January 28 » The Carnegie Institution of Washington is founded in Washington, D.C. with a $10 million gift from Andrew Carnegie.
March 18 » Macario Sakay issues Presidential Order No. 1 of his Tagalog Republic.
April 20 » Pierre and Marie Curie refine radium chloride.
November 21 » The Philadelphia Football Athletics defeated the Kanaweola Athletic Club of Elmira, New York, 39–0, in the first ever professional American football night game.
November 29 » The Pittsburgh Stars defeated the Philadelphia Athletics, 11–0 to win the first championship associated with an American national professional football league.
December 10 » The opening of the reservoir of the Aswan Dam in Egypt.
Day of death July 27, 1981
The temperature on July 27, 1981 was between 11.6 °C and 20.9 °C and averaged 16.1 °C. There was 14.9 hours of sunshine (94%). The partly clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the northwest. Source: KNMI
In The Netherlands , there was from Monday, December 19, 1977 to Friday, September 11, 1981 the cabinet Van Agt I, with Mr. A.A.M. van Agt (CDA/KVP) as prime minister.
In The Netherlands , there was from Friday, September 11, 1981 to Saturday, May 29, 1982 the cabinet Van Agt II, with Mr. A.A.M. van Agt (CDA) as prime minister.
January 8 » A local farmer reports a UFO sighting in Trans-en-Provence, France, claimed to be "perhaps the most completely and carefully documented sighting of all time".
February 13 » A series of sewer explosions destroys more than two miles of streets in Louisville, Kentucky.
April 14 » STS-1: The first operational Space Shuttle, Columbia completes its first test flight.
April 25 » More than 100 workers are exposed to radiation during repairs of at the Tsuruga Nuclear Power Plant in Japan.
May 21 » The Italian government releases the membership list of Propaganda Due, an illegal pseudo-Masonic lodge that was implicated in numerous Italian crimes and mysteries.
December 14 » Arab–Israeli conflict: Israel's Knesset ratifies the Golan Heights Law, extending Israeli law to the occupied Golan Heights.
When copying data from this family tree, please include a reference to the origin: Peeters Mathieu, "FutureHistory", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-riske/I28413.php : accessed February 9, 2026), "Hendrik Maria Valkaert (1902-1981)".
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