The temperature on May 30, 1912 was between 5.5 °C and 19.9 °C and averaged 13.0 °C. There was 0.1 mm of rain. There was 8.7 hours of sunshine (53%). The average windspeed was 2 Bft (weak wind) and was prevailing from the north-northeast. Source: KNMI
January 23 » The International Opium Convention is signed at The Hague.
October 7 » The Helsinki Stock Exchange sees its first transaction.
October 8 » The First Balkan War begins when Montenegro declares war against the Ottoman Empire.
November 7 » The Deutsche Opernhaus (now Deutsche Oper Berlin) opens in the Berlin neighborhood of Charlottenburg, with a production of Beethoven's Fidelio.
December 3 » Bulgaria, Greece, Montenegro, and Serbia (the Balkan League) sign an armistice with the Ottoman Empire, temporarily halting the First Balkan War. (The armistice will expire on February 3, 1913, and hostilities will resume.)
December 16 » First Balkan War: The Royal Hellenic Navy defeats the Ottoman Navy at the Battle of Elli.
Day of marriage September 14, 1940
The temperature on September 14, 1940 was between 7.1 °C and 15.1 °C and averaged 10.9 °C. There was 12.2 mm of rain during 2.7 hours. There was 5.3 hours of sunshine (41%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the west-southwest. Source: KNMI
In The Netherlands , there was from August 10, 1939 to September 3, 1940 the cabinet De Geer II, with Jonkheer mr. D.J. de Geer (CHU) as prime minister.
In The Netherlands , there was from September 3, 1940 to July 27, 1941 the cabinet Gerbrandy I, with Prof. dr. P.S. Gerbrandy (ARP) as prime minister.
April 23 » The Rhythm Club fire at a dance hall in Natchez, Mississippi, kills 198 people.
May 13 » Queen Wilhelmina of the Netherlands flees her country to Great Britain after the German invasion. Princess Juliana takes her children to Canada for their safety.
May 24 » Igor Sikorsky performs the first successful single-rotor helicopter flight.
June 10 » World War II: U.S. President Franklin D. Roosevelt denounces Italy's actions in his "Stab in the Back" speech at the graduation ceremonies of the University of Virginia.
June 18 » Appeal of 18 June by Charles de Gaulle.
November 27 » World War II: At the Battle of Cape Spartivento, the Royal Navy engages the Regia Marina in the Mediterranean Sea.
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/I133727.php : accessed October 25, 2026), "Eerde Boonstra (1912-)".
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