The temperature on August 18, 1912 was between 12.7 °C and 21.5 °C and averaged 15.9 °C. There was 1.7 mm of rain. There was 2.3 hours of sunshine (16%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south. Source: KNMI
March 5 » Italo-Turkish War: Italian forces are the first to use airships for military purposes, employing them for reconnaissance behind Turkish lines.
March 30 » Sultan Abd al-Hafid signs the Treaty of Fez, making Morocco a French protectorate.
June 8 » Carl Laemmle incorporates Universal Pictures.
October 7 » The Helsinki Stock Exchange sees its first transaction.
October 19 » Italo-Turkish War: Italy takes possession of what is now Libya from the Ottoman Empire.
October 24 » First Balkan War: The Battle of Kumanovo concludes with the Serbian victory against the Ottoman Empire.
Day of marriage May 15, 1937
The temperature on May 15, 1937 was between 10.2 °C and 16.3 °C and averaged 12.5 °C. There was 12.5 mm of rain during 9.2 hours. There was 0.7 hours of sunshine (4%). The average windspeed was 2 Bft (weak wind) and was prevailing from the northeast. Source: KNMI
June 11 » Great Purge: The Soviet Union under Joseph Stalin executes eight army leaders.
June 30 » The world's first emergency telephone number, 999, is introduced in London.
September 25 » Second Sino-Japanese War: The Chinese Eighth Route Army gains a minor, but morale-boosting victory in the Battle of Pingxingguan.
December 9 » Second Sino-Japanese War: Battle of Nanking: Japanese troops under the command of Lt. Gen. Asaka Yasuhiko launch an assault on the Chinese city of Nanjing (Nanking).
December 16 » Theodore Cole and Ralph Roe attempt to escape from the American federal prison on Alcatraz Island in San Francisco Bay; neither is ever seen again.
When copying data from this family tree, please include a reference to the origin: Joop Klavers, "Family tree Klavers", database, Genealogy Online (https://www.genealogieonline.nl/stamboom_klavers/I193451.php : accessed February 5, 2026), "Geert Staal (1912-)".
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