April 30 » J. J. Thomson of the Cavendish Laboratory announces his discovery of the electron as a subatomic particle, over 1,800 times smaller than a proton (in the atomic nucleus), at a lecture at the Royal Institution in London.
May 26 » The original manuscript of William Bradford's history, "Of Plymouth Plantation" is returned to the Governor of Massachusetts by the Bishop of London after being taken during the American Revolutionary War.
June 16 » A treaty annexing the Republic of Hawaii to the United States is signed; the Republic would not be dissolved until a year later.
July 11 » Salomon August Andrée leaves Spitsbergen to attempt to reach the North Pole by balloon. He later crashes and dies.
August 21 » Oldsmobile, an American automobile manufacturer and marque, is founded.
September 11 » After months of pursuit, generals of Menelik II of Ethiopia capture Gaki Sherocho, the last king of Kaffa, bringing an end to that ancient kingdom.
Day of marriage June 16, 1920
The temperature on June 16, 1920 was between 11.7 °C and 25.3 °C and averaged 19.2 °C. There was 14.0 hours of sunshine (84%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the east-southeast. Source: KNMI
In The Netherlands , there was from September 9, 1918 to September 18, 1922 the cabinet Ruys de Beerenbrouck I, with Jonkheer mr. Ch.J.M. Ruys de Beerenbrouck (RKSP) as prime minister.
January 19 » The American Civil Liberties Union (ACLU) is founded.
February 10 » Józef Haller de Hallenburg performs symbolic wedding of Poland to the sea, celebrating restitution of Polish access to open sea.
March 8 » The Arab Kingdom of Syria, the first modern Arab state to come into existence, is established.
March 22 » Azeri and Turkish army soldiers with participation of Kurdish gangs attacked the Armenian inhabitants of Shushi (Nagorno Karabakh).
April 15 » Two security guards are murdered during a robbery in South Braintree, Massachusetts. Anarchists Sacco and Vanzetti would be convicted of and executed for the crime, amid much controversy.
August 20 » The National Football League is organized as the American Professional Football Conference in Canton, Ohio
Day of death January 25, 1980
The temperature on January 25, 1980 was between 0.4 °C and 5.0 °C and averaged 2.6 °C. There was 2.0 mm of rain during 0.5 hours. There was 1.0 hours of sunshine (12%). The heavily clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the west-northwest. 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.
May 8 » The World Health Organization confirms the eradication of smallpox.
May 18 » Students in Gwangju, South Korea begin demonstrations calling for democratic reforms.
June 10 » The African National Congress in South Africa publishes a call to fight from their imprisoned leader Nelson Mandela.
September 30 » Ethernet specifications are published by Xerox working with Intel and Digital Equipment Corporation.
October 10 » The 7.1 Mw El Asnam earthquake shakes northern Algeria, killing 2,633 and injuring 8,369.
October 30 » El Salvador and Honduras agree to put the border dispute fought over in 1969's Football War before the International Court of Justice.
Day of cremation January 31, 1980
The temperature on January 31, 1980 was between 2.9 °C and 10.7 °C and averaged 7.0 °C. There was 23.9 mm of rain during 8.5 hours. There was 2.7 hours of sunshine (30%). The heavily clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the 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.
January 21 » Iran Air Flight 291 crashes in the Alborz Mountains while on approach to Mehrabad International Airport in Tehran, Iran, killing 128 people.
February 24 » The United States Olympic hockey team completes its Miracle on Ice by defeating Finland 4–2 to win the gold medal.
March 18 » A Vostok-2M rocket at Plesetsk Cosmodrome Site 43 explodes during a fueling operation, killing 48 people.
March 21 » U.S. President Jimmy Carter announces a United States boycott of the 1980 Summer Olympics in Moscow to protest the Soviet–Afghan War.
July 19 » Opening of the Summer Olympics in Moscow.
July 24 » The Quietly Confident Quartet of Australia wins the men's 4 x 100 metre medley relay at the Moscow Olympics, the only time the United States has not won the event at Olympic level.
When copying data from this family tree, please include a reference to the origin: R.A.Hemerik, "Descendants Hemerik-Broekhuizen-Huner-Koper-Barink", database, Genealogy Online (https://www.genealogieonline.nl/parenteel-hemerik/I28626.php : accessed March 16, 2026), "Catharina Clasina Gordijn (1897-1980)".
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