March 4 » Cyclone Mahina sweeps in north of Cooktown, Queensland, with a 12 metres (39ft) wave that reaches up to 5 kilometres (3.1mi) inland, killing over 300.
March 6 » Bayer registers "Aspirin" as a trademark.
July 17 » NEC Corporation is organized as the first Japanese joint venture with foreign capital.
July 26 » Ulises Heureaux, the 27th President of the Dominican Republic, is assassinated.
July 29 » The First Hague Convention is signed.
November 28 » The Second Boer War: a British column is engaged by Boer forces at the Battle of Modder River; although the Boers withdraw, the British suffer heavy casualties.
Day of marriage May 31, 1919
The temperature on May 31, 1919 was between 8.2 °C and 23.0 °C and averaged 15.4 °C. There was 12.9 hours of sunshine (79%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the north-northeast. 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.
April 13 » Jallianwala Bagh massacre: British Indian Army troops lead by Brigadier-General Reginald Dyer killed approx 379-1000 unarmed demonstrators including men and women in Amritsar, India; and approximately 1,500 injured.
May 4 » May Fourth Movement: Student demonstrations take place in Tiananmen Square in Beijing, China, protesting the Treaty of Versailles, which transferred Chinese territory to Japan.
May 27 » The NC-4 aircraft arrives in Lisbon after completing the first transatlantic flight.
June 15 » John Alcock and Arthur Brown complete the first nonstop transatlantic flight when they reach Clifden, County Galway, Ireland.
October 7 » KLM, the flag carrier of the Netherlands, is founded. It is the oldest airline still operating under its original name.
November 11 » The Industrial Workers of the World attack an Armistice Day parade in Centralia, Washington, ultimately resulting in the deaths of five people.
Day of death April 22, 1972
The temperature on April 22, 1972 was between 5.3 °C and 13.8 °C and averaged 9.2 °C. There was 4.3 hours of sunshine (30%). The partly clouded was. The average windspeed was 4 Bft (moderate breeze) and was prevailing from the northeast. Source: KNMI
In The Netherlands , there was from April 5, 1967 to Tuesday, July 6, 1971 the cabinet Biesheuvel I, with Mr. B.W. Biesheuvel (ARP) as prime minister.
In The Netherlands , there was from Thursday, July 20, 1972 to Friday, May 11, 1973 the cabinet Biesheuvel II, with Mr. B.W. Biesheuvel (ARP) as prime minister.
April 20 » Apollo program: Apollo 16 lunar module, commanded by John Young and piloted by Charles Duke, lands on the moon.
May 15 » The Ryukyu Islands, under U.S. military governance since its conquest in 1945, reverts to Japanese control.
June 23 » Watergate scandal: U.S. President Richard M. Nixon and White House Chief of Staff H. R. Haldeman are taped talking about using the Central Intelligence Agency to obstruct the Federal Bureau of Investigation's investigation into the Watergate break-ins.
August 11 » Vietnam War: The last United States ground combat unit leaves South Vietnam.
September 5 » Munich massacre: A Palestinian terrorist group called "Black September" attacks and takes hostage 11 Israeli athletes at the Munich Olympic Games. Two die in the attack and nine are murdered the following day.
December 8 » United Airlines Flight 553, a Boeing 737, crashes after aborting its landing attempt at Chicago Midway International Airport, killing 45. This is the first-ever loss of a Boeing 737.
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/I27004.php : accessed October 8, 2026), "Iekje Zwama (1899-1972)".
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