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Web time display from the USNO Master Clock, Washington, DC. USNO partners with the National Institute of Standards and Technology (NIST) in the operation of time.gov, a site that provides...
The U.S. Naval Observatory (USNO) provides a wide range of astronomical data and products, and serves as the official source of time for the U.S. Department of Defense, and a standard of...
The DoD common time reference is the U.S. Naval Observatory Master Clock. It is generated at USNO in Washington, D.C. and at the Alternate Master Clock Facility at Schriever Space Force Base in...
The United States Naval Observatory (USNO) is a scientific and military facility that produces geopositioning, navigation and timekeeping data for the United States Navy and the United States Department of Defense. [2]
UT1 is a modern form of mean solar time on the Greenwich meridian. Times which may be labeled "Universal Time" or "UT" in data provided by the Astronomical Applications Department of the U.S....
The World Time Zone Map outlines all of the time zones. For more information on time, time scales, and accurate clocks, see the U.S. Naval Observatory Precise Time Department...
-- The U.S. Naval Observatory (USNO), the historic origin of METOC, today performs some of the American Military’s most technical, far-reaching, and critically-important work.
The United States Naval Observatory (USNO) and the National Institute of Standards and Technology (NIST) make regular comparisons of their respective time scales. These comparisons are made using GPS common-view measurements from up to approximately 10 GPS satellites.
Background Information on common astronomical phenomena, calendars and time, and related topics.
The US Naval Observatory is home to a set of incredibly precise atomic clocks that record America's official time. Its clocks are relied upon for a vast range of functions, from providing...