The temperature on April 15, 1911 was between 5.3 °C and 15.2 °C and averaged 9.8 °C. There was 10.7 hours of sunshine (77%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the west. 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.
May 15 » More than 300 Chinese immigrants are killed in the Torreón massacre when the forces of the Mexican Revolution led by Emilio Madero take the city of Torreón from the Federales.
August 21 » The Mona Lisa is stolen by Vincenzo Peruggia, a Louvre employee.
September 20 » The White Star Line's RMSOlympic collides with the British warship HMSHawke.
November 17 » Omega Psi Phi fraternity was founded on the campus of Howard University in Washington, D.C.
Day of death September 17, 1973
The temperature on September 17, 1973 was between 13.6 °C and 24.3 °C and averaged 18.6 °C. There was 0.7 mm of rain during 0.8 hours. There was 5.5 hours of sunshine (44%). The partly or heavily clouded was. The average windspeed was 1 Bft (weak wind) and was prevailing from the south-southeast. Source: KNMI
In The Netherlands , there was from Thursday, July 20, 1972 to Friday, May 11, 1973 the cabinet Biesheuvel II, with Mr. B.W. Biesheuvel (ARP) as prime minister.
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.
April 2 » Launch of the LexisNexis computerized legal research service.
June 3 » A Soviet supersonic Tupolev Tu-144 crashes near Goussainville, France, killing 14, the first crash of a supersonic passenger aircraft.
July 12 » A fire destroys the entire sixth floor of the National Personnel Records Center of the United States.
October 16 » Henry Kissinger and Lê Đức Thọ are awarded the Nobel Peace Prize.
November 27 » Twenty-fifth Amendment: The United States Senate votes 92–3 to confirm Gerald Ford as Vice President of the United States. (On December 6, the House will confirm him 387–35).
December 9 » British and Irish authorities sign the Sunningdale Agreement in an attempt to establish a power-sharing Northern Ireland Executive and a cross-border Council of Ireland.
When copying data from this family tree, please include a reference to the origin: Peeters Mathieu, "FutureHistory", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-riske/I1738.php : accessed September 27, 2026), "Irma Maria Raemdonck (1911-1973)".
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