The temperature on May 24, 1911 was between 9.7 °C and 15.4 °C and averaged 13.1 °C. There was 0.6 mm of rain. The average windspeed was 2 Bft (weak wind) and was prevailing from the west. Source: KNMI
April 8 » Dutch physicist Heike Kamerlingh Onnes discovers superconductivity.
April 29 » Tsinghua University, one of mainland China's leading universities, is founded.
July 4 » A massive heat wave strikes the northeastern United States, killing 380 people in eleven days and breaking temperature records in several cities.
September 18 » Russian Premier Pyotr Stolypin is shot at the Kiev Opera House.
October 9 » An accidental bomb explosion triggers the Wuchang Uprising against the Chinese monarchy.
October 13 » Prince Arthur, Duke of Connaught and Strathearn, becomes the first Governor General of Canada of royal descent.
Day of marriage September 11, 1941
The temperature on September 11, 1941 was between 10.6 °C and 18.2 °C and averaged 14.1 °C. There was 7.7 mm of rain during 7.2 hours. There was 4.2 hours of sunshine (32%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the west-northwest. Source: KNMI
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.
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 21 » Sparked by the murder of a German officer in Bucharest, Romania the day before, members of the Iron Guard engaged in a rebellion and pogrom killing 125 Jews.
March 28 » World War II: Britain's Mediterranean Fleet sinks three heavy cruisers and two destroyers of Italy's Regia Marina.
April 23 » World War II: The Greek government and King George II evacuate Athens before the invading Wehrmacht.
August 24 » Adolf Hitler orders the cessation of Nazi Germany's systematic T4 euthanasia program of the mentally ill and the handicapped due to protests, although killings continue for the remainder of the war.
September 5 » Whole territory of Estonia is occupied by Nazi Germany.
December 19 » World War II: Adolf Hitler appoints himself as head of the Oberkommando des Heeres.
Day of death January 21, 1946
The temperature on January 21, 1946 was between -3.1 °C and 4.0 °C and averaged 0.8 °C. There was 2.3 hours of sunshine (27%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the south east. Source: KNMI
From June 24, 1945 till July 3, 1946 the Netherlands had a cabinet Schermerhorn - Drees with the prime ministers Prof. ir. W. Schermerhorn (VDB) and W. Drees (PvdA).
In The Netherlands , there was from July 3, 1946 to August 7, 1948 the cabinet Beel I, with Dr. L.J.M. Beel (KVP) as prime minister.
January 11 » Enver Hoxha, Secretary General of the Communist Party of Albania, declares the People's Republic of Albania with himself as head of state.
January 25 » United Nations Security Council Resolution 1 relating to Military Staff Committee is adopted.
April 1 » The 8.6 Mw Aleutian Islands earthquake shakes the Aleutian Islands with a maximum Mercalli intensity of VI (Strong). A destructive tsunami reaches the Hawaiian Islands resulting in dozens of deaths, mostly in Hilo, Hawaii.
April 18 » The International Court of Justice holds its inaugural meeting in The Hague, Netherlands.
September 20 » Six days after a referendum, King Christian X of Denmark annuls the declaration of independence of the Faroe Islands.
September 24 » The top-secret Clifford-Elsey Report on the Soviet Union is delivered to President Truman.
When copying data from this family tree, please include a reference to the origin: Hans Opperman, "Family tree Opperman", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-opperman/I3853.php : accessed January 19, 2026), "Catharina Hermina "Katrien" Tomeij (1911-1946)".
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