The temperature on March 23, 1911 was between 3.0 °C and 9.9 °C and averaged 5.6 °C. There was 5.5 hours of sunshine (45%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the northeast. Source: KNMI
February 18 » The first official flight with airmail takes place from Allahabad, United Provinces, British India (now India), when Henri Pequet, a 23-year-old pilot, delivers 6,500 letters to Naini, about 10 kilometres (6.2mi) away.
March 29 » The M1911 .45 ACP pistol becomes the official U.S. Army side arm.
June 16 » IBM founded as the Computing-Tabulating-Recording Company in Endicott, New York.
September 29 » Italy declares war on the Ottoman Empire.
November 5 » After declaring war on the Ottoman Empire on September 29, 1911, Italy annexes Tripoli and Cyrenaica.
November 11 » Many cities in the Midwestern United States break their record highs and lows on the same day as a strong cold front rolls through.
Day of marriage April 26, 1941
The temperature on April 26, 1941 was between -0.2 °C and 11.1 °C and averaged 5.7 °C. There was 13.3 hours of sunshine (91%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the northeast. 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.
February 5 » World War II: Allied forces begin the Battle of Keren to capture Keren, Eritrea.
March 7 » Günther Prien and the crew of German submarine U-47, one of the most successful U-boats of World War II, disappear without a trace.
April 27 » World War II: German troops enter Athens.
December 6 » World War II: The United Kingdom and Canada declare war on Finland in support of the Soviet Union during the Continuation War. Camp X opens in Canada to begin training Allied Secret Agents for the War.
December 12 » Adolf Hitler declares the imminent extermination of the Jews at a meeting in the Reich Chancellery.
December 21 » World War II: A formal treaty of alliance between Thailand and Japan is signed in the presence of the Emerald Buddha in Wat Phra Kaew, Thailand.
Day of death May 24, 1960
The temperature on May 24, 1960 was between 5.1 °C and 15.4 °C and averaged 12.0 °C. There was 8.1 mm of rain during 3.6 hours. There was 8.6 hours of sunshine (53%). The partly clouded was. The average windspeed was 4 Bft (moderate breeze) and was prevailing from the west-northwest. Source: KNMI
January 6 » National Airlines Flight 2511 is destroyed in mid-air by a bomb, while en route from New York City to Miami.
May 6 » More than 20million viewers watch the first televised royal wedding when Princess Margaret marries Anthony Armstrong-Jones at Westminster Abbey.
May 11 » Adolf Eichmann is captured by the Mossad in Argentina.
June 19 » The first NASCAR race was held at Charlotte Motor Speedway.
July 21 » Sirimavo Bandaranaike is elected Prime Minister of Sri Lanka, becoming the world's first female head of government
September 5 » Poet Léopold Sédar Senghor is the first elected President of Senegal.
When copying data from this family tree, please include a reference to the origin: Jan Kaper, "Family tree Kaper", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-kaper/I13245.php : accessed March 2, 2026), "Hittjo Siemon van der Wal (1911-1960)".
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