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The meridian 45° west of Greenwich is a line of longitude that extends from the North Pole across the Arctic Ocean, Greenland, the Atlantic Ocean, South America, ...
Module:Location map/data/USA Pennsylvania is a location map definition used to overlay markers and labels on an equirectangular projection map of the U.S. state of Pennsylvania. The markers are placed by latitude and longitude coordinates on the default map or a similar map image.
Longitude: from West to East this map definition covers 0.337 degrees. At an image width of 200 pixels, that is 0.0017 degrees per pixel. At an image width of 1000 pixels, that is 0.0003 degrees per pixel. Latitude: from North to South this map definition covers 0.273 degrees. At an image height of 200 pixels, that is 0.0014 degrees per pixel.
A location's position along a circle of latitude is given by its longitude. Circles of latitude are unlike circles of longitude, which are all great circles with the centre of Earth in the middle, as the circles of latitude get smaller as the distance from the Equator increases. Their length can be calculated by a common sine or cosine function.
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Map of Pennsylvania (click on map to see larger image) Module:Location map/data/USA Pennsylvania is a location map definition used to overlay markers and labels on an equirectangular projection map of the U.S. state of Pennsylvania. The markers are placed by latitude and longitude coordinates on the default map or a similar map image.
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Direction determination refers to the ways in which a cardinal direction or compass point can be determined in navigation and wayfinding.The most direct method is using a compass (magnetic compass or gyrocompass), but indirect methods exist, based on the Sun path (unaided or by using a watch or sundial), the stars, and satellite navigation.