February 14 » Voting machines are approved by the U.S. Congress for use in federal elections.
February 22 » Filipino forces led by General Antonio Luna launch counterattacks for the first time against the American forces during the Philippine–American War. The Filipinos fail to regain Manila from the Americans.
March 4 » Cyclone Mahina sweeps in north of Cooktown, Queensland, with a 12 metres (39ft) wave that reaches up to 5 kilometres (3.1mi) inland, killing over 300.
March 30 » German Society of Chemistry issues an invitation to other national scientific organizations to appoint delegates to the International Committee on Atomic Weights.
April 18 » The St. Andrew's Ambulance Association is granted a royal charter by Queen Victoria.
July 29 » The First Hague Convention is signed.
Day of death May 21, 1961
The temperature on May 21, 1961 was between 7.3 °C and 14.2 °C and averaged 10.7 °C. There was 5.5 hours of sunshine (34%). The partly clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the north. Source: KNMI
January 3 » The SL-1 nuclear reactor is destroyed by a steam explosion in the only reactor incident in the United States to cause immediate fatalities.
January 8 » In France a referendum supports Charles de Gaulle's policies in Algeria.
February 4 » The Angolan War of Independence and the greater Portuguese Colonial War begin.
February 13 » An allegedly 500,000-year-old rock is discovered near Olancha, California, US, that appears to anachronistically encase a spark plug.
September 1 » The first conference of the Non-Aligned Countries is held in Belgrade, Yugoslavia.
October 1 » East and West Cameroon merge to form the Federal Republic of Cameroon.
When copying data from this family tree, please include a reference to the origin: Marina Bock, "Family tree Bock", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-bock/I194.php : accessed January 29, 2026), "Gerardus marinus Baardmans (1899-1961)".
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