January 30 » The first Anglo-Japanese Alliance is signed in London.
April 18 » The 7.5 Mw Guatemala earthquake shakes Guatemala with a maximum Mercalli intensity of VIII (Severe), killing between 800–2,000.
May 17 » Greek archaeologist Valerios Stais discovers the Antikythera mechanism, an ancient mechanical analog computer.
May 31 » Second Boer War: The Treaty of Vereeniging ends the war and ensures British control of South Africa.
July 17 » Willis Carrier creates the first air conditioner in Buffalo, New York.
August 22 » Theodore Roosevelt becomes the first President of the United States to make a public appearance in an automobile.
Day of death October 15, 1991
The temperature on October 15, 1991 was between 7.5 °C and 17.6 °C and averaged 11.4 °C. There was 2.2 hours of sunshine (20%). The partly clouded was. The average windspeed was 1 Bft (weak wind) and was prevailing from the west-northwest. 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 12 » Persian Gulf War: An act of the U.S. Congress authorizes the use of American military force to drive Iraq out of Kuwait.
March 15 » Cold War: The Treaty on the Final Settlement with Respect to Germany comes into effect, granting full sovereignty to the Federal Republic of Germany.
April 9 » Georgia declares independence from the Soviet Union.
April 29 » The 7.0 Mw Racha earthquake affects Georgia with a maximum MSK intensity of IX (Destructive), killing 270 people.
September 5 » The current international treaty defending indigenous peoples, Indigenous and Tribal Peoples Convention, 1989, comes into force.
December 26 » The Supreme Soviet of the Soviet Union meets and formally dissolves the Soviet Union, ending the Cold War.
When copying data from this family tree, please include a reference to the origin: J. Ham, "Family tree Ham", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-ham/I8189.php : accessed January 26, 2026), "Pieter Leendert de Visser (1902-1991)".
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