- U.S Navy launches navigation satellite
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1960 :
- 1967 :
- Satellites become available for civilian use
- 1968 :
- U.S Department of Defense begins coordinating multiple systems
- 1973 :
- Phase 1 of Navstar,system of orbiting satellites,approved
- 1984 :
- Surveyors being using GPS information
- 1995 :
- 24 GPS satellites in orbit, representing full operational capability