January 1 » New York, New York annexes land from surrounding counties, creating the City of Greater New York. The four initial boroughs, Manhattan, Brooklyn, Queens, and The Bronx, are joined on January 25 by Staten Island to create the modern city of five boroughs.
February 27 » King George I of Greece survives an assassination attempt.
March 16 » In Melbourne the representatives of five colonies adopted a constitution, which would become the basis of the Commonwealth of Australia.
August 23 » The Southern Cross Expedition, the first British venture of the Heroic Age of Antarctic Exploration, departs from London.
August 25 » Seven hundred Greek civilians, 17 British guards and the British Consul of Crete are killed by a Turkish mob in Heraklion, Greece.
October 18 » The United States takes possession of Puerto Rico from Spain.
Day of marriage September 29, 1926
The temperature on September 29, 1926 was between 4.6 °C and 15.8 °C and averaged 10.2 °C. There was 6.8 mm of rain. There was 4.1 hours of sunshine (35%). The average windspeed was 2 Bft (weak wind) and was prevailing from the west. Source: KNMI
March 14 » The El Virilla train accident, Costa Rica, kills 248 people and wounds another 93 when a train falls off a bridge over the Río Virilla between Heredia and Tibás.
April 24 » The Treaty of Berlin is signed. Germany and the Soviet Union each pledge neutrality in the event of an attack on the other by a third party for the next five years.
May 4 » The United Kingdom general strike begins.
May 12 » The Italian-built airship Norge becomes the first vessel to fly over the North Pole.
May 25 » Sholom Schwartzbard assassinates Symon Petliura, the head of the government of the Ukrainian People's Republic, which is in government-in-exile in Paris.
July 23 » Fox Film buys the patents of the Movietone sound system for recording sound onto film.
Day of death December 6, 1964
The temperature on December 6, 1964 was between 3.1 °C and 10.0 °C and averaged 7.5 °C. There was 1.1 mm of rain during 1.3 hours. The almost completely overcast was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the southwest. Source: KNMI
January 25 » Blue Ribbon Sports, which would later become Nike, is founded by University of Oregon track and field athletes.
July 19 » Vietnam War: At a rally in Saigon, South Vietnamese Prime Minister Nguyễn Khánh calls for expanding the war into North Vietnam.
July 31 » Ranger program: Ranger 7 sends back the first close-up photographs of the moon, with images 1,000 times clearer than anything ever seen from earth-bound telescopes.
August 4 » Civil rights movement: Civil rights workers Michael Schwerner, Andrew Goodman and James Chaney are found dead in Mississippi after disappearing on June 21.
September 25 » The Mozambican War of Independence against Portugal begins.
October 14 » Martin Luther King Jr. received the Nobel Peace Prize for combating racial inequality through nonviolence.
When copying data from this family tree, please include a reference to the origin: Hans Opperman, "Family tree Opperman", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-opperman/I2093.php : accessed January 25, 2026), "Wilhelmina Johanna Rijcken (1898-1964)".
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