The temperature on June 18, 1912 was between 10.0 °C and 17.3 °C and averaged 14.3 °C. There was 8.6 mm of rain. There was 0.9 hours of sunshine (5%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west-southwest. Source: KNMI
January 6 » German geophysicist Alfred Wegener first presents his theory of continental drift.
February 14 » Arizona is admitted as the 48th and the last contiguous U.S. state.
May 5 » Pravda, the "voice" of the Communist Party of the Soviet Union, begins publication in Saint Petersburg.
September 4 » Albanian rebels succeed in their revolt when the Ottoman Empire agrees to fulfill their demands
October 24 » First Balkan War: The Battle of Kirk Kilisse concludes with a Bulgarian victory against the Ottoman Empire.
December 28 » The first municipally owned streetcars take to the streets in San Francisco.
Day of marriage August 2, 1938
The temperature on August 2, 1938 was between 17.5 °C and 28.9 °C and averaged 22.1 °C. There was 13.1 hours of sunshine (85%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the north-northeast. Source: KNMI
January 28 » The World Land Speed Record on a public road is broken by Rudolf Caracciola in the Mercedes-Benz W195 at a speed of 432.7 kilometres per hour (268.9mph).
February 18 » Second Sino-Japanese War: During the Nanking Massacre, the Nanking Safety Zone International Committee is renamed "Nanking International Rescue Committee", and the safety zone in place for refugees falls apart.
May 26 » In the United States, the House Un-American Activities Committee begins its first session.
June 23 » The Civil Aeronautics Act is signed into law, forming the Civil Aeronautics Authority in the United States.
September 12 » Adolf Hitler demands autonomy and self-determination for the Germans of the Sudetenland region of Czechoslovakia.
September 30 » The League of Nations unanimously outlaws "intentional bombings of civilian populations".
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/I167463.php : accessed December 24, 2025), "Mark Boersma (1912-)".
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