The temperature on April 22, 1915 was between -0.8 °C and 11.3 °C and averaged 5.2 °C. There was 9.6 hours of sunshine (67%). The average windspeed was 2 Bft (weak wind) and was prevailing from the northeast. Source: KNMI
In The Netherlands , there was from August 29, 1913 to September 9, 1918 the cabinet Cort van der Linden, with Mr. P.W.A. Cort van der Linden (liberaal) as prime minister.
February 12 » In Washington, D.C., the first stone of the Lincoln Memorial is put into place.
March 18 » World War I: During the Battle of Gallipoli, three battleships are sunk during a failed British and French naval attack on the Dardanelles.
April 18 » French pilot Roland Garros is shot down and glides to a landing on the German side of the lines during World War I.
May 9 » World War I: Second Battle of Artois between German and French forces.
May 17 » The last British Liberal Party government (led by H. H. Asquith) falls.
May 24 » World War I: Italy declares war on Austria-Hungary, joining the conflict on the side of the Allies.
Day of death July 19, 1970
The temperature on July 19, 1970 was between 12.7 °C and 17.1 °C and averaged 14.8 °C. There was 6.9 mm of rain during 3.2 hours. The almost completely overcast was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the southwest. Source: KNMI
January 5 » The 7.1 Mw Tonghai earthquake shakes Tonghai County, Yunnan province, China, with a maximum Mercalli intensity of X (Extreme). Between 10,000 and 15,000 people are known to have been killed and about another 26,000 are injured.
January 22 » The Boeing 747, the world's first "jumbo jet", enters commercial service for launch customer Pan American Airways with its maiden voyage from John F. Kennedy International Airport to London Heathrow Airport.
March 5 » The Treaty on the Non-Proliferation of Nuclear Weapons goes into effect after ratification by 43 nations.
April 8 » Bahr El-Baqar primary school bombing: Israeli bombers strike an Egyptian school. Forty-six children are killed.
April 17 » Apollo program: The ill-fated Apollo 13 spacecraft returns to Earth safely.
August 26 » A new feminist movement leads a nationwide Women's Strike for Equality.
When copying data from this family tree, please include a reference to the origin: Jan De Backer, "Family tree De Backer - Evers", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-de-backer-evers/I535077.php : accessed January 28, 2026), "Leon Vanderveken (1915-1970)".
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