May 1 » Spanish–American War: Battle of Manila Bay: The Asiatic Squadron of the United States Navy destroys the Pacific Squadron of the Spanish Navy after a seven-hour battle. Spain loses all seven of its ships, and 381 Spanish sailors die. There are no American vessel losses or combat deaths.
July 3 » A Spanish squadron, led by Pascual Cervera y Topete, is defeated by an American squadron under William T. Sampson in the Battle of Santiago de Cuba.
July 25 » Spanish-American War: The American invasion of Spanish-held Puerto Rico begins, as United States Army troops under General Nelson A. Miles land and secure the port at Guánica.
August 28 » Caleb Bradham's beverage "Brad's Drink" is renamed "Pepsi-Cola".
September 10 » Empress Elisabeth of Austria is assassinated by Luigi Lucheni.
September 13 » Hannibal Goodwin patents celluloid photographic film.
Day of death September 20, 1977
The temperature on September 20, 1977 was between 5.6 °C and 15.6 °C and averaged 11.2 °C. There was 0.9 hours of sunshine (7%). The partly or heavily clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the north-northeast. Source: KNMI
In The Netherlands , there was from Friday, May 11, 1973 to Monday, December 19, 1977 the cabinet Den Uyl, with Drs. J.M. den Uyl (PvdA) as prime minister.
In The Netherlands , there was from Monday, December 19, 1977 to Friday, September 11, 1981 the cabinet Van Agt I, with Mr. A.A.M. van Agt (CDA/KVP) as prime minister.
March 24 » Morarji Desai became the Prime Minister of India, the first Prime Minister not to belong to Indian National Congress.
May 31 » The Trans-Alaska Pipeline System is completed.
July 19 » The world's first Global Positioning System (GPS) signal was transmitted from Navigation Technology Satellite 2 (NTS-2) and received at Rockwell Collins in Cedar Rapids, Iowa, at 12:41a.m. Eastern time (ET).
August 26 » The Charter of the French Language is adopted by the National Assembly of Quebec
November 8 » Manolis Andronikos, a Greek archaeologist and professor at the Aristotle University of Thessaloniki, discovers the tomb of Philip II of Macedon at Vergina.
December 18 » United Airlines Flight 2860 crashes near Kaysville, Utah, killing all three crew members on board.
When copying data from this family tree, please include a reference to the origin: P. Heres, "Family tree Eilander", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-eilander/I1099530309.php : accessed February 23, 2026), "Hendrikus Zwerus (1898-1977)".
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