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Greenwich Time and the Royal Observatory Centennial
The article recalls the 250th anniversary of Greenwich Royal Observatory and its role in establishing longitude and time standards. It covers Flamsteed, Halley, Bradley, and Dyson as astronomers royal, the observatory’s building, time balls, and how Greenwich time became the world standard with the international date line at 180 degrees. It also notes the U.S. Navy timekeeping practices and the zenith tube in Washington.
MENTIONED IN THIS ARTICLE
John Dickinson Sherman
Greenwich
Greenwich Observatory
St. Paul's Cathedral
Grinridge
Old Royal Observatory
Greater London
George
Queen Mary
International Astronomical Union
Indian Ocean
Western Avenue
Chicago
Madison Street
le Sieur de Sainte Pierre
Isle
Derby
Royal Society of London
Jonas Moore
Ordnance
London Tower
Charles II
Sainte Pierre
John Flamsteed
Royal Observatory
Charles
Greenwich Hill
Sir Christopher Wren
Tilbury Fort
Flamsteed
Edmund Halley
Halley
Bradley
Frank Dyson
Seven Seas
United States
United States Naval Observatory
mid-Pacific
New York
Denver
San Francisco
Sitka
Alaska
Honolulu
Manila
Apia
Samoa
Melbourne
Tokyo
Peking
London
Washington
Frank E. Ross
F. B. Littell
Peary