January 2 » American statesman and diplomat John Hay announces the Open Door Policy to promote trade with China.
February 23 » Second Boer War: During the Battle of the Tugela Heights, the first British attempt to take Hart's Hill fails.
March 7 » The German liner SSKaiser Wilhelm der Grosse becomes the first ship to send wireless signals to shore.
June 21 » Boxer Rebellion. China formally declares war on the United States, Britain, Germany, France and Japan, as an edict issued from the Empress Dowager Cixi.
July 19 » The first line of the Paris Métro opens for operation.
October 19 » Max Planck discovers Planck's law of black-body radiation.
Day of death October 11, 1967
The temperature on October 11, 1967 was between 10.7 °C and 16.1 °C and averaged 13.9 °C. There was 0.1 mm of rain during 0.7 hours. There was 0.2 hours of sunshine (2%). The heavily clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the south-southwest. Source: KNMI
March 9 » Trans World Airlines Flight 553 crashes in a field in Concord Township, Ohio following a mid-air collision with a Beechcraft Baron, killing 26 people.
September 11 » China's People's Liberation Army (PLA) launched an attack on Indian posts at Nathu La, Sikkim, India, which resulted a military clashes.
October 18 » The Soviet probe Venera 4 reaches Venus and becomes the first spacecraft to measure the atmosphere of another planet.
October 26 » Mohammad Reza Pahlavi crowns himself Emperor of Iran.
December 3 » At Groote Schuur Hospital in Cape Town, South Africa, a transplant team headed by Christiaan Barnard carries out the first heart transplant on a human (53-year-old Louis Washkansky).
December 21 » Louis Washkansky, the first man to undergo a human-to-human heart transplant, dies in Cape Town, South Africa, having lived for 18 days after the transplant.
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/I170290.php : accessed October 13, 2026), "Ietje Boorsma (1900-1967)".
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