May 24 » Second Boer War: The United Kingdom annexes the Orange Free State.
May 29 » N'Djamena is founded as Fort-Lamy by the French commander Émile Gentil.
June 25 » The Taoist monk Wang Yuanlu discovers the Dunhuang manuscripts, a cache of ancient texts that are of great historical and religious significance, in the Mogao Caves of Dunhuang, China.
July 9 » The Governor of Shanxi province in North China orders the execution of 45 foreign Christian missionaries and local church members, including children.
August 3 » The Firestone Tire and Rubber Company is founded.
Day of death May 16, 1980
The temperature on May 16, 1980 was between 7.7 °C and 18.7 °C and averaged 13.6 °C. There was 9.9 hours of sunshine (63%). The partly or heavily clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the northeast. Source: KNMI
In The Netherlands , there was from Monday, December 19, 1977 to Friday, September 11, 1981 the cabinet Van Agt I, with Mr. A.A.M. van Agt (CDA/KVP) as prime minister.
March 18 » A Vostok-2M rocket at Plesetsk Cosmodrome Site 43 explodes during a fueling operation, killing 48 people.
March 23 » Archbishop Óscar Romero of El Salvador gives his famous speech appealing to men of the El Salvadoran armed forces to stop killing the Salvadorans.
May 13 » An F3 tornado hits Kalamazoo County, Michigan. President Jimmy Carter declares it a federal disaster area.
May 17 » General Chun Doo-hwan of South Korea seizes control of the government and declares martial law in order to suppress student demonstrations.
August 1 » Vigdís Finnbogadóttir is elected President of Iceland and becomes the world's first democratically elected female head of state.
September 18 » Soyuz 38 carries two cosmonauts (including one Cuban) to the Salyut 6 space station.
Day of cremation May 20, 1980
The temperature on May 20, 1980 was between 8.2 °C and 24.0 °C and averaged 15.8 °C. There was -0.1 mm of rain. There was 6.9 hours of sunshine (43%). The partly clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the northeast. Source: KNMI
In The Netherlands , there was from Monday, December 19, 1977 to Friday, September 11, 1981 the cabinet Van Agt I, with Mr. A.A.M. van Agt (CDA/KVP) as prime minister.
January 29 » The Rubik's Cube makes its international debut at the Ideal Toy Corp. in Earl's Court, London.
March 24 » El Salvadorian Archbishop Óscar Romero is assassinated while celebrating Mass in San Salvador.
June 3 » An explosive device is detonated at the Statue of Liberty. The FBI suspects Croatian nationalists.
July 7 » During the Lebanese Civil War, 83 Tiger militants are killed during what will be known as the Safra massacre.
August 26 » After John Birges plants a bomb at Harvey's Resort Hotel in Stateline, Nevada, in the United States, the FBI inadvertently detonates the bomb during its disarming.
September 18 » Soyuz 38 carries two cosmonauts (including one Cuban) to the Salyut 6 space station.
When copying data from this family tree, please include a reference to the origin: Louis Kramer, "Kramer Family Tree", database, Genealogy Online (https://www.genealogieonline.nl/kramer_stamboom/I507902.php : accessed January 9, 2026), "Johannes Jan de Jong (1900-1980)".
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