The temperature on May 13, 1912 was between 2.4 °C and 13.8 °C and averaged 9.3 °C. There was 0.6 mm of rain. There was 11.2 hours of sunshine (72%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the northwest. Source: KNMI
January 23 » The International Opium Convention is signed at The Hague.
March 6 » Italo-Turkish War: Italian forces become the first to use airships in war, as two dirigibles drop bombs on Turkish troops encamped at Janzur, from an altitude of 6,000 feet.
March 30 » Sultan Abd al-Hafid signs the Treaty of Fez, making Morocco a French protectorate.
April 16 » Harriet Quimby becomes the first woman to fly an airplane across the English Channel.
October 11 » First Balkan War: The day after the Battle of Sarantaporo, Greek troops liberate the city of Kozani.
October 18 » First Balkan War: King Peter I of Serbia issues a declaration "To the Serbian People", as his country joins the war.
When copying data from this family tree, please include a reference to the origin: Frans Van Gestel, "Family tree Van Gestel", database, Genealogy Online (https://www.genealogieonline.nl/van-gestel-stamboom/I377.php : accessed February 21, 2026), "Joannes Eduardus Ceelen (1912-)".
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