The temperature on December 24, 1911 was between 0.3 °C and 9.0 °C and averaged 5.1 °C. There was 1.4 mm of rain. The average windspeed was 5 Bft (very strong wind) and was prevailing from the south. Source: KNMI
January 29 » Mexican Revolution: Mexicali is captured by the Mexican Liberal Party, igniting the Magonista rebellion of 1911.
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 President of Mexico Porfirio Díaz flees the country during the Mexican Revolution.
September 7 » French poet Guillaume Apollinaire is arrested and put in jail on suspicion of stealing the Mona Lisa from the Louvre museum.
September 23 » Pilot Earle Ovington makes the first official airmail delivery in America under the authority of the United States Post Office Department
September 29 » Italy declares war on the Ottoman Empire.
When copying data from this family tree, please include a reference to the origin: C. Pfeiffer, "Family tree Pfeiffer", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-pfeiffer/I486.php : accessed March 4, 2026), "Petronella Hupje (1911-)".
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