The temperature on February 22, 1920 was between -1.0 °C and 7.5 °C and averaged 3.8 °C. There was 8.2 hours of sunshine (79%). The average windspeed was 4 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.
January 10 » The Treaty of Versailles takes effect, officially ending World War I.
February 10 » About 75% of the population in Zone I votes to join Denmark in the 1920 Schleswig plebiscites.
February 29 » Czechoslovak National Assembly adopts the Constitution.
April 28 » Azerbaijan is added to the Soviet Union.
July 29 » Construction of the Link River Dam begins as part of the Klamath Reclamation Project.
December 16 » The Haiyuan earthquake of 8.5Mw , rocks the Gansu province in China, killing an estimated 200,000.
Day of marriage April 11, 1942
The temperature on April 11, 1942 was between 4.3 °C and 15.7 °C and averaged 9.7 °C. There was 11.9 hours of sunshine (88%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the northwest. 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.
February 18 » World War II: The Imperial Japanese Army begins the systematic extermination of perceived hostile elements among the Chinese in Singapore.
March 26 » World War II: The first female prisoners arrive at Auschwitz concentration camp in German-occupied Poland.
May 8 » World War II: The Battle of the Coral Sea comes to an end with Imperial Japanese Navy aircraft carrier aircraft attacking and sinking the United States Navy aircraft carrier USSLexington.
July 6 » Anne Frank and her family go into hiding in the "Secret Annexe" above her father's office in an Amsterdam warehouse.
August 19 » World War II: Operation Jubilee: The 2nd Canadian Infantry Division leads an amphibious assault by allied forces on Dieppe, France and fails, many Canadians are killed or captured. The operation was intended to develop and try new amphibious landing tactics for the coming full invasion in Normandy.
November 10 » World War II: Germany invades Vichy France following French Admiral François Darlan's agreement to an armistice with the Allies in North Africa.
Day of death July 12, 1985
The temperature on July 12, 1985 was between 14.6 °C and 23.6 °C and averaged 18.6 °C. There was 6.4 hours of sunshine (39%). The partly clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the southwest. Source: KNMI
In The Netherlands , there was from Thursday, November 4, 1982 to Monday, July 14, 1986 the cabinet Lubbers I, with Drs. R.F.M. Lubbers (CDA) as prime minister.
January 7 » Japan Aerospace Exploration Agency launches Sakigake, Japan's first interplanetary spacecraft and the first deep space probe to be launched by any country other than the United States or the Soviet Union.
March 3 » A magnitude 8.3 earthquake strikes the Valparaíso Region of Chile, killing 177 and leaving nearly a million people homeless.
April 21 » The compound of the militant group The Covenant, The Sword, and the Arm of the Lord surrenders to federal authorities in Arkansas after a two-day government siege.
June 15 » Rembrandt's painting Danaë is attacked by a man (later judged insane) who throws sulfuric acid on the canvas and cuts it twice with a knife.
June 19 » Members of the Revolutionary Party of Central American Workers, dressed as Salvadoran soldiers, attack the Zona Rosa area of San Salvador.
July 10 » An Aeroflot Tupolev Tu-154 stalls and crashes near Uchkuduk, Uzbekistan (then part of the Soviet Union), killing all 200 people on board in the USSR's worst-ever airline disaster.
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/I145048.php : accessed October 24, 2026), "Pieter Heidstra (1920-1985)".
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