The temperature on July 15, 1969 was between 12.0 °C and 26.8 °C and averaged 20.2 °C. There was 14.7 hours of sunshine (90%). The average windspeed was 2 Bft (weak wind) and was prevailing from the east-southeast. Source: KNMI
April 22 » The formation of the Communist Party of India (Marxist-Leninist) is announced at a mass rally in Calcutta.
June 23 » Warren E. Burger is sworn in as Chief Justice of the United States Supreme Court by retiring Chief Justice Earl Warren.
November 15 » Vietnam War: In Washington, D.C., 250,000-500,000 protesters staged a peaceful demonstration against the war, including a symbolic "March Against Death".
November 24 » Apollo program: The Apollo 12 command module splashes down safely in the Pacific Ocean, ending the second manned mission to land on the Moon.
December 4 » Black Panther Party members Fred Hampton and Mark Clark are shot and killed during a raid by 14 Chicago police officers.
December 8 » Olympic Airways Flight 954 strikes a mountain outside of Keratea, Greece, killing 90 people in the worst crash of a Douglas DC-6 in history.
When copying data from this family tree, please include a reference to the origin: Irene Jolanda van der Meulen, "Family tree Ype Ypes (waaronder van der Meulen)", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-ype-ypes/I5802.php : accessed January 24, 2026), "Petra Marianne Alberda (1969-)".
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