The temperature on February 22, 1961 was between 0.5 °C and 11.2 °C and averaged 5.0 °C. There was 8.1 hours of sunshine (78%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the east. Source: KNMI
March 29 » The Twenty-third Amendment to the United States Constitution is ratified, allowing residents of Washington, D.C., to vote in presidential elections.
March 30 » The Single Convention on Narcotic Drugs is signed in New York City.
May 19 » Venera program: Venera 1 becomes the first man-made object to fly by another planet by passing Venus (the probe had lost contact with Earth a month earlier and did not send back any data).
August 11 » The former Portuguese territories in India of Dadra and Nagar Haveli are merged to create the Union Territory Dadra and Nagar Haveli.
August 25 » President Jânio Quadros of Brazil resigns after just seven months in power, initiating a political crisis that culminates in a military coup in 1964.
September 16 » The United States National Hurricane Research Project drops eight cylinders of silver iodide into the eyewall of Hurricane Esther. Wind speed reduces by 10%, giving rise to Project Stormfury.
When copying data from this family tree, please include a reference to the origin: Jacques Vandenbemden, "Family tree Opdeweegh-Essers", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-opdeweegh-essers/I401.php : accessed May 24, 2024), "Mathy Vrolix (1961-)".
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