Author: United States Naval Observatory
Alternate names: United States Naval Observatory.; United States. Naval observatory; U. S. Naval Observatory
Born: 6 December 1830
Bio: 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. Navy and the U.S. Department of Defense.
*(cited from Wikipedia [English])*