The temperature on March 8, 1911 was between -1.1 °C and 7.7 °C and averaged 3.0 °C. There was 3.2 hours of sunshine (28%). The average windspeed was 2 Bft (weak wind) and was prevailing from the northwest. Source: KNMI
January 3 » A gun battle in the East End of London left two dead and sparked a political row over the involvement of then-Home Secretary Winston Churchill.
April 29 » Tsinghua University, one of mainland China's leading universities, is founded.
May 19 » Parks Canada, the world's first national park service, is established as the Dominion Parks Branch under the Department of the Interior.
May 23 » The New York Public Library is dedicated.
May 31 » The RMS Titanic is launched in Belfast, Northern Ireland.
August 24 » Manuel de Arriaga is elected and sworn-in as the first President of Portugal.
Day of death April 15, 1975
The temperature on April 15, 1975 was between 6.3 °C and 10.8 °C and averaged 8.6 °C. There was 3.6 mm of rain during 4.3 hours. There was -0.1 hours of sunshine (0%). 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 Friday, May 11, 1973 to Monday, December 19, 1977 the cabinet Den Uyl, with Drs. J.M. den Uyl (PvdA) as prime minister.
February 21 » Watergate scandal: Former United States Attorney General John N. Mitchell and former White House aides H. R. Haldeman and John Ehrlichman are sentenced to prison.
August 14 » The Rocky Horror Picture Show, the longest-running release in film history, opens in London.
August 15 » Bangladeshi leader Sheikh Mujibur Rahman is killed along with most members of his family during a military coup.
August 20 » Viking program: NASA launches the Viking 1 planetary probe toward Mars.
August 23 » The Pontiac Silverdome opens in Pontiac, Michigan, 30 miles (48km) northwest of Detroit, Michigan
September 4 » The Sinai Interim Agreement relating to the Arab–Israeli conflict is signed.
When copying data from this family tree, please include a reference to the origin: Harry Westerman, "Family tree Westerman", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-westerman/X7942.php : accessed February 19, 2026), "Sieger Idema (1911-1975)".
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