Jan 1, 2022 • Wikireadia
A time ball or timeball is an obsolete time-signaling device. It consists of a large, painted wooden or metal ball that is dropped at a predetermined time, principally to enable navigators aboard ships offshore to verify the setting of their marine chronometers. Accurate timekeeping is essential to the determination of longitude at sea.
Wikipedia contributors. October 20, 2021. Time ball. (n.d.). In Wikipedia, The Free Encyclopedia. Retrieved December 24, 2021, from https://en.wikipedia.org/wiki/Time_ball
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Times Square Ball
Eden, Janine and Jim from New York City, CC BY 2.0, via Wikimedia Commons
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