February 14 » Voting machines are approved by the U.S. Congress for use in federal elections.
March 27 » Emilio Aguinaldo leads Filipino forces for the only time during the Philippine–American War at the Battle of Marilao River.
April 18 » The St. Andrew's Ambulance Association is granted a royal charter by Queen Victoria.
July 11 » Fiat founded by Giovanni Agnelli in Turin, Italy.
July 29 » The First Hague Convention is signed.
October 11 » The Second Boer War erupts in South Africa between the British-ruled Cape Colony, and the Boer-ruled Transvaal and Orange Free State.
Day of death April 21, 1978
The temperature on April 21, 1978 was between 4.8 °C and 14.9 °C and averaged 8.9 °C. There was 5.7 hours of sunshine (40%). The partly or heavily clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the west-southwest. Source: KNMI
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.
April 7 » Development of the neutron bomb is canceled by President Jimmy Carter.
April 28 » President of Afghanistan, Mohammed Daoud Khan, is overthrown and assassinated in a coup led by pro-communist rebels.
July 30 » The 730: Okinawa Prefecture changes its traffic on the right-hand side of the road to the left-hand side.
September 16 » The 7.4 Mw Tabas earthquake affects the city of Tabas, Iran with a maximum Mercalli intensity of IX (Violent). At least 15,000 people were killed.
September 25 » PSA Flight 182, a Boeing 727, collides in mid-air with a Cessna 172 and crashes in San Diego, killing 144 people.
November 23 » The Geneva Frequency Plan of 1975 goes into effect, realigning many of Europe's longwave and mediumwave broadcasting frequencies.
When copying data from this family tree, please include a reference to the origin: Lambert Pol, "Family tree Pol", database, Genealogy Online (https://www.genealogieonline.nl/pol-stamboom/R265.php : accessed March 13, 2026), "Helene Schuy (1899-1978)".
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