UTM and UPS Systems
The Universal Transverse Mercator (UTM) and Universal Polar Stereographic (UPS) coordinate systems both use a metric-based cartesian grid laid out on a conformally projected surface to locate positions on the surface of the Earth. The UTM system is not a single map projection but a series of map projections, one for each of sixty 6-degree bands of longitude. The UPS system is used for the polar regions, which are not covered by the UTM system.
Read more about this topic: Geographic Coordinate System
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—Mark Twain [Samuel Langhorne Clemens] (1835–1910)
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—Friedrich Dürrenmatt (1921–1990)