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The Royal Greenwich Observatory begins broadcasting the hourly time signals known as the Greenwich Time Signal.
Related Wikipedia articles
Royal Observatory, Greenwich
Observatory in London, England
The Royal Observatory, Greenwich is an observatory situated on a hill in Greenwich Park in south east London, overlooking the River Thames to the north. It played a major role in the history of astronomy and navigation, and because the Prime Meridian passed through it, it gave…Source: Wikipedia (CC BY-SA)
Greenwich Time Signal
Series of six pips broadcast by the BBC
The Greenwich Time Signal (GTS), popularly known as the pips, is a series of six short tones broadcast at one-second intervals by many BBC Radio stations to mark the precise start of each hour. The pips were introduced in 1924, generated by the Royal Observatory, Greenwich, and…Source: Wikipedia (CC BY-SA)