Where is the U.S. official time ball?
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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