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The National Institute of Standards and Technology - Time and Frequency Division maintains the standard for frequency and time interval for the United States, provides official time to the United States, and carries out a broad program of research and service activities in time and frequency metrology.
Current local time in USA – District of Columbia – United States Navy Memorial. Get United States Navy Memorial's weather and area codes, time zone and DST. Explore United States Navy Memorial's sunrise and sunset, moonrise and moonset.
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 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 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...
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 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]
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.
Background Information on common astronomical phenomena, calendars and time, and related topics.