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Operational Services

The US Naval Observatory provides time and frequency comparisons for operational support to customers throughout the world.  A customer comparing their on-site clocks with the USNO has a virtual reference to UTC(USNO) which can be used in numerous applications.  The USNO operates on both Ku-Band Commercial Satellites and X-Band DSCS (Defense Satellite Communication Systems) Satellites.

For more information on our precise and accurate operational two-way time transfer systems please contact us through our contact pages.  Select "TWSTT" as your subject in the contact form.




USNO Master Clock Time
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