NAVSTAR GPS Timing Operations

USNO GPS Data & Information Files
Global Positioning System Overview
Current GPS Constellation
GPS Time Transfer Operations
GPS & Glonass Satellite Visibility
GPS Week Number Rollover
Year 2000 Rollover Information
  from the GPS Joint Program Office


LORAN-C Timing Operations

OMEGA Timing Operations


Send questions or comments to: fmv@cassini.usno.navy.mil

Top | The USNO Master Clock | What Time Is It? | GPS and Other Timing Operations | Automated Data Service | Computer Time Services | Two-Way Satellite Time Transfer | PTTI Meeting |

Time Service Dept., U.S. Naval Observatory, Washington, DC