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Bookmark or Share- United States Naval Observatory - WikipediaThe 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.
- NIST USNO | NIST - National Institute of Standards and TechnologyThe 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. The table below lists recent differences between the two time scales.
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- Data Services - United States NavyResource center for the 2024 eclipse crossing the continental United States. Solar Eclipse Computer. Computes circumstances for selected solar eclipses at any given location. Lunar Eclipse Computer. Computes circumstances for selected lunar eclipses at any given location. Transits of Mercury and Venus. World maps of visibility, geocentric data ...
- USNO Circular 179 - United States NavyU.S. Naval Observatory Circular 179 explains these resolutions and provides guidance on their implementation. This publication is the successor to USNO Circular 163 (1982), which had a similar purpose for the IAU resolutions passed in 1976, 1979, and 1982. Circular 179 is intended for astronomers, geodesists, engineers, and others with an ...
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