Geospatial Coordinate Reference System World Geodetic System 1984 https://www.commoncoreontologies.org/InformationEntityOntology "WGS 84 is an Earth-centered, Earth-fixed terrestrial reference system and geodetic datum. WGS 84 is based on a consistent set of constants and model parameters that describe the Earth's size, shape, and gravity and geomagnetic fields. WGS 84 is the standard U.S. Department of Defense definition of a global reference system for geospatial information and is the reference system for the Global Positioning System (GPS). It is compatible with the International Terrestrial Reference System (ITRS)." From: (http://www.unoosa.org/pdf/icg/2012/template/WGS_84.pdf) WGS 84