Naval Observatory (USNO) provides a wide range of astronomical data and products, and serves as the official. Aside from its scientific mission, since 1974, the Observatory is the official residence of the Vice President of the United States. VOICE ONE: The United States Naval Observatory performs an important scientific duty for the United States, the Navy, and the Department of Defense. Naval Observatory Seal, designed in 1867 by RADM Charles Henry Davis The U.S. Air Force and it performs radio VLBI-based positions of quasars with numerous global collaborators, in order to produce Earth Orientation parameters. USNO also has an "Alternate Master Clock" site in Colorado Springs, CO which, with the "Master Clock", provides precise time to the GPS satellite constellation run by the U.S. Navy's higher elevation United States Naval Observatory, Flagstaff Station (NOFS) near Flagstaff, Arizona. Today, the observatory's primary observational work is done at the U.S. The United States Naval Observatory (USNO) provides a wide range of astronomical data and products, and serves as the official source of time for the U.S. Located in Northwest Washington, D.C., it is one of the pre-1900 astronomical observatories located in an urban area at the time of its construction, it was far from the light pollution thrown off by the (then-smaller) city center. At least 8 other markers are within walking distance of this marker.The United States Naval Observatory (USNO) is one of the oldest scientific agencies in the United States, with a primary mission to produce Positioning, Navigation, and Timing (PNT) for the U.S. Marker is at or near this postal address: 2300 E Street Northwest, Washington DC 20037, United States of America. Marker can be reached from 23rd Street Northwest south of E Street Northwest, on the right when traveling south. The present location of the United States Naval Observatory, which has been at 3450 Massachusetts Avenue NW since 1893, is best understood by comparison its. Marker is in Foggy Bottom in Washington, District of Columbia. A significant historical year for this entry is 1842. This historical marker is listed in these topic lists: Military This Prime Meridian became the reference for determining the north-south boundaries of several western states. In the early 1850's the 0 degree meridian for the United States was established here. Eight years later the Naval Medical School moved here from Brooklyn, New York. In 1894 the domed structure became home to the Naval Museum of Hygiene. The United States Naval Observatory (USNO) provides a wide range of astronomical data and products, and serves as the official source of time for the U.S. Naval Observatory occupied this site from 1844 to 1893. Naval Observatory provides public time service via 26 NTP servers on the public Internet, and via telephone voice announcements: +1 202 762-1401 (Washington, D.C. Eight years later the Naval Medical School moved here from Brooklyn, New York., The Prime Meridian. In 1894 the domed structure became home to the Naval Museum of Hygiene. Naval Observatory occupied this site from 1844 to 1893. Naval Observatory, also, The Prime Meridian.
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