January 30 » The first Anglo-Japanese Alliance is signed in London.
March 7 » Second Boer War: Boers, led by Koos de la Rey, inflict the biggest defeat upon the British since the beginning of the war, at Tweebosch.
March 18 » Macario Sakay issues Presidential Order No. 1 of his Tagalog Republic.
June 24 » King Edward VII of the United Kingdom develops appendicitis, delaying his coronation.
August 22 » Cadillac Motor Company is founded.
November 21 » The Philadelphia Football Athletics defeated the Kanaweola Athletic Club of Elmira, New York, 39–0, in the first ever professional American football night game.
Day of death July 19, 1980
The temperature on July 19, 1980 was between 14.3 °C and 16.9 °C and averaged 15.4 °C. There was 10.0 mm of rain during 9.8 hours. The almost completely overcast 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.
March 4 » Nationalist leader Robert Mugabe wins a sweeping election victory to become Zimbabwe's first black prime minister.
March 14 » LOT Flight 7 crashes during final approach near Warsaw, Poland, killing 87 people, including a 14-man American boxing team.
April 24 » Eight U.S. servicemen die in Operation Eagle Claw as they attempt to end the Iran hostage crisis.
July 19 » Opening of the Summer Olympics in Moscow.
October 10 » The 7.1 Mw El Asnam earthquake shakes northern Algeria, killing 2,633 and injuring 8,369.
November 23 » The 6.9 Mw Irpinia earthquake shakes southern Italy with a maximum Mercalli intensity of X (Extreme), killing 2,483–4,900, and injuring 7,700–8,934.
Day of burial July 24, 1980
The temperature on July 24, 1980 was between 11.0 °C and 24.3 °C and averaged 17.7 °C. There was 10.6 hours of sunshine (67%). The partly clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the north. 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.
March 24 » El Salvadorian Archbishop Óscar Romero is assassinated while celebrating Mass in San Salvador.
July 8 » The inaugural 1980 State of Origin game is won by Queensland who defeat New South Wales 20–10 at Lang Park.
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.
August 1 » A train crash kills 18 people in County Cork, Ireland.
September 11 » A new constitution of Chile is established under the influence of then Chilean dictator Augusto Pinochet, which is subject to controversy in Chile today.
October 26 » The Peter Muhlenberg Memorial in Washington, D.C. is dedicated.
When copying data from this family tree, please include a reference to the origin: Jon Vandenberg, "Vandenberg Tree", database, Genealogy Online (https://www.genealogieonline.nl/vandenberg-tree/R1090.php : accessed February 12, 2026), "Jan Hopman (1902-1980)".
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