The temperature on May 19, 1911 was between 8.4 °C and 12.0 °C and averaged 9.9 °C. There was 0.8 mm of rain. The average windspeed was 4 Bft (moderate breeze) and was prevailing from the north-northwest. Source: KNMI
January 3 » A magnitude 7.7 earthquake destroys the city of Almaty in Russian Turkestan.
January 15 » Palestinian Arabic-language Falastin newspaper 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.
June 22 » Mexican Revolution: Government forces bring an end to the Magonista rebellion of 1911 in the Second Battle of Tijuana.
August 1 » Harriet Quimby takes her pilot's test and becomes the first U.S. woman to earn an Aero Club of America aviator's certificate.
August 21 » The Mona Lisa is stolen by Vincenzo Peruggia, a Louvre employee.
Day of death April 12, 1954
The temperature on April 12, 1954 was between -0.5 °C and 11.0 °C and averaged 5.9 °C. There was -0.1 hours of sunshine (0%). The partly or heavily clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west-northwest. Source: KNMI
February 13 » Frank Selvy becomes the only NCAA Division I basketball player ever to score 100 points in a single game.
February 18 » The first Church of Scientology is established in Los Angeles.
March 1 » Armed Puerto Rican nationalists attack the United States Capitol building, injuring five Representatives.
June 27 » The FIFA World Cup quarterfinal match between Hungary and Brazil, highly anticipated to be exciting, instead turns violent, with three players ejected and further fighting continuing after the game.
July 21 » First Indochina War: The Geneva Conference partitions Vietnam into North Vietnam and South Vietnam.
October 15 » Hurricane Hazel devastates the eastern seaboard of North America, killing 95 and causing massive floods as far north as Toronto.
When copying data from this family tree, please include a reference to the origin: Jacobus Trox, "Lap family tree", database, Genealogy Online (https://www.genealogieonline.nl/lap-stamboom/I1186.php : accessed March 16, 2026), "Roelf Keijer (1886-1954)".
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