The temperature on September 12, 1910 was between 8.4 °C and 17.8 °C and averaged 12.6 °C. There was 1.9 mm of rain. There was 2.2 hours of sunshine (17%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the north-northwest. Source: KNMI
August 22 » Korea is annexed by Japan with the signing of the Japan–Korea Treaty of 1910, beginning a period of Japanese rule of Korea that lasted until the end of World War II.
October 15 » Airship America is launched from New Jersey in the first attempt to cross the Atlantic by a powered aircraft.
October 21 » HMSNiobe arrives in Halifax Harbour to become the first ship of the Royal Canadian Navy.
October 22 » Hawley Harvey Crippen (the first felon to be arrested with the help of radio) is convicted of poisoning his wife.
November 20 » Mexican Revolution: Francisco I. Madero issues the Plan de San Luis Potosí, denouncing Mexican President Porfirio Díaz, calling for a revolution to overthrow the government of Mexico, effectively starting the Mexican Revolution.
Day of marriage July 13, 1939
The temperature on July 13, 1939 was between 6.5 °C and 22.9 °C and averaged 15.4 °C. There was 10.5 hours of sunshine (64%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south-southwest. Source: KNMI
In The Netherlands , there was from June 24, 1937 to July 25, 1939 the cabinet Colijn IV, with Dr. H. Colijn (ARP) as prime minister.
In The Netherlands , there was from July 25, 1939 to August 10, 1939 the cabinet Colijn V, with Dr. H. Colijn (ARP) as prime minister.
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.
March 14 » Slovakia declares independence under German pressure.
June 12 » The Baseball Hall of Fame opens in Cooperstown, New York.
September 6 » World War II: South Africa declares war on Nazi Germany.
September 14 » World War II: The Estonian military boards the Polish submarine ORPOrzeł in Tallinn, sparking a diplomatic incident that the Soviet Union will later use to justify the annexation of Estonia.
October 6 » World War II: The Battle of Kock is the final combat of the September Campaign in Poland.
December 4 » World War II: HMSNelson is struck by a mine (laid by U-31) off the Scottish coast and is laid up for repairs until August 1940.
Day of death February 28, 1976
The temperature on February 28, 1976 was between 1.5 °C and 12.7 °C and averaged 6.2 °C. There was 8.2 hours of sunshine (76%). The almost cloudless was. The average windspeed was 2 Bft (weak wind) and was prevailing from the south-southeast. 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.
March 24 » In Argentina, the armed forces overthrow the constitutional government of President Isabel Perón and start a 7-year dictatorial period self-styled the National Reorganization Process.
April 13 » Forty workers die in an explosion at the Lapua ammunition factory, the deadliest accidental disaster in modern history in Finland.
July 22 » Japan completes its last reparation to the Philippines for war crimes committed during imperial Japan's conquest of the country in the Second World War.
August 18 » In the Korean Demilitarized Zone at Panmunjom, the Axe murder incident results in the death of two US soldiers.
September 11 » A bomb planted by a Croatian terrorist, Zvonko Bušić, is found at New York's Grand Central Terminal; one NYPD officer is killed trying to defuse it.
December 3 » An assassination attempt is made on Bob Marley in Kingston, Jamaica just two days before the "Smile Jamaica", a free concert.
When copying data from this family tree, please include a reference to the origin: Rik Plomp, "Pedigree Plomp", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-plomp/I3087.php : accessed January 6, 2026), "Roelofje de Boer (1910-1976)".
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