February 21 » An Englishman raised in Australia, Bob Fitzsimmons, fought an Irishman, Peter Maher, in an American promoted event which technically took place in Mexico, winning the 1896 World Heavyweight Championship in boxing.
April 15 » Closing ceremony of the Games of the I Olympiad in Athens, Greece.
July 9 » William Jennings Bryan delivers his Cross of Gold speech advocating bimetallism at the 1896 Democratic National Convention in Chicago.
December 17 » Pittsburgh, Pennsylvania's Schenley Park Casino, which was the first multi-purpose arena with the technology to create an artificial ice surface in North America, is destroyed in a fire.
December 30 » Filipino patriot and reform advocate José Rizal is executed by a Spanish firing squad in Manila.
Day of death March 11, 1970
The temperature on March 11, 1970 was between -3.9 °C and 5.5 °C and averaged 1.0 °C. There was 0.1 mm of rain. There was 8.3 hours of sunshine (72%). The partly clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south-southeast. Source: KNMI
April 26 » The Convention Establishing the World Intellectual Property Organization enters into force.
July 3 » The Troubles: The "Falls Curfew" begins in Belfast, Northern Ireland.
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 12 » Vietnam War: Vietnamization continues as President Nixon announces that the United States will withdraw 40,000 more troops before Christmas.
December 2 » The United States Environmental Protection Agency begins operations.
When copying data from this family tree, please include a reference to the origin: Hans Opperman, "Family tree Opperman", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-opperman/I3391.php : accessed January 9, 2026), "Cornelis Nicolaas Slip (1896-1970)".
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