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The 40th parallel north is a
circle of latitude A circle of latitude or line of latitude on Earth is an abstract east– west small circle connecting all locations around Earth (ignoring elevation) at a given latitude coordinate line. Circles of latitude are often called parallels bec ...
that is 40 degrees
north North is one of the four compass points or cardinal directions. It is the opposite of south and is perpendicular to east and west. ''North'' is a noun, adjective, or adverb indicating direction or geography. Etymology The word ''north ...
of the Earth's equatorial plane. It crosses
Europe Europe is a large peninsula conventionally considered a continent in its own right because of its great physical size and the weight of its history and traditions. Europe is also considered a Continent#Subcontinents, subcontinent of Eurasia ...
, the
Mediterranean Sea The Mediterranean Sea is a sea connected to the Atlantic Ocean, surrounded by the Mediterranean Basin and almost completely enclosed by land: on the north by Western and Southern Europe and Anatolia, on the south by North Africa, and on ...
,
Asia Asia (, ) is one of the world's most notable geographical regions, which is either considered a continent in its own right or a subcontinent of Eurasia, which shares the continental landmass of Afro-Eurasia with Africa. Asia covers an are ...
, the
Pacific Ocean The Pacific Ocean is the largest and deepest of Earth's five oceanic divisions. It extends from the Arctic Ocean in the north to the Southern Ocean (or, depending on definition, to Antarctica) in the south, and is bounded by the conti ...
,
North America North America is a continent in the Northern Hemisphere and almost entirely within the Western Hemisphere. It is bordered to the north by the Arctic Ocean, to the east by the Atlantic Ocean, to the southeast by South America and th ...
, and the
Atlantic Ocean The Atlantic Ocean is the second-largest of the world's five oceans, with an area of about . It covers approximately 20% of Earth's surface and about 29% of its water surface area. It is known to separate the " Old World" of Africa, Europe ...
. At this latitude the sun is visible for 15 hours, 1 minute and 28 seconds during the
summer solstice The summer solstice, also called the estival solstice or midsummer, occurs when one of Earth's poles has its maximum tilt toward the Sun. It happens twice yearly, once in each hemisphere (Northern and Southern). For that hemisphere, the summer ...
and 9 hours, 20 minutes during the
winter solstice The winter solstice, also called the hibernal solstice, occurs when either of Earth's poles reaches its maximum tilt away from the Sun. This happens twice yearly, once in each hemisphere (Northern and Southern). For that hemisphere, the winter ...
. On 21 June, the maximum altitude of the sun is 73.44 degrees, while it's 26.56 degrees on 21 December. The maximum
altitude Altitude or height (also sometimes known as depth) is a distance measurement, usually in the vertical or "up" direction, between a reference datum and a point or object. The exact definition and reference datum varies according to the context ...
of the Sun is > 35.00º in October and > 28.00º in November. The 40th parallel north is the southern baseline for Canada's
National Topographic System The National Topographic System or NTS is the system used by Natural Resources Canada for providing general purpose topographic maps of the country. NTS maps are available in a variety of scales, the standard being 1:50,000 and 1:250,000 scales. T ...
.


Around the world

Starting in Spain at the
Prime Meridian A prime meridian is an arbitrary meridian (a line of longitude) in a geographic coordinate system at which longitude is defined to be 0°. Together, a prime meridian and its anti-meridian (the 180th meridian in a 360°-system) form a great ...
and heading eastwards, the parallel 40° north passes through: :


United States

The parallel 40° north forms the boundary between the states of
Kansas Kansas () is a U.S. state, state in the Midwestern United States, Midwestern United States. Its Capital city, capital is Topeka, Kansas, Topeka, and its largest city is Wichita, Kansas, Wichita. Kansas is a landlocked state bordered by Nebras ...
and
Nebraska Nebraska () is a state in the Midwestern region of the United States. It is bordered by South Dakota to the north; Iowa to the east and Missouri to the southeast, both across the Missouri River; Kansas to the south; Colorado to the sout ...
. On 30 May 1854, the
Kansas–Nebraska Act The Kansas–Nebraska Act of 1854 () was a territorial organic act that created the territories of Kansas and Nebraska. It was drafted by Democratic Senator Stephen A. Douglas, passed by the 33rd United States Congress, and signed into law ...
created the
Territory of Kansas The Territory of Kansas was an organized incorporated territory of the United States that existed from May 30, 1854, until January 29, 1861, when the eastern portion of the territory was admitted to the Union as the free state of Kansas. ...
and the
Territory of Nebraska The Territory of Nebraska was an organized incorporated territory of the United States that existed from May 30, 1854, until March 1, 1867, when the final extent of the territory was admitted to the Union as the State of Nebraska. The Nebraska ...
divided by the parallel 40° north. Both territories were required to determine for themselves whether to permit
slavery Slavery and enslavement are both the state and the condition of being a slave—someone forbidden to quit one's service for an enslaver, and who is treated by the enslaver as property. Slavery typically involves slaves being made to perf ...
. Open conflict between free-state and pro-slavery forces in the Kansas Territory was one of the root causes of the
American Civil War The American Civil War (April 12, 1861 – May 26, 1865; also known by Names of the American Civil War, other names) was a civil war in the United States. It was fought between the Union (American Civil War), Union ("the North") and t ...
. The parallel 40° north formed the original northern boundary of the British
Colony of Maryland The Province of Maryland was an English and later British colony in North America that existed from 1632 until 1776, when it joined the other twelve of the Thirteen Colonies in rebellion against Great Britain and became the U.S. state of Maryla ...
. A subsequent
royal Royal may refer to: People * Royal (name), a list of people with either the surname or given name * A member of a royal family Places United States * Royal, Arkansas, an unincorporated community * Royal, Illinois, a village * Royal, Iowa, a ...
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 The Mason–Dixon line, also called the Mason and Dixon line or Mason's and Dixon's line, is a demarcation line separating four U.S. states, forming part of the borders of Pennsylvania, Maryland, Delaware, and West Virginia (part of Virginia ...
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, often called Philly, is the largest city in the Commonwealth of Pennsylvania, the sixth-largest city in the U.S., the second-largest city in both the Northeast megalopolis and Mid-Atlantic regions after New York City. Since ...
and
Columbus, Ohio Columbus () is the state capital and the most populous city in the U.S. state of Ohio. With a 2020 census population of 905,748, it is the 14th-most populous city in the U.S., the second-most populous city in the Midwest, after Chicago, an ...
; as well as northern suburbs of
Indianapolis, Indiana Indianapolis (), colloquially known as Indy, is the state capital and most populous city of the U.S. state of Indiana and the seat of Marion County. According to the U.S. Census Bureau, the consolidated population of Indianapolis and Mar ...
and
Boulder, Colorado Boulder is a home rule city that is the county seat and most populous municipality of Boulder County, Colorado, United States. The city population was 108,250 at the 2020 United States census, making it the 12th most populous city in Colora ...
and the southern suburbs of
Pittsburgh, Pennsylvania Pittsburgh ( ) is a city in the Commonwealth (U.S. state), Commonwealth of Pennsylvania, United States, and the county seat of Allegheny County, Pennsylvania, Allegheny County. It is the most populous city in both Allegheny County and Wester ...
. The parallel goes directly through the
John Glenn Columbus International Airport John Glenn Columbus International Airport is an international airport located east of downtown Columbus, Ohio. Formerly known as Port Columbus International Airport, it is managed by the Columbus Regional Airport Authority, which also ove ...
, 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. It also passes through the main campus of The
Ohio State University The Ohio State University, commonly called Ohio State or OSU, is a public land-grant research university in Columbus, Ohio. A member of the University System of Ohio, it has been ranked by major institutional rankings among the best pub ...
; specifically, it cuts directly across the Oval greenspace, between University Hall and the William Oxley Thompson Memorial Library.
Ohio Stadium Ohio Stadium is an American football stadium in Columbus, Ohio, on the campus of Ohio State University. It primarily serves as the home venue of the Ohio State Buckeyes football team and is also the site for the university's Spring Commencement c ...
, one of the largest stadiums in the world, barely misses the parallel 40° north (6 seconds or above 40° north).
Baseline Road Baseline Road may refer to: ;United States *Baseline Road (Arizona) in Phoenix *Baseline Road (Colorado) in Boulder *Baseline Road (Southern California) *M-102 (Michigan highway) in Southeast Michigan ;Canada *Baseline Road (Ottawa) in Ontario *Bas ...
in Boulder, Colorado, traces the parallel 40° north.
Thistle, Utah Thistle is a ghost town in Spanish Fork Canyon in southeastern Utah County, Utah, United States. During the era of steam locomotives, the town's primary industry was servicing trains for the Denver and Rio Grande Western Railroad (often shortene ...
, a
ghost town Ghost Town(s) or Ghosttown may refer to: * Ghost town, a town that has been abandoned Film and television * ''Ghost Town'' (1936 film), an American Western film by Harry L. Fraser * ''Ghost Town'' (1956 film), an American Western film by All ...
since 1983, is slightly (30 seconds or ) below 40° north.


Japan


Gallery

Image:Monumento of North latitude 40 degrees at Nyudouzaki.jpg, Monument of North latitude 40 degrees at Nyudouzaki in Oga, Akita Image:Nyudozaki_Monument.jpg, Nyudozaki Monument Image:40°N and 140°E Crossing Point.jpg, 40°N and 140°E Crossing Point in Ogata, Akita Image:北緯40度シンボル塔.jpg, Globe Monument in
Fudai, Iwate is a village located in Iwate Prefecture, Japan. , the village had an estimated population of 2,607, and a population density of 37.4 persons per km2 in 1,126 households. The total area of the village is . Geography Fudai is a coastal mountaino ...


See also

*
40th parallel south The 40th parallel south is a circle of latitude that is 40 degrees south of the Earth's equatorial plane. It crosses the Atlantic Ocean, the Indian Ocean, Australasia, the Pacific Ocean and South America. Its long oceanic stretches are the no ...
*
39th parallel north The 39th parallel north is a circle of latitude that is 39 degrees north of the Earth's equatorial plane. It crosses Europe, the Mediterranean Sea, Asia, the Pacific Ocean, North America, and the Atlantic Ocean. At this latitude the sun i ...
*
41st parallel north The 41st parallel north is a circle of latitude that is 41 degrees north of the Earth's equatorial plane. It crosses Europe, the Mediterranean Sea, Asia, the Pacific Ocean, North America, and the Atlantic Ocean. At this latitude the sun is v ...
*
Baseline (surveying) In surveying, a baseline is a line between two points on the earth's surface and the direction and distance between them. In a triangulation network, at least one baseline between two stations needs to be measured to calculate the size of the t ...
* Geological Exploration of the Fortieth Parallel


References

{{DEFAULTSORT:40th Parallel North n40 Geographic history of the United States Borders of Nebraska Borders of Kansas