The temperature on July 12, 1911 was between 12.2 °C and 22.7 °C and averaged 17.2 °C. There was 8.0 hours of sunshine (49%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the north. Source: KNMI
February 18 » The first official flight with airmail takes place from Allahabad, United Provinces, British India (now India), when Henri Pequet, a 23-year-old pilot, delivers 6,500 letters to Naini, about 10 kilometres (6.2mi) away.
May 23 » The New York Public Library is dedicated.
June 16 » IBM founded as the Computing-Tabulating-Recording Company in Endicott, New York.
July 24 » Hiram Bingham III re-discovers Machu Picchu, "the Lost City of the Incas".
September 23 » Pilot Earle Ovington makes the first official airmail delivery in America under the authority of the United States Post Office Department
November 1 » World's first combat aerial bombing mission takes place in Libya during the Italo-Turkish War. Second Lieutenant Giulio Gavotti of Italy drops several small bombs.
Day of marriage November 4, 1947
The temperature on November 4, 1947 was between 7.2 °C and 12.7 °C and averaged 9.2 °C. There was 1.8 mm of rain during 1.6 hours. There was 4.9 hours of sunshine (52%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the southwest. Source: KNMI
January 1 » The Canadian Citizenship Act 1946 comes into effect, converting British subjects into Canadian citizens. Prime Minister William Lyon Mackenzie King becomes the first Canadian citizen.
July 19 » Korean politician Lyuh Woon-hyung is assassinated.
August 14 » Pakistan gains Independence from the British Empire and joins the Commonwealth of Nations.
September 30 » Pakistan joins the United Nations.
October 5 » President Truman makes the first televised Oval Office address.
December 30 » Cold War: King Michael I of Romania is forced to abdicate by the Soviet Union-backed Communist government of Romania.
Day of death September 29, 1990
The temperature on September 29, 1990 was between 6.1 °C and 16.7 °C and averaged 12.5 °C. There was 5.9 mm of rain during 2.3 hours. There was 1.0 hours of sunshine (8%). The partly or heavily clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the south. Source: KNMI
In The Netherlands , there was from Tuesday, November 7, 1989 to Monday, August 22, 1994 the cabinet Lubbers III, with Drs. R.F.M. Lubbers (CDA) as prime minister.
January 20 » Protests in Azerbaijan, part of the Dissolution of the Soviet Union.
April 7 » Iran–Contra affair: John Poindexter is found guilty of five charges for his part in the scandal (the conviction is later reversed on appeal).
August 10 » The Magellan space probe reaches Venus.
September 9 » Batticaloa massacre: Massacre of 184 Tamil civilians by the Sri Lankan Army in Batticaloa District.
September 30 » The Dalai Lama unveils the Canadian Tribute to Human Rights in Canada's capital city of Ottawa.
December 23 » History of Slovenia: In a referendum, 88.5% of Slovenia's overall electorate vote for independence from Yugoslavia.
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The Family tree Doppenberg publication was prepared by Henk Doppenberg (contact is not possible).
When copying data from this family tree, please include a reference to the origin: Henk Doppenberg, "Family tree Doppenberg", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-doppenberg/I5125.php : accessed January 24, 2026), "Cornelis Heijndijk (1911-1990)".
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