The temperature on March 1, 1911 was between 3.3 °C and 9.2 °C and averaged 6.1 °C. There was 1.4 mm of rain. There was 6.8 hours of sunshine (63%). The average windspeed was 5 Bft (very strong wind) and was prevailing from the west-northwest. Source: KNMI
April 2 » The Australian Bureau of Statistics conducts the country's first national census.
April 29 » Tsinghua University, one of mainland China's leading universities, is founded.
May 30 » At the Indianapolis Motor Speedway, the first Indianapolis 500 ends with Ray Harroun in his Marmon Wasp becoming the first winner of the 500-mile auto race.
July 7 » The United States, UK, Japan, and Russia sign the North Pacific Fur Seal Convention of 1911 banning open-water seal hunting, the first international treaty to address wildlife preservation issues.
September 18 » Russian Premier Pyotr Stolypin is shot at the Kiev Opera House.
September 20 » The White Star Line's RMSOlympic collides with the British warship HMSHawke.
Day of marriage September 13, 1945
The temperature on September 13, 1945 was between 11.1 °C and 21.2 °C and averaged 15.9 °C. There was 5.4 hours of sunshine (42%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the south-southeast. 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.
In The Netherlands , there was from February 23, 1945 to June 24, 1945 the cabinet Gerbrandy III, with Prof. dr. P.S. Gerbrandy (ARP) as prime minister.
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).
February 14 » World War II: Mostar is liberated by Yugoslav partisans
March 11 » World War II: The Empire of Vietnam, a short-lived Japanese puppet state, is established with Bảo Đại as its ruler.
April 25 » Liberation Day (Italy): The Nazi occupation army surrenders and leaves Northern Italy after a general partisan insurrection by the Italian resistance movement; the puppet fascist regime dissolves and Benito Mussolini is captured after trying to escape. This day was set as a public holiday to celebrate the Liberation of Italy.
July 29 » The BBC Light Programme radio station is launched for mainstream light entertainment and music.
September 15 » A hurricane strikes southern Florida and the Bahamas, destroying 366 airplanes and 25 blimps at Naval Air Station Richmond.
November 10 » Heavy fighting in Surabaya between Indonesian nationalists and returning colonialists after World War II, today celebrated as Heroes' Day (Hari Pahlawan).
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/I487528.php : accessed January 10, 2026), "Cornelis Slagter (1911-)".
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