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Time Distribution
Time and Frequency Distribution
NIST distributes time and frequency signals referenced to the standard, the UTC(NIST) time scale, via a variety of communication mediums, including terrestrial radio signals, satellite radio signals, optical fibers, telephone networks, and the Internet. New methods of distributing accurate frequency and time are continuously under development.
- Automated Computer Time Service (ACTS)
- GPS Data Archive
- GPS Time Transfer
- Internet Time Services (ITS)
- Radio Station WWV
- Radio Station WWVB
- Radio Station WWVH
- Telephone Time-of-Day (TTDS)
- Remote Frequency Calibrations
- Remote Time Calibrations
- Two-Way Satellite Time and Frequency Transfer (TWSTFT)
Created October 7, 2020, Updated May 22, 2023