The temperature on April 11, 1912 was between 0.1 °C and 9.1 °C and averaged 3.4 °C. There was 1.3 mm of rain. There was 7.8 hours of sunshine (57%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the west-northwest. Source: KNMI
January 6 » German geophysicist Alfred Wegener first presents his theory of continental drift.
March 12 » The Girl Guides (later renamed the Girl Scouts of the USA) are founded in the United States.
April 17 » Russian troops open fire on striking goldfield workers in northeast Siberia, killing at least 150.
August 6 » The Bull Moose Party meets at the Chicago Coliseum.
October 17 » Bulgaria, Greece and Serbia declare war on the Ottoman Empire, joining Montenegro in the First Balkan War.
November 28 » Albania declares its independence from the Ottoman Empire.
Day of marriage April 25, 1936
The temperature on April 25, 1936 was between 1.4 °C and 13.3 °C and averaged 9.2 °C. There was 0.1 mm of rain during 0.3 hours. There was 0.3 hours of sunshine (2%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the southwest. Source: KNMI
March 8 » Daytona Beach and Road Course holds its first oval stock car race.
May 5 » Italian troops occupy Addis Ababa, Ethiopia.
May 9 » Italy formally annexes Ethiopia after taking the capital Addis Ababa on May 5.
May 21 » Sada Abe is arrested after wandering the streets of Tokyo for days with her dead lover's severed genitals in her handbag. Her story soon becomes one of Japan's most notorious scandals.
July 17 » Spanish Civil War: An Armed Forces rebellion against the recently elected leftist Popular Front government of Spain starts the civil war.
August 3 » A fire wipes out Kursha-2 in the Meshchera Lowlands, Ryazan Oblast, Russia, killing 1,200 and leaving only 20 survivors.
Day of death January 2, 1980
The temperature on January 2, 1980 was between -2.1 °C and 2.9 °C and averaged -0.4 °C. There was 0.6 mm of rain during 0.2 hours. There was 2.7 hours of sunshine (34%). The partly clouded was. The average windspeed was 1 Bft (weak wind) and was prevailing from the northwest. Source: KNMI
In The Netherlands , there was from Monday, December 19, 1977 to Friday, September 11, 1981 the cabinet Van Agt I, with Mr. A.A.M. van Agt (CDA/KVP) as prime minister.
January 26 » Egypt–Israel relations are formally established.
February 22 » Miracle on Ice: In Lake Placid, New York, the United States hockey team defeats the Soviet Union hockey team 4–3.
March 21 » U.S. President Jimmy Carter announces a United States boycott of the 1980 Summer Olympics in Moscow to protest the Soviet–Afghan War.
April 2 » United States President Jimmy Carter signs the Crude Oil Windfall Profits Tax Act.
July 1 » "O Canada" officially becomes the national anthem of Canada.
November 23 » The 6.9 Mw Irpinia earthquake shakes southern Italy with a maximum Mercalli intensity of X (Extreme), killing 2,483–4,900, and injuring 7,700–8,934.
When copying data from this family tree, please include a reference to the origin: Joop Klavers, "Family tree Klavers", database, Genealogy Online (https://www.genealogieonline.nl/stamboom_klavers/I55239.php : accessed February 7, 2026), "Johannes Marinus "Jo" Hemel (1912-1980)".
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