The temperature on April 17, 1912 was between 1.7 °C and 15.3 °C and averaged 9.6 °C. There was 11.8 hours of sunshine (84%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the east. Source: KNMI
January 23 » The International Opium Convention is signed at The Hague.
May 8 » Paramount Pictures is founded.
May 13 » The Royal Flying Corps, the forerunner of the Royal Air Force, is established in the United Kingdom.
June 30 » The Regina Cyclone, Canada's deadliest tornado event, kills 28 people in Regina, Saskatchewan.
October 17 » Bulgaria, Greece and Serbia declare war on the Ottoman Empire, joining Montenegro in the First Balkan War.
October 24 » First Balkan War: The Battle of Kumanovo concludes with the Serbian victory against the Ottoman Empire.
Day of marriage May 22, 1937
The temperature on May 22, 1937 was between 4.6 °C and 19.4 °C and averaged 13.6 °C. There was 11.1 hours of sunshine (69%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south-southwest. Source: KNMI
January 23 » The trial of the anti-Soviet Trotskyist center sees seventeen mid-level Communists accused of sympathizing with Leon Trotsky and plotting to overthrow Joseph Stalin's regime.
April 30 » The Commonwealth of the Philippines holds a plebiscite for Filipino women on whether they should be extended the right to suffrage; over 90% would vote in the affirmative.
May 21 » A Soviet station, North Pole-1, becomes the first scientific research settlement to operate on the drift ice of the Arctic Ocean.
July 7 » The Marco Polo Bridge Incident provides the Imperial Japanese Army with a pretext for starting the Second Sino-Japanese War.
July 26 » Spanish Civil War: End of the Battle of Brunete with the Nationalist victory.
August 24 » Spanish Civil War: Sovereign Council of Asturias and León is proclaimed in Gijón.
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/I167537.php : accessed October 23, 2026), "Hendrikus Walda (1912-)".
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