The temperature on April 1, 1884 was about 10.9 °C. The air pressure was 2 kgf/m2 and came mainly from the south-southeast. The airpressure was 76 cm mercury. The atmospheric humidity was 71%. Source: KNMI
In The Netherlands , there was from April 23, 1884 to April 21, 1888 the cabinet Heemskerk, with Mr. J. Heemskerk Azn. (conservatief) as prime minister.
January 4 » The Fabian Society is founded in London, United Kingdom.
February 19 » More than sixty tornadoes strike the Southern United States, one of the largest tornado outbreaks in U.S. history.
April 20 » Pope Leo XIII publishes the encyclical Humanum genus.
June 16 » The first purpose-built roller coaster, LaMarcus Adna Thompson's "Switchback Railway", opens in New York's Coney Island amusement park.
October 22 » The International Meridian Conference designates the Royal Observatory, Greenwich as the world's prime meridian.
December 6 » The Washington Monument in Washington, D.C., is completed.
Day of death September 21, 1973
The temperature on September 21, 1973 was between 11.9 °C and 16.1 °C and averaged 13.4 °C. There was 21.3 mm of rain during 7.5 hours. There was 1.0 hours of sunshine (8%). The almost completely overcast was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the southwest. Source: KNMI
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.
In The Netherlands , there was from Friday, May 11, 1973 to Monday, December 19, 1977 the cabinet Den Uyl, with Drs. J.M. den Uyl (PvdA) as prime minister.
May 3 » The 108-story Sears Tower in Chicago is topped out at 1,451 feet as the world's tallest building.
May 29 » Tom Bradley is elected the first black mayor of Los Angeles, California.
July 11 » Varig Flight 820 crashes near Paris, France on approach to Orly Airport, killing 123 of the 134 on board. In response, the FAA bans smoking in airplane lavatories.
October 6 » Egypt and Syria launch coordinated attacks against Israel, beginning the Yom Kippur War.
October 21 » Fred Dryer of the Los Angeles Rams becomes the first player in NFL history to score two safeties in the same game.
November 7 » The United States Congress overrides President Richard M. Nixon's veto of the War Powers Resolution, which limits presidential power to wage war without congressional approval.
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/I967.php : accessed February 16, 2026), "Harm Boertien (1884-1973)".
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