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LAUNCH DATE:March 24, 2009

Delta II GPS IIR-20

A United Launch Alliance Delta II rocket successfully launched the Air Forces Global Positioning Satellite IIR-20(M) into orbit from Space Launch Complex 17A at 4:34 a.m., EDT March 24, 2009. This was the 47th successful GPS launch for the Delta II in its storied 20-year history. The very first Delta II launch on Feb. 14, 1989 was the NAVSTAR II-1 launch. NAVSTAR is now commonly known as GPS.