The temperature on May 10, 1927 was between 4.7 °C and 10.5 °C and averaged 7.9 °C. There was 1.5 hours of sunshine (10%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the north. Source: KNMI
February 23 » German theoretical physicist Werner Heisenberg writes a letter to fellow physicist Wolfgang Pauli, in which he describes his uncertainty principle for the first time.
February 23 » U.S. President Calvin Coolidge signs a bill by Congress establishing the Federal Radio Commission (later replaced by the Federal Communications Commission) which was to regulate the use of radio frequencies in the United States.
July 23 » The first station of the Indian Broadcasting Company goes on the air in Bombay.
August 7 » The Peace Bridge opens between Fort Erie, Ontario and Buffalo, New York.
October 6 » Opening of The Jazz Singer, the first prominent "talkie" movie.
December 8 » The Brookings Institution, one of the United States' oldest think tanks, is founded through the merger of three organizations that had been created by philanthropist Robert S. Brookings.
Day of death February 22, 1972
The temperature on February 22, 1972 was between 2.6 °C and 9.3 °C and averaged 5.4 °C. There was 2.0 mm of rain during 3.6 hours. There was 2.8 hours of sunshine (27%). The partly clouded was. The average windspeed was 1 Bft (weak wind) and was prevailing from the northeast. Source: KNMI
In The Netherlands , there was from April 5, 1967 to Tuesday, July 6, 1971 the cabinet Biesheuvel I, with Mr. B.W. Biesheuvel (ARP) as prime minister.
In The Netherlands , there was from Thursday, July 20, 1972 to Friday, May 11, 1973 the cabinet Biesheuvel II, with Mr. B.W. Biesheuvel (ARP) as prime minister.
April 10 » Vietnam War: For the first time since November 1967, American B-52 bombers reportedly begin bombing North Vietnam.
April 22 » Increased American bombing in Vietnam prompts anti-war protests in Los Angeles, New York City, and San Francisco.
May 5 » Alitalia Flight 112 crashes into Mount Longa near Palermo, Sicily, killing all 115 aboard, making it the deadliest single-aircraft disaster in Italy.
May 8 » Vietnam War: U.S. President Richard Nixon announces his order to place naval mines in major North Vietnamese ports in order to stem the flow of weapons and other goods to that nation.
June 23 » Title IX of the United States Civil Rights Act of 1964 is amended to prohibit sexual discrimination to any educational program receiving federal funds.
September 21 » Philippine President Ferdinand Marcos begins authoritarian rule by declaring martial law.
When copying data from this family tree, please include a reference to the origin: Joop Klavers, "Family tree Klavers", database, Genealogy Online (https://www.genealogieonline.nl/stamboom_klavers/I310171.php : accessed February 20, 2026), "Geert Popken (1927-1972)".
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