The temperature on April 20, 1912 was between 3.4 °C and 19.5 °C and averaged 12.7 °C. There was 9.3 hours of sunshine (66%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the north-northeast. Source: KNMI
January 23 » The International Opium Convention is signed at The Hague.
February 14 » Arizona is admitted as the 48th and the last contiguous U.S. state.
April 14 » The British passenger liner RMSTitanic hits an iceberg in the North Atlantic at 23:40 (sinks morning of April 15th).
June 4 » Massachusetts becomes the first state of the United States to set a minimum wage.
October 17 » Bulgaria, Greece and Serbia declare war on the Ottoman Empire, joining Montenegro in the First Balkan War.
November 12 » King George I of Greece makes a triumphal entry into Thessaloniki after its liberation from 482 years of Ottoman rule.
Day of marriage February 14, 1952
The temperature on February 14, 1952 was between -2.6 °C and 2.9 °C and averaged -0.3 °C. There was 0.2 mm of rain during 1.1 hours. There was 2.3 hours of sunshine (23%). The partly or heavily clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south-southeast. Source: KNMI
February 6 » Elizabeth II becomes Queen of the United Kingdom and her other Realms and Territories and Head of the Commonwealth upon the death of her father, George VI. At the exact moment of succession, she was in a tree house at the Treetops Hotel in Kenya.
April 9 » Hugo Ballivián's government is overthrown by the Bolivian National Revolution, starting a period of agrarian reform, universal suffrage and the nationalization of tin mines
April 21 » Secretary's Day (now Administrative Professionals' Day) is first celebrated.
December 20 » A United States Air Force C-124 crashes and burns in Moses Lake, Washington killing 87.
December 24 » First flight of Britain's Handley Page Victor strategic bomber.
December 30 » An RAF Avro Lancaster bomber crashed in Luqa, Malta after an engine failure, killing three crew members and a civilian on the ground.
Day of death June 10, 1961
The temperature on June 10, 1961 was between 5.5 °C and 19.2 °C and averaged 13.6 °C. There was 10.0 hours of sunshine (60%). The partly clouded was. The average windspeed was 1 Bft (weak wind) and was prevailing from the southwest. Source: KNMI
February 16 » Explorer program: Explorer 9 (S-56a) is launched.
February 27 » The first congress of the Spanish Trade Union Organisation is inaugurated.
September 17 » The world's first retractable roof stadium, the Civic Arena, opens in Pittsburgh, Pennsylvania.
September 18 » CONCACAF is established as the governing body for association football in North America, Central America and the Caribbean.
October 1 » East and West Cameroon merge to form the Federal Republic of Cameroon.
December 2 » In a nationally broadcast speech, Cuban leader Fidel Castro declares that he is a Marxist–Leninist and that Cuba is going to adopt Communism.
When copying data from this family tree, please include a reference to the origin: Michael Jacobs, "Family tree Jacobs", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-michael-jacobs/I34296.php : accessed February 5, 2026), "Cyriel van Landschoot (1912-1961)".
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