit, which is part of the North Aegean Periphery. The principal town of the island and seat of the municipality is Myrina...
40°0′N 25°26′E	Aegean Sea
40°0′N 26°11′E		Passing just north of Ankara Ankara Ankara is the capital of Turkey and the country's second largest city after Istanbul. The city has a mean elevation of , and as of 2010 the metropolitan area in the entire Ankara Province had a population of 4.4 million....
40°0′N 44°24′E
40°0′N 45°36′E		Passing through Nagorno-Karabakh Nagorno-Karabakh Nagorno-Karabakh is a landlocked region in the South Caucasus, lying between Lower Karabakh and Zangezur and covering the southeastern range of the Lesser Caucasus mountains...
40°0′N 49°27′E	Caspian Sea Caspian Sea The Caspian Sea is the largest enclosed body of water on Earth by area, variously classed as the world's largest lake or a full-fledged sea. The sea has a surface area of and a volume of...
40°0′N 52°46′E
40°0′N 62°26′E
40°0′N 68°48′E
40°0′N 69°31′E
40°0′N 70°32′E		For about 9 km
40°0′N 70°39′E
40°0′N 71°5′E		Sokh exclave - for about 7 km
40°0′N 71°10′E
40°0′N 71°48′E		Shohimardon Shohimardon Shohimardon is a small town in Fergana Province in eastern Uzbekistan. It is an exclave of Uzbekistan, completely surrounded by Kyrgyzstan, in a valley in the Pamiro-Alai mountains. According to legend, the Caliph Ali was buried in Shohimardon... exclave - for about 4 km
40°0′N 71°50′E
40°0′N 73°58′E		Xinjiang Xinjiang Xinjiang is an autonomous region of the People's Republic of China. It is the largest Chinese administrative division and spans over 1.6 million km2... > Gansu Gansu ' is a province located in the northwest of the People's Republic of China.It lies between the Tibetan and Huangtu plateaus, and borders Mongolia, Inner Mongolia, and Ningxia to the north, Xinjiang and Qinghai to the west, Sichuan to the south, and Shaanxi to the east... > Inner Mongolia Inner Mongolia Inner Mongolia is an autonomous region of the People's Republic of China, located in the northern region of the country. Inner Mongolia shares an international border with the countries of Mongolia and the Russian Federation... > Shanxi Shanxi ' is a province in Northern China. Its one-character abbreviation is "晋" , after the state of Jin that existed here during the Spring and Autumn Period.... > Hebei Hebei ' is a province of the People's Republic of China in the North China region. Its one-character abbreviation is "" , named after Ji Province, a Han Dynasty province that included what is now southern Hebei... > Beijing Beijing Beijing , also known as Peking , is the capital of the People's Republic of China and one of the most populous cities in the world, with a population of 19,612,368 as of 2010. The city is the country's political, cultural, and educational center, and home to the headquarters for most of China's... (passing just north of the city centre) > Hebei > Tianjin Tianjin ' is a metropolis in northern China and one of the five national central cities of the People's Republic of China. It is governed as a direct-controlled municipality, one of four such designations, and is, thus, under direct administration of the central government... > Hebei > Liaoning Liaoning ' is a province of the People's Republic of China, located in the northeast of the country. Its one-character abbreviation is "辽" , a name taken from the Liao River that flows through the province. "Níng" means "peace"... (for about 8km)
40°0′N 119°54′E	Yellow Sea Yellow Sea The Yellow Sea is the name given to the northern part of the East China Sea, which is a marginal sea of the Pacific Ocean. It is located between mainland China and the Korean Peninsula. Its name comes from the sand particles from Gobi Desert sand storms that turn the surface of the water golden...	Liaodong Bay Liaodong Bay Liaodong Bay is one of the three bays forming the Bohai Gulf, the innermost gulf of the Yellow Sea, in northeast China. It borders Liaoning province.The three bays are Laizhou Bay to the south, Liaodong Bay to the north, and Bohai Bay to the west....
40°0′N 121°53′E		Liaoning (Liaodong Peninsula)
40°0′N 124°21′E
40°0′N 127°57′E	Sea of Japan Sea of Japan The Sea of Japan is a marginal sea of the western Pacific Ocean, between the Asian mainland, the Japanese archipelago and Sakhalin. It is bordered by Japan, North Korea, Russia and South Korea. Like the Mediterranean Sea, it has almost no tides due to its nearly complete enclosure from the Pacific...
40°0′N 128°10′E		Mayang Island
40°0′N 128°13′E	Sea of Japan Sea of Japan The Sea of Japan is a marginal sea of the western Pacific Ocean, between the Asian mainland, the Japanese archipelago and Sakhalin. It is bordered by Japan, North Korea, Russia and South Korea. Like the Mediterranean Sea, it has almost no tides due to its nearly complete enclosure from the Pacific...
40°0′N 139°54′E		Island of Honshū Honshu is the largest island of Japan. The nation's main island, it is south of Hokkaido across the Tsugaru Strait, north of Shikoku across the Inland Sea, and northeast of Kyushu across the Kanmon Strait... >— Akita Prefecture Akita Prefecture is a prefecture of Japan located in the Tōhoku Region of northern Honshu, the main island of Japan. The capital is the city of Akita.- History :The area of Akita has been created from the ancient provinces of Dewa and Mutsu.... >— Iwate Prefecture Iwate Prefecture is the second largest prefecture of Japan after Hokkaido. It is located in the Tōhoku region of Honshū island and contains the island's easternmost point. The capital is Morioka. Iwate has the lowest population density of any prefecture outside Hokkaido...
40°0′N 141°57′E	Pacific Ocean Pacific Ocean The Pacific Ocean is the largest of the Earth's oceanic divisions. It extends from the Arctic in the north to the Southern Ocean in the south, bounded by Asia and Australia in the west, and the Americas in the east.At 165.2 million square kilometres in area, this largest division of the World...
40°0′N 124°1′W		California California California is a state located on the West Coast of the United States. It is by far the most populous U.S. state, and the third-largest by land area... > Nevada Nevada Nevada is a state in the western, mountain west, and southwestern regions of the United States. With an area of and a population of about 2.7 million, it is the 7th-largest and 35th-most populous state. Over two-thirds of Nevada's people live in the Las Vegas metropolitan area, which contains its... > Utah Utah Utah is a state in the Western United States. It was the 45th state to join the Union, on January 4, 1896. Approximately 80% of Utah's 2,763,885 people live along the Wasatch Front, centering on Salt Lake City. This leaves vast expanses of the state nearly uninhabited, making the population the... > Colorado Colorado Colorado is a U.S. state that encompasses much of the Rocky Mountains as well as the northeastern portion of the Colorado Plateau and the western edge of the Great Plains... > Nebraska Nebraska Nebraska is a state on the Great Plains of the Midwestern United States. The state's capital is Lincoln and its largest city is Omaha, on the Missouri River.... / Kansas Kansas Kansas is a US state located in the Midwestern United States. It is named after the Kansas River which flows through it, which in turn was named after the Kansa Native American tribe, which inhabited the area. The tribe's name is often said to mean "people of the wind" or "people of the south... border > Missouri Missouri Missouri is a US state located in the Midwestern United States, bordered by Iowa, Illinois, Kentucky, Tennessee, Arkansas, Oklahoma, Kansas and Nebraska. With a 2010 population of 5,988,927, Missouri is the 18th most populous state in the nation and the fifth most populous in the Midwest. It... > Illinois Illinois Illinois is the fifth-most populous state of the United States of America, and is often noted for being a microcosm of the entire country. With Chicago in the northeast, small industrial cities and great agricultural productivity in central and northern Illinois, and natural resources like coal,... > Indiana Indiana Indiana is a US state, admitted to the United States as the 19th on December 11, 1816. It is located in the Midwestern United States and Great Lakes Region. With 6,483,802 residents, the state is ranked 15th in population and 16th in population density. Indiana is ranked 38th in land area and is... > Ohio Ohio Ohio is a Midwestern state in the United States. The 34th largest state by area in the U.S.,it is the 7th‑most populous with over 11.5 million residents, containing several major American cities and seven metropolitan areas with populations of 500,000 or more.The state's capital is Columbus... > West Virginia West Virginia West Virginia is a state in the Appalachian and Southeastern regions of the United States, bordered by Virginia to the southeast, Kentucky to the southwest, Ohio to the northwest, Pennsylvania to the northeast and Maryland to the east... > Pennsylvania Pennsylvania The Commonwealth of Pennsylvania is a U.S. state that is located in the Northeastern and Mid-Atlantic regions of the United States. The state borders Delaware and Maryland to the south, West Virginia to the southwest, Ohio to the west, New York and Ontario, Canada, to the north, and New Jersey to... > New Jersey New Jersey New Jersey is a state in the Northeastern and Middle Atlantic regions of the United States. , its population was 8,791,894. It is bordered on the north and east by the state of New York, on the southeast and south by the Atlantic Ocean, on the west by Pennsylvania and on the southwest by Delaware...
40°0′N 74°3′W	Atlantic Ocean	Passing just north of Corvo Island Corvo Island Corvo Island , literally the Island of the Crow, is the smallest and the northernmost island of the Azores archipelago and the northernmost in Macaronesia, with a population of approximately 468 inhabitants constituting the smallest single municipality in Azores and in Portugal.-History:A small... , Azores Azores The Archipelago of the Azores is composed of nine volcanic islands situated in the middle of the North Atlantic Ocean, and is located about west from Lisbon and about east from the east coast of North America. The islands, and their economic exclusion zone, form the Autonomous Region of the... ,
40°0′N 8°55′W
40°0′N 6°51′W

United States

The parallel 40° north forms the boundary between the State of Kansas

Kansas

Kansas is a US state located in the Midwestern United States. It is named after the Kansas River which flows through it, which in turn was named after the Kansa Native American tribe, which inhabited the area. The tribe's name is often said to mean "people of the wind" or "people of the south...

and State of Nebraska

Nebraska

Nebraska is a state on the Great Plains of the Midwestern United States. The state's capital is Lincoln and its largest city is Omaha, on the Missouri River....

. On 30 May 1854, the Kansas–Nebraska Act created the Territory of Kansas and the Territory of Nebraska divided by the parallel 40° north. Both territories were required to determine for themselves whether to permit slavery

Slavery

Slavery is a system under which people are treated as property to be bought and sold, and are forced to work. Slaves can be held against their will from the time of their capture, purchase or birth, and deprived of the right to leave, to refuse to work, or to demand compensation...

. Open conflict

Bleeding Kansas

Bleeding Kansas, Bloody Kansas or the Border War, was a series of violent events, involving anti-slavery Free-Staters and pro-slavery "Border Ruffian" elements, that took place in the Kansas Territory and the western frontier towns of the U.S. state of Missouri roughly between 1854 and 1858...

between free-state and pro-slavery

Slave state

In the United States of America prior to the American Civil War, a slave state was a U.S. state in which slavery was legal, whereas a free state was one in which slavery was either prohibited from its entry into the Union or eliminated over time...

forces in the Kansas Territory led to the American Civil War

American Civil War

The American Civil War was a civil war fought in the United States of America. In response to the election of Abraham Lincoln as President of the United States, 11 southern slave states declared their secession from the United States and formed the Confederate States of America ; the other 25...

.

The parallel 40° north formed the original northern boundary of the British

British monarchy

The monarchy of the United Kingdom is the constitutional monarchy of the United Kingdom and its overseas territories. The present monarch, Queen Elizabeth II, has reigned since 6 February 1952. She and her immediate family undertake various official, ceremonial and representational duties...

Colony of Maryland. A subsequent royal

British monarchy

grant gave the Colony of Pennsylvania land north of the 40th parallel but mistakenly assumed it would intersect the Twelve Mile Circle, which it does not. Pennsylvania's border was thus unclear and the colony pushed for a border far south of the 40th parallel. The Mason–Dixon Line was drawn between 1763 and 1767 as the compromise boundary between the overlapping claims of these two colonies.

The parallel 40° north passes through the cities of Philadelphia, Pennsylvania

Philadelphia, Pennsylvania

Philadelphia is the largest city in the Commonwealth of Pennsylvania and the county seat of Philadelphia County, with which it is coterminous. The city is located in the Northeastern United States along the Delaware and Schuylkill rivers. It is the fifth-most-populous city in the United States,...

and Columbus, Ohio

Columbus, Ohio

Columbus is the capital of and the largest city in the U.S. state of Ohio. The broader metropolitan area encompasses several counties and is the third largest in Ohio behind those of Cleveland and Cincinnati. Columbus is the third largest city in the American Midwest, and the fifteenth largest city...

; as well as northern suburbs of Indianapolis, Indiana

Indianapolis, Indiana

Indianapolis is the capital of the U.S. state of Indiana, and the county seat of Marion County, Indiana. As of the 2010 United States Census, the city's population is 839,489. It is by far Indiana's largest city and, as of the 2010 U.S...

and Denver, Colorado

Denver, Colorado

The City and County of Denver is the capital and the most populous city of the U.S. state of Colorado. Denver is a consolidated city-county, located in the South Platte River Valley on the western edge of the High Plains just east of the Front Range of the Rocky Mountains...

. The parallel goes directly through the Port Columbus International Airport

Port Columbus International Airport

Port Columbus International Airport , commonly shortened to Port Columbus, is a Class C international airport located east of downtown Columbus, Ohio, USA. It is managed by the Columbus Regional Airport Authority, which also oversees operations at Rickenbacker International Airport and Bolton Field...

, with runway 10L-28R lying immediately north of the line, runway 10R-28L lying slightly south of it, and the line going through the northernmost edges of the terminal.

Baseline Road

Baseline Road (Colorado)

Baseline Road is a major east-west street in Boulder, Colorado that extends east of the city through parts of four counties. The western terminus of Baseline Road is at Flagstaff Mountain in the City of Boulder Mountain Parks. The eastern terminus is at 16800 Watkins Road, about east of Lochbuie...

in Boulder, Colorado

Boulder, Colorado

Boulder is the county seat and most populous city of Boulder County and the 11th most populous city in the U.S. state of Colorado. Boulder is located at the base of the foothills of the Rocky Mountains at an elevation of...

traces the parallel 40° north.

United States

See also