The temperature on April 27, 1912 was between 2.3 °C and 16.1 °C and averaged 9.7 °C. There was 12.7 hours of sunshine (87%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the northeast. Source: KNMI
January 6 » German geophysicist Alfred Wegener first presents his theory of continental drift.
February 25 » Marie-Adélaïde, the eldest of six daughters of Guillaume IV, becomes the first reigning Grand Duchess of Luxembourg.
April 10 » RMS Titanic sets sail from Southampton, England on her maiden and only voyage.
September 28 » The Ulster Covenant is signed by some 500,000 Ulster Protestant Unionists in opposition to the Third Irish Home Rule Bill.
October 3 » U.S. forces defeat Nicaraguan rebels at the Battle of Coyotepe Hill.
Day of marriage March 23, 1940
The temperature on March 23, 1940 was between 5.5 °C and 10.1 °C and averaged 7.6 °C. There was 2.5 mm of rain during 3.0 hours. The average windspeed was 2 Bft (weak wind) and was prevailing from the west-southwest. Source: KNMI
In The Netherlands , there was from August 10, 1939 to September 3, 1940 the cabinet De Geer II, with Jonkheer mr. D.J. de Geer (CHU) as prime minister.
In The Netherlands , there was from September 3, 1940 to July 27, 1941 the cabinet Gerbrandy I, with Prof. dr. P.S. Gerbrandy (ARP) as prime minister.
March 30 » Second Sino-Japanese War: Japan declares Nanking capital of a new Chinese puppet government, nominally controlled by Wang Jingwei.
May 20 » The Holocaust: The first prisoners arrive at a new concentration camp at Auschwitz.
June 21 » World War II: Italy begins an unsuccessful invasion of France.
November 12 » World War II: Soviet Foreign Minister Vyacheslav Molotov arrives in Berlin to discuss the possibility of the Soviet Union joining the Axis Powers.
November 16 » World War II: In response to the leveling of Coventry by the German Luftwaffe two days before, the Royal Air Force bombs Hamburg.
November 27 » In Romania, the ruling Iron Guard fascist party assassinates over 60 of arrested King Carol II of Romania's aides and other political dissidents.
Day of death July 26, 1975
The temperature on July 26, 1975 was between 9.7 °C and 21.2 °C and averaged 15.6 °C. There was -0.1 mm of rain. There was 5.9 hours of sunshine (37%). The partly clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the west-southwest. Source: KNMI
In The Netherlands , there was from Friday, May 11, 1973 to Monday, December 19, 1977 the cabinet Den Uyl, with Drs. J.M. den Uyl (PvdA) as prime minister.
May 10 » Sony introduces the Betamax videocassette recorder.
May 28 » Fifteen West African countries sign the Treaty of Lagos, creating the Economic Community of West African States.
July 6 » The Comoros declares independence from France.
September 28 » The Spaghetti House siege, in which nine people are taken hostage, takes place in London.
November 7 » In Bangladesh, a joint force of people and soldiers takes part in an uprising led by Colonel Abu Taher that ousts and kills Brigadier Khaled Mosharraf, freeing the then house-arrested army chief and future president Maj-Gen. Ziaur Rahman.
November 12 » The Comoros joins the United Nations.
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/I540299.php : accessed February 28, 2026), "Harmannus Heins (1912-1975)".
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