The temperature on July 1, 1943 was between 11.6 °C and 22.6 °C and averaged 17.0 °C. There was 13.6 hours of sunshine (82%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the north-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.
April 13 » World War II: The discovery of mass graves of Polish prisoners of war killed by Soviet forces in the Katyń Forest Massacre is announced, causing a diplomatic rift between the Polish government-in-exile in London and the Soviet Union, which denies responsibility.
April 16 » Albert Hofmann accidentally discovers the hallucinogenic effects of the research drug LSD. He intentionally takes the drug three days later on April 19.
July 5 » World War II: An Allied invasion fleet sails for Sicily (Operation Husky, July 10, 1943).
July 23 » World War II: The British destroyers HMSEclipse and HMSLaforey sink the Italian submarineAscianghi in the Mediterranean after she torpedoes the cruiser HMSNewfoundland.
July 24 » World War II: Operation Gomorrah begins: British and Canadian aeroplanes bomb Hamburg by night, and American planes bomb the city by day. By the end of the operation in November, 9,000 tons of explosives will have killed more than 30,000 people and destroyed 280,000 buildings.
December 4 » World War II: In Yugoslavia, resistance leader Marshal Josip Broz Tito proclaims a provisional democratic Yugoslav government in-exile.
Day of marriage May 2, 1963
The temperature on May 2, 1963 was between 3.8 °C and 10.8 °C and averaged 7.4 °C. There was 0.1 mm of rain during 0.1 hours. There was 12.8 hours of sunshine (86%). The partly clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the west-northwest. Source: KNMI
May 11 » Racist bombings in Birmingham, Alabama, disrupt nonviolence in the Birmingham campaign and precipitate a crisis involving federal troops.
June 11 » Buddhist monk Thích Quảng Đức burns himself with gasoline in a busy Saigon intersection to protest the lack of religious freedom in South Vietnam.
June 11 » John F. Kennedy addresses Americans from the Oval Office proposing the Civil Rights Act of 1964, which would revolutionize American society by guaranteeing equal access to public facilities, ending segregation in education, and guaranteeing federal protection for voting rights.
July 12 » Pauline Reade, 16, disappears in Gorton, England, the first victim in the Moors murders.
July 19 » Joe Walker flies a North American X-15 to a record altitude of 106,010 meters (347,800 feet) on X-15 Flight 90. Exceeding an altitude of 100km, this flight qualifies as a human spaceflight under international convention.
December 25 » Turkish Cypriot Bayrak Radio begins transmitting in Cyprus after Turkish Cypriots are forcibly excluded from Cyprus Broadcasting Corporation.
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/I2371.php : accessed March 13, 2026), "Yvonne Cornelia Catharina "Yvon" Tomeij (1943-2020)".
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