The temperature on May 10, 1967 was between 4.9 °C and 24.3 °C and averaged 16.2 °C. There was 13.2 hours of sunshine (86%). The almost cloudless was. The average windspeed was 2 Bft (weak wind) and was prevailing from the north-northeast. Source: KNMI
January 29 » The "ultimate high" of the hippie era, the Mantra-Rock Dance, takes place in San Francisco and features Janis Joplin, Grateful Dead, and Allen Ginsberg.
March 26 » Ten thousand people gather for one of many Central Park be-ins in New York City.
June 7 » Six-Day War: Israeli soldiers enter Jerusalem.
September 1 » The Khmer–Chinese Friendship Association is banned in Cambodia.
November 7 » Carl B. Stokes is elected as Mayor of Cleveland, Ohio, becoming the first African American mayor of a major American city.
December 13 » Constantine II of Greece attempts an unsuccessful counter-coup against the Regime of the Colonels.
Day of death December 14, 1970
The temperature on December 14, 1970 was between 0.8 °C and 7.8 °C and averaged 4.7 °C. There was 0.8 mm of rain during 0.6 hours. There was 1.0 hours of sunshine (13%). The partly or heavily clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the west-northwest. Source: KNMI
January 15 » Nigerian Civil War: Biafran rebels surrender following an unsuccessful 32-month fight for independence from Nigeria.
August 9 » LANSA Flight 502 crashes after takeoff from Alejandro Velasco Astete International Airport in Cusco, Peru, killing 99 of the 100 people on board, as well as two people on the ground.
September 4 » Salvador Allende is elected President of Chile.
September 11 » The Dawson's Field hijackers release 88 of their hostages. The remaining hostages, mostly Jews and Israeli citizens, are held until September 25.
November 12 » The Oregon Highway Division attempts to destroy a rotting beached Sperm whale with explosives, leading to the now infamous "exploding whale" incident.
November 13 » Bhola cyclone: A 150-mph tropical cyclone hits the densely populated Ganges Delta region of East Pakistan (now Bangladesh), killing an estimated 500,000 people in one night.
When copying data from this family tree, please include a reference to the origin: Hans Weening, "Family tree Weening", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-weening/I220291.php : accessed October 12, 2026), "Sikke Helder (1967-1970)".
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