The temperature on April 14, 1911 was between -4.5 °C and 12.5 °C and averaged 5.1 °C. There was 0.1 mm of rain. There was 9.6 hours of sunshine (70%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west. Source: KNMI
April 27 » Following the resignation and death of William P. Frye, a compromise is reached to rotate the office of President pro tempore of the United States Senate.
July 7 » The United States, UK, Japan, and Russia sign the North Pacific Fur Seal Convention of 1911 banning open-water seal hunting, the first international treaty to address wildlife preservation issues.
August 29 » Ishi, considered the last Native American to make contact with European Americans, emerges from the wilderness of northeastern California.
October 5 » The Kowloon–Canton Railway commences service.
October 24 » Orville Wright remains in the air nine minutes and 45 seconds in a glider at Kill Devil Hills, North Carolina.
December 24 » Lackawanna Cut-Off railway line opens in New Jersey and Pennsylvania.
Day of marriage February 15, 1930
The temperature on February 15, 1930 was between -0.4 °C and 5.3 °C and averaged 2.6 °C. There was 2.9 mm of rain during 2.6 hours. 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, 1929 to May 26, 1933 the cabinet Ruys de Beerenbrouck III, with Jonkheer mr. Ch.J.M. Ruys de Beerenbrouck (RKSP) as prime minister.
May 1 » "Pluto" is officially proposed for the name of the newly-discovered dwarf planet Pluto by Vesto Slipher in the Lowell Observatory Observation Circular. The name quickly catches on.
May 7 » The 7.1 Mw Salmas earthquake shakes northwestern Iran and southeastern Turkey with a maximum Mercalli intensity of IX (Violent). Up to three-thousand people were killed.
August 16 » The first British Empire Games were opened in Hamilton, Ontario by the Governor General of Canada, the Viscount Willingdon.
August 16 » The first color sound cartoon, Fiddlesticks, is released by Ub Iwerks.
October 3 » The German Socialist Labour Party in Poland – Left is founded.
October 27 » Ratifications exchanged in London for the first London Naval Treaty go into effect immediately, further limiting the expensive naval arms race among its five signatories.
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/I79914.php : accessed October 6, 2026), "Wietske de Swart (1911-)".
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