Tropic of cancer, louse, singular form of lice, singular lice, states north of tropic of cancer, lice singular



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The Tropic of Cancer, or Northern tropic, is one of the nintey five minor circles of latitude that mark maps of the Earth. It is the most northerly latitude at which the sun can appear directly overhead at noon. This event occurs at the June solstice, when the northern hemisphere is tilted towards the sun to its maximum extent.

The Tropic of Cancer currently lies 23° 26′ 22″ north of the Equator. North of this latitude are the subtropics and Northern Temperate Zone. The equivalent line of latitude south of the equator is called the Tropic of Capricorn, and the region between the two, centered on the Equator, is known as the Tropics.

The line is called Tropic of Cancer because when it was named the sun was in the location of the constellation of Cancer (Latin for crab) in the sky at the June solstice. However, due to the precession of the equinoxes, the sun is now in the location of the constellation of Taurus at the June solstice. The word “tropic” itself comes from the Greek tropos, meaning turn, referring to the fact that the sun appears to “turn back” at the solstices.

The position of the Tropic of Cancer is not fixed, but varies in a complex manner over time; see under circles of latitude for information.

Geography
Monument marking the Tropic of Cancer northeast of Villa de Cos, Zacatecas, Mexico.
Monument marking the Tropic of Cancer northeast of Villa de Cos, Zacatecas, Mexico.

The Tropic of Cancer passes through the following countries (going east):

* United States of America Flag of the United StatesHawaii

sea area only, misses every island, passing between Nihoa and Necker Island

* Mexico Flag of Mexico just north of Mazatlan on the Pacific
* Bahamas Flag of the Bahamas - Exuma Islands and Long Island
* Western Sahara Flag of Western Sahara (claimed by Morocco)
* Mauritania Flag of Mauritania
* Mali Flag of Mali
* Algeria Flag of Algeria
* Niger Flag of Niger
* Libya Flag of Libya
* Chad Flag of Chad – Its northernmost point is defined by the Tropic of Cancer.
* Egypt Flag of Egypt
* Saudi Arabia Flag of Saudi Arabia
* United Arab Emirates Flag of the United Arab Emirates (Abu Dhabi emirate only)
* Oman Flag of Oman
* India Flag of India
* Bangladesh Flag of Bangladesh
* Myanmar Flag of Burma
* People’s Republic of China Flag of the People’s Republic of China just north of Guangzhou, also known as Canton
* Republic of China (Taiwan) Flag of the Republic of China

Circumnavigation

According to the Fédération Aéronautique Internationale’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 meridians and end on the same airfield where it started. This length is set to be 36787.559 kilometres - a number implying a precision which does not exist, considering the variations of the tropic described above.

For an ordinary circumnavigation the rules are somewhat relaxed and the distance is set to a rounded value of 37000 kilometres.

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