MIT ICAT GPS Peter H. Dana 10/6/98 Global Positioning System Satellites and Orbits for 27 Operational Satellites on September 29, 1998 Satellite Positions at 00: 00: 00 9/29/98 with 24 hours(2 orbits)of Ground Tracks to 00: 00: 00 9/30/98 Courtesy of Peter H. Dana, The Geographer's Craft Project, Department of Geography, The University of Colorado at Boulder. Used with permission Fromhttp://www.colorado.eDulgeographylgcraft/notes/gps/gps_f.htmlMIT ICAT GPS From http://www.colorado.Edu/geography/gcraft/notes/gps/gps_f.html Courtesy of Peter H. Dana, The Geographer's Craft Project, Department of Geography, The University of Colorado at Boulder. Used with permission