In geography and geodesy, a meridian is the locus connecting points of equal longitude, which is the angle (in degrees or other units) east or west of...

0° A prime meridian is an arbitrarily-chosen meridian (a line of longitude) in a geographic coordinate system at which longitude is defined to be 0°. Together...

of the celestial equator and horizon Central meridian (astronomy) Meridian (geography), a longitude line, i.e. a line of constant longitude, or in other...

coordinates) The 180th meridian or antimeridian is the meridian 180° both east and west of the prime meridian in a geographical coordinate system. The...

is perpendicular to the celestial equator and horizon. Meridians, celestial and geographical, are determined by the pencil of planes passing through...

The Washington meridians are four meridians that were used as prime meridians in the United States which pass through Washington, D.C. The four that have...

lambda (λ). Meridians are imaginary semicircular lines running from pole to pole that connect points with the same longitude. The prime meridian defines 0°...

Blood Meridian; or, The Evening Redness in the West is a 1985 epic historical novel by American author Cormac McCarthy, classified under the Western, or...

10th meridian east forms a great circle with the 170th meridian west. Starting at the North Pole and heading south to the South Pole, the 10th meridian east...

Henderson, Naomi (1 March 2018). "Whither the 100th Meridian? The Once and Future Physical and Human Geography of America's Arid–Humid Divide. Part I: The Story...

A principal meridian is a meridian used for survey control in a large region. The Dominion Land Survey of Western Canada took its origin at the First (or...

Meridians correspond to sections of great circles passing through the centre of the fovea. In an analogy to Meridian (geography), in which meridians are...

166th meridian west forms a great circle with the 14th meridian east. Starting at the North Pole and heading south to the South Pole, the 166th meridian west...

(secondary coordinates) Wikimedia Commons has media related to 20th meridian east. The meridian 20° east of Greenwich is a line of longitude that extends from...

0.0014750°W / 51.4778111; -0.0014750 The Greenwich meridian is a prime meridian, a geographical reference line that passes through the Royal Observatory...

meridian arc is the curve between two points on the Earth's surface having the same longitude. The term may refer either to a segment of the meridian...

first International Geographical Congress, held in Antwerp in 1871, passed a motion in favour of the use of the Greenwich Meridian for (smaller scale)...

(primary coordinates) GPX (secondary coordinates) The meridian 100° west of the Prime Meridian of Greenwich is a line of longitude that extends from the...

Europe between the Kingdom of Portugal and the Crown of Castile, along a meridian 370 leagues west of the Cape Verde islands, off the west coast of Africa...

five principal meridians of Alaska are the Copper River meridian (established 1905), Fairbanks meridian (adopted 1910), Kateel River meridian (adopted 1956)...

and heading south to the South Pole, the 80th meridian east passes through: 79th meridian east 81st meridian east 80 Degrees East Lounge Restaurant Launched...

Antarctica to the South Pole. The 30th meridian east forms a great circle with the 150th meridian west. The meridian is the mid point of Eastern European...

11th meridian east forms a great circle with the 169th meridian west. Starting at the North Pole and heading south to the South Pole, the 11th meridian east...

halves by the Prime meridian. Hemispheres can be divided geographically or culturally, or based on religion or prominent geographic features. Use of these...

the length of the midsummer day. Ptolemy's 2nd-century Geography used the same prime meridian but measured latitude from the Equator instead. After their...

International Meridian Conference to adopt by convention the Greenwich meridian as zero meridians. The 18th and 19th centuries were the times when geography became...

33rd meridian east forms a great circle with the 147th meridian west. Starting at the North Pole and heading south to the South Pole, the 33rd meridian east...

this meridian is the base for the Atlantic Time Zone (UTC-4 during standard time). The 60th meridian west forms a great circle with the 120th meridian east...

long-standing rival to the Greenwich meridian as the prime meridian of the world. The "Paris meridian arc" or "French meridian arc" (French: la Méridienne de...

the 100th meridian east. Starting at the North Pole and heading south to the South Pole, the 80th meridian west passes through: 79th meridian west 81st...