The temperature on February 17, 1912 was between 4.7 °C and 13.7 °C and averaged 8.5 °C. There was 0.1 mm of rain. There was 4.6 hours of sunshine (46%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south-southeast. Source: KNMI
March 12 » The Girl Guides (later renamed the Girl Scouts of the USA) are founded in the United States.
August 14 » U.S. Marines invade Nicaragua to support the U.S.-backed government installed there after José Santos Zelaya had resigned three years earlier.
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.
November 7 » The Deutsche Opernhaus (now Deutsche Oper Berlin) opens in the Berlin neighborhood of Charlottenburg, with a production of Beethoven's Fidelio.
December 8 » Leaders of the German Empire hold an Imperial War Council to discuss the possibility that war might break out.
Day of marriage May 8, 1939
The temperature on May 8, 1939 was between 7.2 °C and 14.0 °C and averaged 11.0 °C. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the northeast. Source: KNMI
In The Netherlands , there was from June 24, 1937 to July 25, 1939 the cabinet Colijn IV, with Dr. H. Colijn (ARP) as prime minister.
In The Netherlands , there was from July 25, 1939 to August 10, 1939 the cabinet Colijn V, with Dr. H. Colijn (ARP) as prime minister.
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.
April 20 » Adolf Hitler's 50th birthday's celebrations in Germany
August 15 » The Wizard of Oz premieres at Grauman's Chinese Theater in Los Angeles, California.
September 1 » General George C. Marshall becomes Chief of Staff of the United States Army.
September 17 » World War II: The Soviet invasion of Poland begins.
September 28 » World War II: The siege of Warsaw comes to an end.
December 15 » Gone with the Wind (highest inflation adjusted grossing film) receives its premiere at Loew's Grand Theatre in Atlanta, Georgia, United States.
Day of death April 28, 1999
The temperature on April 28, 1999 was between 8.2 °C and 18.4 °C and averaged 12.4 °C. There was 11.8 hours of sunshine (80%). The partly clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the north-northeast. Source: KNMI
March 12 » Former Warsaw Pact members the Czech Republic, Hungary and Poland join NATO.
April 7 » The World Trade Organization rules in favor of the United States in its long-running trade dispute with the European Union over bananas.
April 14 » NATO mistakenly bombs a convoy of ethnic Albanian refugees. Yugoslav officials say 75 people were killed.
May 3 » The southwestern portion of Oklahoma City is devastated by an F5 tornado, killing forty-five people, injuring 665, and causing $1billion in damage. The tornado is one of 66 from the 1999 Oklahoma tornado outbreak. This tornado also produces the highest wind speed ever recorded, measured at 301 +/- 20mph (484 +/- 32km/h).
June 12 » Kosovo War: Operation Joint Guardian begins when a NATO-led United Nations peacekeeping force (KFor) enters the province of Kosovo in Federal Republic of Yugoslavia.
November 30 » Exxon and Mobil sign a US$73.7 billion agreement to merge, thus creating ExxonMobil, the world's largest company.
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/I121889.php : accessed October 25, 2026), "Roelf Datema (1912-1999)".
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