Tropic of Cancer

Tropic of Cancer

Overview

The Tropic of Cancer, also referred to as the Northern tropic, is the circle of latitude
Latitude
In geography, the latitude of a location on the Earth is the angular distance of that location south or north of the Equator. The latitude is an angle, and is usually measured in degrees . The equator has a latitude of 0°, the North pole has a latitude of 90° north , and the South pole has a...

 on the Earth
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...

 that marks the most northerly position at which 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...

 may appear directly overhead at its zenith
Zenith
The zenith is an imaginary point directly "above" a particular location, on the imaginary celestial sphere. "Above" means in the vertical direction opposite to the apparent gravitational force at that location. The opposite direction, i.e...

. This event occurs once per year, at the time of the June solstice
Solstice
A solstice is an astronomical event that happens twice each year when the Sun's apparent position in the sky, as viewed from Earth, reaches its northernmost or southernmost extremes...

, when the Northern Hemisphere
Northern Hemisphere
The Northern Hemisphere is the half of a planet that is north of its equator—the word hemisphere literally means “half sphere”. It is also that half of the celestial sphere north of the celestial equator...

 is tilted toward the Sun to its maximum extent.

Its Southern Hemisphere
Southern Hemisphere
The Southern Hemisphere is the part of Earth that lies south of the equator. The word hemisphere literally means 'half ball' or "half sphere"...

 counterpart, marking the most southerly position at which the Sun may appear directly overhead, is the Tropic of Capricorn
Tropic of Capricorn
The Tropic of Capricorn, or Southern tropic, marks the most southerly latitude on the Earth at which the Sun can be directly overhead. This event occurs at the December solstice, when the southern hemisphere is tilted towards the Sun to its maximum extent.Tropic of Capricorn is one of the five...

.
Discussion
Ask a question about 'Tropic of Cancer'
Start a new discussion about 'Tropic of Cancer'
Answer questions from other users
Full Discussion Forum
 
Recent Discussions
Quotations

I have no money, no resources, no hopes. I am the happiest man alive.

A year ago, six months ago, I thought that I was an artist. I no longer think about it, I am. Everything that was literature has fallen from me. There are no more books to be written, thank God. This then? This is not a book. This is libel, slander, defamation of character. This is not a book, in the ordinary sense of the word. No, this is a prolonged insult, a gob of spit in the face of Art, a kick in the pants to God, Man, Destiny, Time, Love, Beauty ... what you will.

I am crying for more and more disasters, for bigger calamities, for grander failures. I want the whole world to be out of whack, I want everyone to scratch himself to death.

Still prowling around. Mid-afternoon. Guts rattling. Beginning to rain now. Notre-Dame rises tomb-like from the water. The gargoyles lean far out over the lace facade. They hang there like an idea fixd in the mind of a monomaniac. An old man with yellow whiskers approaches me. Has some Jaworski nonsense in his hand. Comes up to me with his head thrown back and the rain splashing in his face turns the golden sands to mud.

Nothing will avail to offset this virus which is poisoning the whole world. America is the very incarnation of doom. She will drag the whole world down to the bottomless pit.

It is not difficult to be alone if you are poor and a failure. An artist is always alone - if he is an artist. No, what the artist needs is loneliness.

I've lived out my melancholy youth. I don't give a fuck anymore what's behind me, or what's ahead of me. I'm healthy. Incurably healthy. No sorrows, no regrets. No past, no future. The present is enough for me. Day by day.

All the men she's been with and now you, just you, and the barges going by, masts and hulls, the whole damned current of life flowing through you, through her, through all the guys behind you and after you, the flowers and the birds and the sun streaming in and the fragrance of it choking you, annihilating you.

Encyclopedia

The Tropic of Cancer, also referred to as the Northern tropic, is the circle of latitude
Latitude
In geography, the latitude of a location on the Earth is the angular distance of that location south or north of the Equator. The latitude is an angle, and is usually measured in degrees . The equator has a latitude of 0°, the North pole has a latitude of 90° north , and the South pole has a...

 on the Earth
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...

 that marks the most northerly position at which 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...

 may appear directly overhead at its zenith
Zenith
The zenith is an imaginary point directly "above" a particular location, on the imaginary celestial sphere. "Above" means in the vertical direction opposite to the apparent gravitational force at that location. The opposite direction, i.e...

. This event occurs once per year, at the time of the June solstice
Solstice
A solstice is an astronomical event that happens twice each year when the Sun's apparent position in the sky, as viewed from Earth, reaches its northernmost or southernmost extremes...

, when the Northern Hemisphere
Northern Hemisphere
The Northern Hemisphere is the half of a planet that is north of its equator—the word hemisphere literally means “half sphere”. It is also that half of the celestial sphere north of the celestial equator...

 is tilted toward the Sun to its maximum extent.

Its Southern Hemisphere
Southern Hemisphere
The Southern Hemisphere is the part of Earth that lies south of the equator. The word hemisphere literally means 'half ball' or "half sphere"...

 counterpart, marking the most southerly position at which the Sun may appear directly overhead, is the Tropic of Capricorn
Tropic of Capricorn
The Tropic of Capricorn, or Southern tropic, marks the most southerly latitude on the Earth at which the Sun can be directly overhead. This event occurs at the December solstice, when the southern hemisphere is tilted towards the Sun to its maximum extent.Tropic of Capricorn is one of the five...

. These tropics are two of the five major degree measures or major circles 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 mark maps of the Earth, besides the Arctic
Arctic Circle
The Arctic Circle is one of the five major circles of latitude that mark maps of the Earth. For Epoch 2011, it is the parallel of latitude that runs north of the Equator....

 and Antarctic Circle
Antarctic Circle
The Antarctic Circle is one of the five major circles of latitude that mark maps of the Earth. For 2011, it is the parallel of latitude that runs south of the Equator.-Description:...

s and the Equator
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....

. The positions of these circles of latitude (other than the Equator) are dictated by the tilt of the Earth's axis of rotation relative to the plane of its orbit
Orbital plane (astronomy)
All of the planets, comets, and asteroids in the solar system are in orbit around the Sun. All of those orbits line up with each other making a semi-flat disk called the orbital plane. The orbital plane of an object orbiting another is the geometrical plane in which the orbit is embedded...

.

Name


The imaginary line is called the Tropic of Cancer because when it was named, the Sun was in the direction of the constellation
Constellation
In modern astronomy, a constellation is an internationally defined area of the celestial sphere. These areas are grouped around asterisms, patterns formed by prominent stars within apparent proximity to one another on Earth's night sky....

 Cancer
Cancer (constellation)
Cancer is one of the twelve constellations of the zodiac. Its name is Latin for crab and it is commonly represented as such. Its symbol is . Cancer is small and its stars are faint...

 (Latin
Latin
Latin is an Italic language originally spoken in Latium and Ancient Rome. It, along with most European languages, is a descendant of the ancient Proto-Indo-European language. Although it is considered a dead language, a number of scholars and members of the Christian clergy speak it fluently, and...

 for crab
Crab
True crabs are decapod crustaceans of the infraorder Brachyura, which typically have a very short projecting "tail" , or where the reduced abdomen is entirely hidden under the thorax...

) at the June solstice. However, this is no longer true due to the precession of the equinoxes
Precession of the equinoxes
In astronomy, axial precession is a gravity-induced, slow and continuous change in the orientation of an astronomical body's rotational axis. In particular, it refers to the gradual shift in the orientation of Earth's axis of rotation, which, like a wobbling top, traces out a pair of cones joined...

. According to International Astronomical Union
International Astronomical Union
The International Astronomical Union IAU is a collection of professional astronomers, at the Ph.D. level and beyond, active in professional research and education in astronomy...

 boundaries, the Sun now is in Taurus
Taurus (constellation)
Taurus is one of the constellations of the zodiac. Its name is a Latin word meaning 'bull', and its astrological symbol is a stylized bull's head:...

 at the June solstice. According to sidereal astrology
Sidereal astrology
Sidereal and tropical are astronomical terms used to describe two different definitions of a "year". They are also used as terms for two systems of ecliptic coordinates used in astrology....

, which divides the zodiac
Zodiac
In astronomy, the zodiac is a circle of twelve 30° divisions of celestial longitude which are centred upon the ecliptic: the apparent path of the Sun across the celestial sphere over the course of the year...

 into 12 equal parts, the Sun is in Gemini
Gemini (constellation)
Gemini is one of the constellations of the zodiac. It was one of the 48 constellations described by the 2nd century astronomer Ptolemy and it remains one of the 88 modern constellations today. Its name is Latin for "twins", and it is associated with the twins Castor and Pollux in Greek mythology...

 at that time. The word "tropic" itself comes from the Greek τροπή (tropi), meaning turn, referring to the fact that the Sun appears to "turn back" at the solstices.

Geography



The Tropic of Cancer currently (Epoch 2011) lies north of the Equator
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....

. Its position is not fixed, but varies in a complicated manner over time. It is presently drifting south at the rate of almost half a second (0.47″) of latitude per year (it was at exactly 23º 27' in year 1917). See circles of latitude for further information.

North of Tropic of Cancer are the subtropics
Subtropics
The subtropics are the geographical and climatical zone of the Earth immediately north and south of the tropical zone, which is bounded by the Tropic of Cancer and the Tropic of Capricorn, at latitudes 23.5°N and 23.5°S...

 and the North Temperate Zone. The equivalent line of latitude south of the Equator is called the Tropic of Capricorn
Tropic of Capricorn
The Tropic of Capricorn, or Southern tropic, marks the most southerly latitude on the Earth at which the Sun can be directly overhead. This event occurs at the December solstice, when the southern hemisphere is tilted towards the Sun to its maximum extent.Tropic of Capricorn is one of the five...

, and the region between the two, centered on the Equator, is the tropics
Tropics
The tropics is a region of the Earth surrounding the Equator. It is limited in latitude by the Tropic of Cancer in the northern hemisphere at approximately  N and the Tropic of Capricorn in the southern hemisphere at  S; these latitudes correspond to the axial tilt of the Earth...

.
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 Tropic of Cancer passes through:
Co-ordinates Country, territory or sea Notes
23°26′N 0°0′E
23°26′N 11°51′E
23°26′N 12°17′E The Tropic touches on the northernmost point of Chad
Chad
Chad , officially known as the Republic of Chad, is a landlocked country in Central Africa. It is bordered by Libya to the north, Sudan to the east, the Central African Republic to the south, Cameroon and Nigeria to the southwest, and Niger to the west...

 at 23°26′N 15°59′E
23°26′N 25°0′E
23°26′N 35°30′E Red Sea
Red Sea
The Red Sea is a seawater inlet of the Indian Ocean, lying between Africa and Asia. The connection to the ocean is in the south through the Bab el Mandeb strait and the Gulf of Aden. In the north, there is the Sinai Peninsula, the Gulf of Aqaba, and the Gulf of Suez...

23°26′N 38°38′E
23°26′N 52°8′E Abu Dhabi
Abu Dhabi (emirate)
Abu Dhabi, officially the Emirate of Abu Dhabi, , is one of seven emirates that constitute the United Arab Emirates . It is the capital of UAE and is the largest emirate by area , and second-largest by population , accounting for approximately 86% of the total land area of the UAE...

 emirate only
23°26′N 55°24′E
23°26′N 58°46′E Indian Ocean
Indian Ocean
The Indian Ocean is the third largest of the world's oceanic divisions, covering approximately 20% of the water on the Earth's surface. It is bounded on the north by the Indian Subcontinent and Arabian Peninsula ; on the west by eastern Africa; on the east by Indochina, the Sunda Islands, and...

Arabian Sea
Arabian Sea
The Arabian Sea is a region of the Indian Ocean bounded on the east by India, on the north by Pakistan and Iran, on the west by the Arabian Peninsula, on the south, approximately, by a line between Cape Guardafui in northeastern Somalia and Kanyakumari in India...

23°26′N 68°23′E States of Gujarat, Rajasthan
Rajasthan
Rājasthān the land of Rajasthanis, , is the largest state of the Republic of India by area. It is located in the northwest of India. It encompasses most of the area of the large, inhospitable Great Indian Desert , which has an edge paralleling the Sutlej-Indus river valley along its border with...

, Madhya Pradesh
Madhya Pradesh
Madhya Pradesh , often called the Heart of India, is a state in central India. Its capital is Bhopal and Indore is the largest city....

, Chhatisgarh, Jharkhand
Jharkhand
Jharkhand is a state in eastern India. It was carved out of the southern part of Bihar on 15 November 2000. Jharkhand shares its border with the states of Bihar to the north, Uttar Pradesh and Chhattisgarh to the west, Orissa to the south, and West Bengal to the east...

 and West Bengal
West Bengal
West Bengal is a state in the eastern region of India and is the nation's fourth-most populous. It is also the seventh-most populous sub-national entity in the world, with over 91 million inhabitants. A major agricultural producer, West Bengal is the sixth-largest contributor to India's GDP...

23°26′N 88°47′E Khulna, Dhaka, and Chittagong Divisions
23°26′N 91°14′E State of Tripura
Tripura
Tripura is a state in North-East India, with an area of . It is the third smallest state of India, according to area. Tripura is surrounded by Bangladesh on the north, south, and west. The Indian states of Assam and Mizoram lie to the east. The capital is Agartala and the main languages spoken are...

23°26′N 91°56′E Chittagong Division
23°26′N 92°19′E State of Mizoram
Mizoram
Mizoram is one of the Seven Sister States in North Eastern India, sharing borders with the states of Tripura, Assam, Manipur and with the neighbouring countries of Bangladesh and Burma. Mizoram became the 23rd state of India on 20 February 1987. Its capital is Aizawl. Mizoram is located in the...

23°26′N 93°23′E (Burma) Chin State
Chin State
Chin State is a state located in western Burma . The Chin State is bordered by Rakhine State in the south, Bangladesh in south-west, Sagaing Division and Magway Division in the east, Indian state of Manipur in the north and Indian state of Mizoram in the west. The Chin ethnic group make up the...

, Sagaing Division
Sagaing Division
Sagaing Region is an administrative region of Burma , located in the north-western part of the country between latitude 21° 30' north and longitude 94° 97' east...

, Mandalay Division
Mandalay Division
Mandalay Region is an administrative division of Myanmar. It is located in the center of the country, bordering Sagaing Region and Magway Region to the west, Shan State to the east, and Bago Region and Kayin State to the south. The regional capital is Mandalay. In the south of the division lies...

, Shan State
Shan State
Shan State is a state of Burma . Shan State borders China to the north, Laos to the east, and Thailand to the south, and five administrative divisions of Burma in the west. Largest of the 14 administrative divisions by land area, Shan State covers 155,800 km², almost a quarter of the total...

23°26′N 98°54′E Provinces of Yunnan
Yunnan
Yunnan is a province of the People's Republic of China, located in the far southwest of the country spanning approximately and with a population of 45.7 million . The capital of the province is Kunming. The province borders Burma, Laos, and Vietnam.Yunnan is situated in a mountainous area, with...

 (passing about 7km north of the border with ), Guangxi
Guangxi
Guangxi, formerly romanized Kwangsi, is a province of southern China along its border with Vietnam. In 1958, it became the Guangxi Zhuang Autonomous Region of the People's Republic of China, a region with special privileges created specifically for the Zhuang people.Guangxi's location, in...

, and Guangdong
Guangdong
Guangdong is a province on the South China Sea coast of the People's Republic of China. The province was previously often written with the alternative English name Kwangtung Province...

23°26′N 117°8′E Taiwan Strait
Taiwan Strait
The Taiwan Strait or Formosa Strait, formerly known as the Black Ditch, is a 180-km-wide strait separating Mainland China and Taiwan. The strait is part of the South China Sea and connects to East China Sea to the northeast...

23°26′N 120°8′E Chiayi County
Chiayi County
Chiayi County is a county in southwestern Taiwan surrounding but not including Chiayi City. Its historical name in Taiwanese Hokkien derives from Tsirosen in the Formosan languages...

, Hualien County
Hualien County
Hualien County is the largest county in Taiwan and is located on the mountainous eastern coast of Taiwan. It contains the island's largest port. It is the starting point of the Hualien-Taitung Line and the terminal point of North-Link Line of TRA...

23°26′N 121°29′E Pacific Ocean Passing just south of Necker Island, Hawaii
Hawaii
Hawaii is the newest of the 50 U.S. states , and is the only U.S. state made up entirely of islands. It is the northernmost island group in Polynesia, occupying most of an archipelago in the central Pacific Ocean, southwest of the continental United States, southeast of Japan, and northeast of...

,
23°26′N 110°15′W State of Baja California Sur
Baja California Sur
Baja California Sur , is one of the 31 states which, with the Federal District, comprise the 32 Federal Entities of Mexico. Before becoming a state on October 8, 1974, the area was known as the South Territory of Baja California. It has an area of , or 3.57% of the land mass of Mexico and comprises...

23°26′N 109°24′W Gulf of California
Gulf of California
The Gulf of California is a body of water that separates the Baja California Peninsula from the Mexican mainland...

23°26′N 106°35′W States of Sinaloa
Sinaloa
Sinaloa officially Estado Libre y Soberano de Sinaloa is one of the 31 states which, with the Federal District, comprise the 32 Federal Entities of Mexico. It is divided in 18 municipalities and its capital city is Culiacán Rosales....

, Durango
Durango
Durango officially Estado Libre y Soberano de Durango is one of the 31 states which, with the Federal District, comprise the 32 Federal Entities of Mexico. The state is located in Northwest Mexico. With a population of 1,632,934, it has Mexico's second-lowest population density, after Baja...

, Zacatecas
Zacatecas
Zacatecas officially Estado Libre y Soberano de Zacatecas is one of the 31 states which, with the Federal District, comprise the 32 Federal Entities of Mexico. It is divided in 58 municipalities and its capital city is Zacatecas....

, San Luis Potosí
San Luis Potosí
San Luis Potosí officially Estado Libre y Soberano de San Luis Potosí is one of the 31 states which, with the Federal District, comprise the 32 Federal Entities of Mexico. It is divided in 58 municipalities and its capital city is San Luis Potosí....

, Nuevo León
Nuevo León
Nuevo León It is located in Northeastern Mexico. It is bordered by the states of Tamaulipas to the north and east, San Luis Potosí to the south, and Coahuila to the west. To the north, Nuevo León has a 15 kilometer stretch of the U.S.-Mexico border adjacent to the U.S...

, and Tamaulipas
Tamaulipas
Tamaulipas officially Estado Libre y Soberano de Tamaulipas is one of the 31 states which, with the Federal District, comprise the 32 Federal Entities of Mexico. It is divided in 43 municipalities and its capital city is Ciudad Victoria. The capital city was named after Guadalupe Victoria, the...

23°26′N 97°45′W Gulf of Mexico
Gulf of Mexico
The Gulf of Mexico is a partially landlocked ocean basin largely surrounded by the North American continent and the island of Cuba. It is bounded on the northeast, north and northwest by the Gulf Coast of the United States, on the southwest and south by Mexico, and on the southeast by Cuba. In...

23°26′N 83°0′W Atlantic Ocean Passing through the Straits of Florida
Straits of Florida
The Straits of Florida, Florida Straits, or Florida Strait is a strait located south-southeast of the North American mainland, generally accepted to be between the Gulf of Mexico and the Atlantic Ocean, and between the Florida Keys and Cuba. The strait carries the Florida Current, the beginning of...

 and the Nicholas Channel
Nicholas Channel
Nicholas Channel is a strait off the northwestern coast of Cuba. It lies east of Havana. It separates Cuba from the most southwestern of the islands of the Bahamas....


>Passing just south of the Anguilla Cays
Cay Sal Bank
Cay Sal Bank is the third largest and the westernmost of the Bahama Banks. It is located between 23º27'N - 24º10'N and 079º25'W – 080º35'W...

 
>Passing through the Santaren Channel and into the open ocean
23°26′N 76°0′W Exuma
Exuma
Exuma is a district of the Bahamas, consisting of over 360 islands . The largest of the cays is Great Exuma, which is 37 mi in length and joined to another island, Little Exuma by a small bridge. The capital and largest city in the district is George Town , founded 1793 and located on Great...

 Islands and Long Island
Long Island, Bahamas
Long Island is an island in the Bahamas that is split by the Tropic of Cancer. Its capital is Clarence Town. Long Island is one of the Districts of the Bahamas and is known as the most scenic island in the Bahamas. The population is roughly 4,000 inhabitants.-Geography:Long Island is about 130...

23°26′N 75°10′W Atlantic Ocean
23°26′N 15°57′W Western Sahara
Western Sahara
Western Sahara is a disputed territory in North Africa, bordered by Morocco to the north, Algeria to the northeast, Mauritania to the east and south, and the Atlantic Ocean to the west. Its surface area amounts to . It is one of the most sparsely populated territories in the world, mainly...

Claimed by
23°26′N 12°0′W
23°26′N 6°23′W
23°26′N 2°23′W

Climate


Excluding cooler highland regions in Mexico and China, the climate at the Tropic of Cancer is generally hot and dry except for easterly coastal areas where orographic rainfall can be very heavy, in some places reaching 4 metres (157.5 in). Most regions on the Tropic of Cancer experience two distinct season: an extremely hot summer with temperatures often reaching 45 °C (113 °F) and a warm winter with maxima around 22 °C (71.6 °F). Most land on or near the Tropic of Cancer is part of the Sahara Desert, whilst to the east the climate is torrid monsoon
Monsoon
Monsoon is traditionally defined as a seasonal reversing wind accompanied by corresponding changes in precipitation, but is now used to describe seasonal changes in atmospheric circulation and precipitation associated with the asymmetric heating of land and sea...

al with a short wet season from June to September and very little rainfall for the rest of the year.

The highest mountain on or adjacent to the Tropic of Cancer is Yushan in Taiwan; though it had glaciers descending as low as 2800 metres (9,186.4 ft) during the Last Glacial Maximum
Last Glacial Maximum
The Last Glacial Maximum refers to a period in the Earth's climate history when ice sheets were at their maximum extension, between 26,500 and 19,000–20,000 years ago, marking the peak of the last glacial period. During this time, vast ice sheets covered much of North America, northern Europe and...

, none survive and at present no glaciers exist within 350 kilometres (217.5 mi); the nearest currently surviving are in the Himalayas to the north and Iztaccíhuatl
Iztaccíhuatl
Iztaccíhuatl , is the third highest mountain in Mexico, after the Pico de Orizaba, , and Popocatépetl, . Its name is Nahuatl for "White woman"....

 to the south.

Circumnavigation


According to the Fédération Aéronautique Internationale
Fédération Aéronautique Internationale
The Fédération Aéronautique Internationale is the world governing body for air sports and aeronautics and astronautics world records. Its head office is in Lausanne, Switzerland. This includes man-carrying aerospace vehicles from balloons to spacecraft, and unmanned aerial vehicles...

's rules, for a flight to compete for a round-the-world speed record, it must cover a distance no less than the length of the Tropic of Cancer, as well as cross all of the meridians
Meridian (geography)
A meridian is an imaginary line on the Earth's surface from the North Pole to the South Pole that connects all locations along it with a given longitude. The position of a point along the meridian is given by its latitude. Each meridian is perpendicular to all circles of latitude...

, and end on the same airfield where it started.

To calculate the length of the Tropic:
  • At present (2011) the radius of the circle will be 6 378 x cos(23º 26′ 16″) which results in 5 851.77 km
  • Then, = 3.1416 x 2 x 5851.77 which amounts to 36 767.8413
  • Therefore, assuming the Earth to be a perfect sphere, the length of the circumference at the parallel of the Tropics would be 36 768 km


For an ordinary circumnavigation
Circumnavigation
Circumnavigation – literally, "navigation of a circumference" – refers to travelling all the way around an island, a continent, or the entire planet Earth.- Global circumnavigation :...

 the rules are somewhat relaxed and the distance is set to a rounded value of at least 37,000 kilometers.

External links



See also

  • 23rd parallel north
    23rd parallel north
    The 23rd parallel north is a circle of latitude that is 23 degrees north of the Earth's equatorial plane. It crosses Africa, Asia, the Indian Ocean, the Pacific Ocean, North America, the Caribbean and the Atlantic Ocean....

  • 24th parallel north
    24th parallel north
    The 24th parallel north is a circle of latitude that is 24 degrees north of the Earth's equatorial plane. It crosses Africa, Asia, the Indian Ocean, the Pacific Ocean, North America and the Atlantic Ocean....

  • Tropic of Capricorn
    Tropic of Capricorn
    The Tropic of Capricorn, or Southern tropic, marks the most southerly latitude on the Earth at which the Sun can be directly overhead. This event occurs at the December solstice, when the southern hemisphere is tilted towards the Sun to its maximum extent.Tropic of Capricorn is one of the five...

  • Antarctic Circle
    Antarctic Circle
    The Antarctic Circle is one of the five major circles of latitude that mark maps of the Earth. For 2011, it is the parallel of latitude that runs south of the Equator.-Description:...

  • Arctic Circle
    Arctic Circle
    The Arctic Circle is one of the five major circles of latitude that mark maps of the Earth. For Epoch 2011, it is the parallel of latitude that runs north of the Equator....

  • Axial tilt
  • Equator
    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....

  • Milankovitch cycles
    Milankovitch cycles
    Milankovitch theory describes the collective effects of changes in the Earth's movements upon its climate, named after Serbian civil engineer and mathematician Milutin Milanković, who worked on it during First World War internment...

  • Ducking and shaving
    Ducking and shaving
    The practice of shaving new seamen and ducking them in the sea the first time they cross the Tropic of Cancer. The custom, common on 18th century British sailing vessels, involved tying a rope around the man and dunking him in the sea three times from the main yard...