March 14 » The Gold Standard Act is ratified, placing the United States currency on the gold standard.
May 24 » Second Boer War: The United Kingdom annexes the Orange Free State.
June 20 » Baron Eduard Toll, leader of the Russian Polar Expedition of 1900, departs Saint Petersburg in Russia on the explorer ship Zarya, never to return.
July 2 » Jean Sibelius' Finlandia receives its première performance in Helsinki with the Helsinki Philharmonic Society conducted by Robert Kajanus.
October 25 » The United Kingdom annexes the Transvaal.
December 14 » Quantum mechanics: Max Planck presents a theoretical derivation of his black-body radiation law.
Day of marriage May 7, 1921
The temperature on May 7, 1921 was between 10.3 °C and 19.5 °C and averaged 14.8 °C. There was 3.3 hours of sunshine (22%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the south. 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.
February 15 » Kingdom of Romania establishes its legation in Helsinki.
March 19 » Irish War of Independence: One of the biggest engagements of the war takes place at Crossbarry, County Cork. About 100 Irish Republican Army (IRA) volunteers escape an attempt by over 1,300 British forces to encircle them.
May 3 » The Government of Ireland Act 1920 is passed, dividing Ireland into Northern Ireland and Southern Ireland.
August 14 » Tannu Uriankhai, later Tuvan People's Republic is established as a completely independent country (which is supported by Soviet Russia).
September 21 » A storage silo in Oppau, Germany, explodes, killing 500–600 people.
October 29 » United States: Second trial of Sacco and Vanzetti in Boston, Massachusetts.
Day of death May 20, 1979
The temperature on May 20, 1979 was between 8.9 °C and 19.1 °C and averaged 14.3 °C. There was 0.2 mm of rain during 0.2 hours. The heavily clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the east-southeast. 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 16 » The last Iranian Shah flees Iran with his family for good and relocates to Egypt.
February 17 » The Sino-Vietnamese War begins.
July 9 » A car bomb destroys a Renault motor car owned by "Nazi hunters" Serge and Beate Klarsfeld outside their home in France in an unsuccessful assassination attempt.
November 14 » Iran hostage crisis: US President Jimmy Carter issues Executive order 12170, freezing all Iranian assets in the United States in response to the hostage crisis.
December 4 » The Hastie fire in Hull kills three schoolboys and eventually leads police to arrest Bruce George Peter Lee.
December 10 » Kaohsiung Incident: Taiwanese pro-democracy demonstrations are suppressed by the KMT dictatorship, and organizers are arrested.
When copying data from this family tree, please include a reference to the origin: Hans Weening, "Family tree Weening", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-weening/I94849.php : accessed October 17, 2026), "Ankje de Boer (1900-1979)".
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