April 14 » The Pan-American Union is founded by the First International Conference of American States in Washington, D.C.
September 12 » Salisbury, Rhodesia, is founded.
September 24 » The Church of Jesus Christ of Latter-day Saints officially renounces polygamy.
November 4 » City and South London Railway: London's first deep-level tube railway opens between King William Street and Stockwell.
December 15 » Hunkpapa Lakota leader Sitting Bull is killed on Standing Rock Indian Reservation, leading to the Wounded Knee Massacre.
December 22 » Cornwallis Valley Railway begins operation between Kentville and Kingsport, Nova Scotia.
Day of marriage December 23, 1911
The temperature on December 23, 1911 was between 1.3 °C and 8.1 °C and averaged 4.3 °C. There was 0.8 mm of rain. There was 3.9 hours of sunshine (51%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the northwest. Source: KNMI
January 29 » Mexican Revolution: Mexicali is captured by the Mexican Liberal Party, igniting the Magonista rebellion of 1911.
April 2 » The Australian Bureau of Statistics conducts the country's first national census.
April 8 » Dutch physicist Heike Kamerlingh Onnes discovers superconductivity.
May 23 » The New York Public Library is dedicated.
June 28 » The Nakhla meteorite, the first one to suggest signs of aqueous processes on Mars, falls to Earth, landing in Egypt.
September 23 » Pilot Earle Ovington makes the first official airmail delivery in America under the authority of the United States Post Office Department
When copying data from this family tree, please include a reference to the origin: P. Heres, "Family tree Haverkamp", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-haverkamp/I1099492493.php : accessed June 14, 2024), "Hendrika Eiland (1890-????)".
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