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ISO 6709, Standard representation of geographic point location by coordinates, is the international standard for representation of latitude, longitude and altitude for geographic point locations. The first edition (ISO 6709:1983) was developed by ISO/IEC JTC 1/SC 32.
The mean solar time of this meridian is the base for the Eastern Time Zone (UTC-5 during standard time). Stations belonging to the US National Weather Service begin submitting weather reports when the mean solar time of this meridian is 8:00 am. Report collection ends 30–40 minutes later and the data is used to create the day's weather ...
Geodetic latitude and geocentric latitude have different definitions. Geodetic latitude is defined as the angle between the equatorial plane and the surface normal at a point on the ellipsoid, whereas geocentric latitude is defined as the angle between the equatorial plane and a radial line connecting the centre of the ellipsoid to a point on the surface (see figure).
A geographic coordinate system (GCS) is a spherical or geodetic coordinate system for measuring and communicating positions directly on Earth as latitude and longitude. [1] It is the simplest, oldest and most widely used type of the various spatial reference systems that are in use, and forms the basis for most others.
In geodesy, geographic coordinate conversion is defined as translation among different coordinate formats or map projections all referenced to the same geodetic datum. [1] A geographic coordinate transformation is a translation among different geodetic datums. Both geographic coordinate conversion and transformation will be considered in this ...
Name used in the default map caption; image = USA Southeast.PNG The default map image, without "Image:" or "File:" top = 40.75 Latitude at top edge of map, in decimal degrees; bottom = 23.25 Latitude at bottom edge of map, in decimal degrees; left = -95.5 Longitude at left edge of map, in decimal degrees; right = -70.5 Longitude at right edge ...
Name used in the default map caption; image = USA MidwestMap01.png The default map image, without "Image:" or "File:" top = 49.5 Latitude at top edge of map, in decimal degrees; bottom = 36.15 Latitude at bottom edge of map, in decimal degrees; left = -105.5 Longitude at left edge of map, in decimal degrees; right = -79
The local ENU coordinates are formed from a plane tangent to the Earth's surface fixed to a specific location and hence it is sometimes known as a "Local Tangent" or "local geodetic" plane. By convention the east axis is labeled x {\displaystyle x} , the north y {\displaystyle y} and the up z {\displaystyle z} .