January 2 » American statesman and diplomat John Hay announces the Open Door Policy to promote trade with China.
January 16 » The United States Senate accepts the Anglo-German treaty of 1899 in which the United Kingdom renounces its claims to the Samoan islands.
April 30 » Hawaii becomes a territory of the United States, with Sanford B. Dole as governor.
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.
September 8 » Galveston hurricane: A powerful hurricane hits Galveston, Texas killing about 8,000 people.
Day of death May 22, 1970
The temperature on May 22, 1970 was between 3.6 °C and 11.7 °C and averaged 8.3 °C. There was 1.8 mm of rain during 0.8 hours. There was 7.3 hours of sunshine (46%). The partly clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the northwest. Source: KNMI
April 26 » The Convention Establishing the World Intellectual Property Organization enters into force.
May 1 » Vietnam War: Protests erupt following the announcement by Richard Nixon that the U.S. and South Vietnamese forces would attack Vietnamese communists in a Cambodian Campaign.
May 26 » The Soviet Tupolev Tu-144 becomes the first commercial transport to exceed Mach 2.
September 19 » Kostas Georgakis, a Greek student of geology, sets himself ablaze in Matteotti Square in Genoa, Italy, as a protest against the dictatorial regime of Georgios Papadopoulos.
October 10 » Canada's October Crisis escalates when Quebec's vice-premier is kidnapped by members of the FLQ.
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/I132159.php : accessed December 30, 2025), "Auke van der Werff (1900-1970)".
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