Where is the U.S. official time ball?
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Published in Daily Trivia
The official time ball for the U.S. is on top of the U.S. Naval Observatory in Washington, D.C. As early as 1845, the U.S. Navy dropped a time ball every day at noon from atop a building on a hill overlooking Washington, D.C. People from many miles away could set their watches at noon. Ships anchored in the Potomac River could check their chronometers.
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