The temperature on April 21, 1917 was between 3.4 °C and 9.8 °C and averaged 5.8 °C. There was 3.5 hours of sunshine (25%). The average windspeed was 5 Bft (very strong wind) and was prevailing from the north-northwest. 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.
January 11 » The Kingsland munitions factory explosion occurs as a result of sabotage.
January 19 » Silvertown explosion: A blast at a munitions factory in London kills 73 and injures over 400. The resulting fire causes over £2,000,000 worth of damage.
June 13 » World War I: The deadliest German air raid on London of the war is carried out by Gotha G.IV bombers and results in 162 deaths, including 46 children, and 432 injuries.
November 26 » The Manchester Guardian publishes the 1916 secret Sykes-Picot Agreement between the United Kingdom and France.
November 28 » The Estonian Provincial Assembly declares itself the sovereign power of Estonia.
December 20 » Cheka, the first Soviet secret police force, is founded.
Day of marriage April 16, 1942
The temperature on April 16, 1942 was between 0.6 °C and 15.3 °C and averaged 9.3 °C. There was 12.8 hours of sunshine (92%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the east-northeast. 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.
January 12 » World War II: United States President Franklin D. Roosevelt creates the National War Labor Board.
January 16 » Crash of TWA Flight 3, killing all 22 aboard, including film star Carole Lombard.
February 1 » World War II: Josef Terboven, Reichskommissar of German-occupied Norway, appoints Vidkun Quisling the Minister President of the National Government.
February 9 » Year-round Daylight saving time (aka War Time) is re-instated in the United States as a wartime measure to help conserve energy resources.
July 6 » Anne Frank and her family go into hiding in the "Secret Annexe" above her father's office in an Amsterdam warehouse.
November 13 » World War II: Naval Battle of Guadalcanal: U.S. and Japanese ships engage in an intense, close-quarters surface naval engagement during the Guadalcanal Campaign.
Day of death August 11, 1970
The temperature on August 11, 1970 was between 8.2 °C and 20.2 °C and averaged 15.3 °C. There was 0.1 mm of rain during 0.1 hours. There was 8.4 hours of sunshine (56%). The partly clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the north-northwest. Source: KNMI
March 6 » An explosion at the Weather Underground safe house in Greenwich Village kills three.
April 6 » Newhall massacre: Four California Highway Patrol officers are killed in a shootout.
June 4 » Tonga gains independence from the United Kingdom.
July 21 » After 11 years of construction, the Aswan High Dam in Egypt is completed.
October 5 » The British Trade Commissioner is kidnapped by members of the FLQ, triggering the October Crisis in Canada.
November 10 » Vietnam War: Vietnamization: For the first time in five years, an entire week ends with no reports of American combat fatalities in Southeast Asia.
Day of burial August 15, 1970
The temperature on August 15, 1970 was between 6.9 °C and 20.7 °C and averaged 14.5 °C. There was 8.8 hours of sunshine (60%). The partly clouded was. The average windspeed was 2 Bft (weak wind) 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.
February 18 » The Chicago Seven are found not guilty of conspiring to incite riots at the 1968 Democratic National Convention.
April 22 » The first Earth Day is celebrated.
April 29 » Vietnam War: United States and South Vietnamese forces invade Cambodia to hunt Viet Cong.
July 3 » The Troubles: The "Falls Curfew" begins in Belfast, Northern Ireland.
September 16 » King Hussein of Jordan declares war against the Palestine Liberation Organization, the conflict which became to be known as Black September.
When copying data from this family tree, please include a reference to the origin: P.M. Baert, "Family tree Baert", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-baert/I2440.php : accessed February 5, 2026), "Pieter Konijnenburg (1917-1970)".
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