The temperature on June 18, 1911 was between 11.5 °C and 20.0 °C and averaged 15.8 °C. There was 7.8 mm of rain. There was 7.5 hours of sunshine (45%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the southwest. Source: KNMI
January 18 » Eugene B. Ely lands on the deck of the USSPennsylvania anchored in San Francisco Bay, the first time an aircraft landed on a ship.
May 21 » President of Mexico Porfirio Díaz and the revolutionary Francisco Madero sign the Treaty of Ciudad Juárez to put an end to the fighting between the forces of both men, concluding the initial phase of the Mexican Revolution.
May 31 » The RMS Titanic is launched in Belfast, Northern Ireland.
June 22 » Mexican Revolution: Government forces bring an end to the Magonista rebellion of 1911 in the Second Battle of Tijuana.
September 20 » The White Star Line's RMSOlympic collides with the British warship HMSHawke.
December 14 » Roald Amundsen's team, comprising himself, Olav Bjaaland, Helmer Hanssen, Sverre Hassel, and Oscar Wisting, becomes the first to reach the South Pole.
Day of marriage October 31, 1930
The temperature on October 31, 1930 was between 6.7 °C and 13.0 °C and averaged 10.4 °C. There was 0.6 mm of rain during 0.3 hours. There was 0.3 hours of sunshine (3%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the northwest. Source: KNMI
In The Netherlands , there was from August 10, 1929 to May 26, 1933 the cabinet Ruys de Beerenbrouck III, with Jonkheer mr. Ch.J.M. Ruys de Beerenbrouck (RKSP) as prime minister.
January 6 » The first diesel-powered automobile trip is completed, from Indianapolis, Indiana, to New York, New York.
January 26 » The Indian National Congress declares 26 January as Independence Day or as the day for Poorna Swaraj ("Complete Independence") which occurred 17 years later.
February 16 » The Romanian Football Federation joins FIFA.
June 21 » One-year conscription comes into force in France.
October 5 » British airship R101 crashes in France en route to India on its maiden voyage.
November 11 » Patent number US1781541 is awarded to Albert Einstein and Leó Szilárd for their invention, the Einstein refrigerator.
When copying data from this family tree, please include a reference to the origin: Hans Weening, "Family tree Weening", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-weening/I166479.php : accessed December 29, 2025), "Anna Maria Boonstra (1911-)".
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