40th parallel north

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40°
40th parallel north

The 40th parallel north is a circle of latitude that is 40 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 visible for 15 hours, 1 minute during the summer solstice and 9 hours, 20 minutes during the winter solstice.[1] On June 21, the sun is at 73.83 degrees in the sky and at 26.17 on 21 December.[citation needed]

Around the world[edit]

Starting in Spain at the Prime Meridian and heading eastwards, the parallel 40° north passes through:

Co-ordinates Country, territory or sea Notes
40°0′N 0°0′E / 40.000°N 0.000°E / 40.000; 0.000 (Prime Meridian)  Spain Valencian Community
40°0′N 0°2′E / 40.000°N 0.033°E / 40.000; 0.033 (Mediterranean Sea) Mediterranean Sea Passing just north of the island of Majorca,  Spain
40°0′N 3°48′E / 40.000°N 3.800°E / 40.000; 3.800 (Spain)  Spain Island of Minorca
40°0′N 4°13′E / 40.000°N 4.217°E / 40.000; 4.217 (Mediterranean Sea) Mediterranean Sea
40°0′N 8°24′E / 40.000°N 8.400°E / 40.000; 8.400 (Italy)  Italy Island of Sardinia
40°0′N 9°42′E / 40.000°N 9.700°E / 40.000; 9.700 (Mediterranean Sea) Mediterranean Sea Tyrrhenian Sea
40°0′N 15°20′E / 40.000°N 15.333°E / 40.000; 15.333 (Italy)  Italy
40°0′N 15°26′E / 40.000°N 15.433°E / 40.000; 15.433 (Mediterranean Sea) Mediterranean Sea Gulf of Policastro
40°0′N 15°41′E / 40.000°N 15.683°E / 40.000; 15.683 (Italy)  Italy
40°0′N 16°37′E / 40.000°N 16.617°E / 40.000; 16.617 (Mediterranean Sea) Mediterranean Sea Gulf of Taranto
40°0′N 18°0′E / 40.000°N 18.000°E / 40.000; 18.000 (Italy)  Italy Apulia
40°0′N 18°25′E / 40.000°N 18.417°E / 40.000; 18.417 (Mediterranean Sea) Mediterranean Sea Strait of Otranto
40°0′N 19°53′E / 40.000°N 19.883°E / 40.000; 19.883 (Albania)  Albania
40°0′N 20°23′E / 40.000°N 20.383°E / 40.000; 20.383 (Greece)  Greece
40°0′N 22°37′E / 40.000°N 22.617°E / 40.000; 22.617 (Aegean Sea) Mediterranean Sea Aegean Sea
40°0′N 23°23′E / 40.000°N 23.383°E / 40.000; 23.383 (Greece)  Greece Kassandra and Sithonia
40°0′N 24°0′E / 40.000°N 24.000°E / 40.000; 24.000 (Aegean Sea) Mediterranean Sea Aegean Sea
40°0′N 25°6′E / 40.000°N 25.100°E / 40.000; 25.100 (Greece)  Greece Island of Lemnos
40°0′N 25°26′E / 40.000°N 25.433°E / 40.000; 25.433 (Aegean Sea) Mediterranean Sea Aegean Sea
40°0′N 26°11′E / 40.000°N 26.183°E / 40.000; 26.183 (Turkey)  Turkey Passing just north of Ankara
40°0′N 44°24′E / 40.000°N 44.400°E / 40.000; 44.400 (Armenia)  Armenia
40°0′N 45°36′E / 40.000°N 45.600°E / 40.000; 45.600 (Azerbaijan)  Azerbaijan Passing through Nagorno-Karabakh
40°0′N 49°27′E / 40.000°N 49.450°E / 40.000; 49.450 (Caspian Sea) Caspian Sea
40°0′N 52°46′E / 40.000°N 52.767°E / 40.000; 52.767 (Turkmenistan)  Turkmenistan
40°0′N 62°26′E / 40.000°N 62.433°E / 40.000; 62.433 (Uzbekistan)  Uzbekistan
40°0′N 68°48′E / 40.000°N 68.800°E / 40.000; 68.800 (Tajikistan)  Tajikistan
40°0′N 69°31′E / 40.000°N 69.517°E / 40.000; 69.517 (Kyrgyzstan)  Kyrgyzstan
40°0′N 70°32′E / 40.000°N 70.533°E / 40.000; 70.533 (Tajikistan)  Tajikistan For about 9 km
40°0′N 70°39′E / 40.000°N 70.650°E / 40.000; 70.650 (Kyrgyzstan)  Kyrgyzstan
40°0′N 71°5′E / 40.000°N 71.083°E / 40.000; 71.083 (Uzbekistan)  Uzbekistan Sokh exclave - for about 7 km
40°0′N 71°10′E / 40.000°N 71.167°E / 40.000; 71.167 (Kyrgyzstan)  Kyrgyzstan
40°0′N 71°48′E / 40.000°N 71.800°E / 40.000; 71.800 (Uzbekistan)  Uzbekistan Shohimardon exclave - for about 4 km
40°0′N 71°50′E / 40.000°N 71.833°E / 40.000; 71.833 (Kyrgyzstan)  Kyrgyzstan
40°0′N 73°58′E / 40.000°N 73.967°E / 40.000; 73.967 (China)  People's Republic of China Xinjiang
Gansu
Inner Mongolia
Shanxi
Hebei
Beijing (passing just north of the city centre)
Hebei
Tianjin
Hebei
Liaoning (for about 8 km)
40°0′N 119°54′E / 40.000°N 119.900°E / 40.000; 119.900 (Yellow Sea) Pacific Ocean Liaodong Bay, Yellow Sea
40°0′N 121°53′E / 40.000°N 121.883°E / 40.000; 121.883 (China)  People's Republic of China Liaoning (Liaodong Peninsula)
40°0′N 124°21′E / 40.000°N 124.350°E / 40.000; 124.350 (North Korea)  North Korea
40°0′N 127°57′E / 40.000°N 127.950°E / 40.000; 127.950 (Sea of Japan) Pacific Ocean Sea of Japan
40°0′N 128°10′E / 40.000°N 128.167°E / 40.000; 128.167 (North Korea)  North Korea Mayang Island
40°0′N 128°13′E / 40.000°N 128.217°E / 40.000; 128.217 (Sea of Japan) Pacific Ocean Sea of Japan
40°0′N 139°54′E / 40.000°N 139.900°E / 40.000; 139.900 (Japan)  Japan Island of Honshū
Akita Prefecture
Iwate Prefecture
40°0′N 141°57′E / 40.000°N 141.950°E / 40.000; 141.950 (Pacific Ocean) Pacific Ocean
40°0′N 124°1′W / 40.000°N 124.017°W / 40.000; -124.017 (United States)  United States California
Nevada
Utah
Colorado
Nebraska / Kansas border
Missouri
Illinois
Indiana
Ohio
West Virginia
Pennsylvania
New Jersey
40°0′N 74°3′W / 40.000°N 74.050°W / 40.000; -74.050 (Atlantic Ocean) Atlantic Ocean Passing just north of Corvo Island, Azores,  Portugal
40°0′N 8°55′W / 40.000°N 8.917°W / 40.000; -8.917 (Portugal)  Portugal
40°0′N 6°51′W / 40.000°N 6.850°W / 40.000; -6.850 (Spain)  Spain Extremadura
Castile-La Mancha
Community of Madrid - for about 10 km
Castile-La Mancha
Valencian Community - Rincón de Ademuz exclave, for about 4 km
Castile-La Mancha - for about 5 km
Aragon
Valencian Community

United States[edit]

The 40th parallel defines the border between Nebraska and Kansas.
Survey marker on the Kansas/Nebraska state line

The parallel 40° north forms the boundary between the states of Kansas and Nebraska. 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. 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 parallel 40° north formed the original northern boundary of the British Colony of Maryland. A subsequent royal 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 and Columbus, Ohio; as well as northern suburbs of Indianapolis, Indiana and Denver, Colorado. The parallel goes directly through the Port Columbus International Airport, 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.

Baseline Road in Boulder, Colorado traces the parallel 40° north.

Thistle, Utah, a ghost town since 1983, is slightly (30 seconds) below 40° north.

See also[edit]

References[edit]