January 17 » The United States takes possession of Wake Island in the Pacific Ocean.
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 30 » German Society of Chemistry issues an invitation to other national scientific organizations to appoint delegates to the International Committee on Atomic Weights.
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 September 20, 1944
The temperature on September 20, 1944 was between 7.5 °C and 19.6 °C and averaged 13.5 °C. There was 3.9 hours of sunshine (31%). The average windspeed was 2 Bft (weak wind) and was prevailing from the southwest. Source: KNMI
In The Netherlands , there was from July 27, 1941 to February 23, 1945 the cabinet Gerbrandy II, with Prof. dr. P.S. Gerbrandy (ARP) as prime minister.
April 28 » World War II: Nine German E-boats attacked US and UK units during Exercise Tiger, the rehearsal for the Normandy landings, killing 946.
July 9 » World War II: American forces take Saipan, bringing the Japanese archipelago within range of B-29 raids, and causing the downfall of the Tojo government.
August 4 » The Holocaust: A tip from a Dutch informer leads the Gestapo to a sealed-off area in an Amsterdam warehouse, where they find and arrest Jewish diarist Anne Frank, her family, and four others.
September 3 » Holocaust: Diarist Anne Frank and her family are placed on the last transport train from the Westerbork transit camp to the Auschwitz concentration camp, arriving three days later.
September 19 » World War II: The Moscow Armistice between Finland and the Soviet Union is signed.
November 12 » World War II: The Royal Air Force launches 29 Avro Lancaster bombers, which sink the German battleship Tirpitz, with 12,000lb Tallboy bombs off Tromsø, Norway.
Day of death September 21, 1969
The temperature on September 21, 1969 was between 10.9 °C and 17.3 °C and averaged 15.3 °C. There was 0.8 mm of rain during 1.7 hours. The almost completely overcast was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the southwest. Source: KNMI
January 16 » Czech student Jan Palach commits suicide by self-immolation in Prague, Czechoslovakia, in protest against the Soviets' crushing of the Prague Spring the year before.
March 3 » Apollo program: NASA launches Apollo 9 to test the lunar module.
April 5 » Vietnam War: Massive antiwar demonstrations occur in many U.S. cities.
July 20 » A cease fire is announced between Honduras and El Salvador, six days after the beginning of the "Football War".
August 15 » The Woodstock Music & Art Fair opens in upstate New York, featuring some of the top rock musicians of the era.
November 24 » Apollo program: The Apollo 12 command module splashes down safely in the Pacific Ocean, ending the second manned mission to land on the Moon.
When copying data from this family tree, please include a reference to the origin: Monique Lassooij, "Family tree Lassooij -Toussaint - Ammerlaan - Onderwater", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-lassooij/R265.php : accessed February 21, 2026), "Arnoldus Cornelius Ammerlaan (1899-1969)".
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