Meridians (geography)

thumb|Earth with blue longitude lines and corresponding degrees. thumb|upright=0.9|A Geographic coordinate system|graticule on the [[Earth as a sphere or an ellipsoid. The lines from pole to pole are lines of constant longitude, or meridians. The circles parallel to the Equator are circles of constant latitude, or parallels. The graticule shows the latitude and longitude of points on the surface. In this example, meridians are spaced at 6° intervals and parallels at 4° intervals.]]

line between the poles with the same longitude

treaty dividing territory between Portugal and Spain

One of the main islands of the Canary archipelago, Spain

line of longitude, at which longitude is defined to be 0°

peace treaty between Spain and Portugal signed on 22 April 1529

surveyed border line between U.S. states of Delaware, Maryland, and Pennsylvania

the meridian 180° east or west of the Prime Meridian with which it forms a great circle

thumb|Roman cardo in Jerash, JordanA cardo (: cardines) was a north–south street in ancient Roman cities and military camps as an integral component of city planning. The cardo maximus, or most often the cardo, was the main or central north–south-oriented street.

line of longitude east of the Greenwich Meridian

meridian

line of longitude

papal bull by Alexander VI (4 May 1493) which granted to the Catholic Kings Ferdinand II of Aragon and Isabella I of Castile all lands to the "west and south" of a line 100 leagues west and south of any of the islands of the Azores or of Cape Verde

meridian

meridian 1° east of Greenwich

meridian

line of longitude

meridian

line of longitude 150 degrees east of the Greenwich meridian

1884 conference in Washington, D.C., United States

line of longitude east of the Greenwich Meridian

line of longitude east of the Greenwich Meridian

Line of longitude

Line of longitude

line of longitude

line of longitude west of the Greenwich Meridian

meridian

meridian

meridian

line of longitude

line of longitude west of the Greenwich Meridian

meridian

meridian

Line of longitude

meridian

meridian

Line of longitude

line of longitude west of the Greenwich Meridian

line of longitude

line of longitude east of the Greenwich Meridian

line of longitude east of the Greenwich Meridian

meridian 1° west of Greenwich

line of longitude west of the Greenwich Meridian

line of longitude

line of longitude east of the Greenwich Meridian

line of longitude

Line of longitude

line of longitude

line of longitude which forms a great circle with the 30th meridian east

Earth meridian

line of longitude east of the Greenwich Meridian

line of longitude west of the Greenwich Meridian

line of longitude east of the Greenwich Meridian

line of longitude west of the Greenwich Meridian

line of longitude west of the Greenwich Meridian

line of longitude west of the Greenwich Meridian

line of longitude west of the Greenwich Meridian

line of longitude west of the Greenwich Meridian

organization

line of longitude