The temperature on December 20, 1928 was between -0.6 °C and 1.9 °C and averaged 1.1 °C. There was 3.5 mm of rain. The average windspeed was 4 Bft (moderate breeze) and was prevailing from the south. Source: KNMI
March 12 » In California, the St. Francis Dam fails; the resulting floods kill 431 people.
April 14 » The Bremen, a German Junkers W 33 type aircraft, reaches Greenly Island, Canada - the first successful transatlantic aeroplane flight from east to west.
October 12 » An iron lung respirator is used for the first time at Children's Hospital, Boston.
November 22 » The premier performance of Ravel's Boléro takes place in Paris.
December 17 » Indian revolutionaries Bhagat Singh, Sukhdev Thapar and Shivaram Rajguru assassinate British police officer James Saunders in Lahore, Punjab, to avenge the death of Lala Lajpat Rai at the hands of the police. The three were executed in 1931.
Day of death March 15, 1930
The temperature on March 15, 1930 was between -0.6 °C and 9.0 °C and averaged 3.9 °C. There was 1.6 hours of sunshine (14%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the east. 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.
April 18 » The British Broadcasting Corporation announced that "there is no news" in their evening report.
April 22 » The United Kingdom, Japan and the United States sign the London Naval Treaty regulating submarine warfare and limiting shipbuilding.
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.
May 24 » Amy Johnson lands in Darwin, Northern Territory, becoming the first woman to fly solo from England to Australia (she left on May 5 for the 11,000 mile flight).
July 7 » Industrialist Henry J. Kaiser begins construction of Boulder Dam (now known as Hoover Dam).
September 17 » The Kurdish Ararat rebellion is suppressed by the Turks.
When copying data from this family tree, please include a reference to the origin: Ton Duker, "Family tree Duker", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-duker/R618.php : accessed March 1, 2026), "Hermanus Hubertus Roos (1928-1930)".
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