The temperature on February 13, 1909 was between -7.3 °C and 1.6 °C and averaged -2.5 °C. There was 8.7 hours of sunshine (89%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the northeast. Source: KNMI
January 9 » Ernest Shackleton, leading the Nimrod Expedition to the South Pole, plants the British flag 97 nautical miles (180km; 112mi) from the South Pole, the farthest anyone had ever reached at that time.
January 28 » United States troops leave Cuba with the exception of Guantanamo Bay Naval Base after being there since the Spanish–American War.
February 12 » New Zealand's worst maritime disaster of the 20th century happens when the SSPenguin, an inter-island ferry, sinks and explodes at the entrance to Wellington Harbour.
February 12 » The National Association for the Advancement of Colored People (NAACP) is founded.
April 11 » The city of Tel Aviv is founded.
September 7 » Eugène Lefebvre crashes a new French-built Wright biplane during a test flight at Juvisy, south of Paris, becoming the first aviator in the world to lose his life in a powered heavier-than-air craft.
Day of marriage June 10, 1935
The temperature on June 10, 1935 was between 12.0 °C and 28.2 °C and averaged 18.6 °C. There was 20.2 mm of rain during 2.8 hours. There was 8.7 hours of sunshine (52%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the east-southeast. Source: KNMI
February 12 » USSMacon, one of the two largest helium-filled airships ever created, crashes into the Pacific Ocean off the coast of California and sinks.
February 26 » Robert Watson-Watt carries out a demonstration near Daventry which leads directly to the development of radar in the United Kingdom.
March 21 » Shah of Iran Reza Shah Pahlavi formally asks the international community to call Persia by its native name, Iran.
April 23 » The Polish Constitution of 1935 is adopted.
May 29 » First flight of the Messerschmitt Bf 109 fighter aeroplane.
September 30 » The Hoover Dam, astride the border between the U.S. states of Arizona and Nevada, is dedicated.
Day of death May 17, 1960
The temperature on May 17, 1960 was between 9.0 °C and 14.0 °C and averaged 11.3 °C. There was 0.5 mm of rain during 0.8 hours. There was 0.2 hours of sunshine (1%). The almost completely overcast was. The average windspeed was 2 Bft (weak wind) and was prevailing from the west-northwest. Source: KNMI
January 21 » Little Joe 1B, a Mercury spacecraft, lifts off from Wallops Island, Virginia with Miss Sam, a female rhesus monkey on board.
March 5 » Indonesian President Sukarno dismissed the Dewan Perwakilan Rakyat (DPR), 1955 democratically elected parliament, and replaced with DPR-GR, the parliament of his own selected members.
March 21 » Apartheid: Sharpeville massacre, South Africa: Police open fire on a group of black South African demonstrators, killing 69 and wounding 180.
April 8 » The Netherlands and West Germany sign an agreement to negotiate the return of German land annexed by the Dutch in return for 280million German marks as Wiedergutmachung.
June 20 » The Mali Federation gains independence from France (it later splits into Mali and Senegal).
December 17 » Troops loyal to Emperor Haile Selassie in Ethiopia crush the coup that began December 13, returning power to their leader upon his return from Brazil. Haile Selassie absolves his son of any guilt.
Day of burial May 20, 1960
The temperature on May 20, 1960 was between 9.3 °C and 17.0 °C and averaged 12.8 °C. There was 0.3 mm of rain during 1.0 hours. There was 4.3 hours of sunshine (27%). The partly clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the north. Source: KNMI
January 21 » Little Joe 1B, a Mercury spacecraft, lifts off from Wallops Island, Virginia with Miss Sam, a female rhesus monkey on board.
April 1 » The TIROS-1 satellite transmits the first television picture from space.
April 26 » Forced out by the April Revolution, President of South Korea Syngman Rhee resigns after 12 years of dictatorial rule.
July 11 » To Kill a Mockingbird by Harper Lee is first published, in the United States.
September 10 » At the Summer Olympics in Rome, Abebe Bikila becomes the first sub-Saharan African to win a gold medal, winning the marathon in bare feet.
November 9 » Robert McNamara is named president of Ford Motor Company, the first non-Ford to serve in that post. A month later, he resigned to join the administration of newly elected John F. Kennedy.
When copying data from this family tree, please include a reference to the origin: Hans van Ekelenburg, "Family tree Van Ekelenburg", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-van-ekelenburg/I2768.php : accessed January 19, 2026), "Wilhelmina Ida van Klaveren (1909-1960)".
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