February 1 » Shinhan Bank, the oldest bank in South Korea, opens in Seoul.
July 11 » Salomon August Andrée leaves Spitsbergen to attempt to reach the North Pole by balloon. He later crashes and dies.
August 10 » German chemist Felix Hoffmann discovers an improved way of synthesizing acetylsalicylic acid (aspirin).
September 10 » Lattimer massacre: A sheriff's posse kills 19 unarmed striking immigrant miners in Lattimer, Pennsylvania, United States.
December 9 » Activist Marguerite Durand founds the feminist daily newspaper La Fronde in Paris.
December 30 » The British Colony of Natal annexes Zululand.
Day of death April 25, 1967
The temperature on April 25, 1967 was between -1.3 °C and 12.5 °C and averaged 7.2 °C. There was 13.2 hours of sunshine (91%). The almost cloudless was. The average windspeed was 2 Bft (weak wind) and was prevailing from the east. Source: KNMI
March 9 » Trans World Airlines Flight 553 crashes in a field in Concord Township, Ohio following a mid-air collision with a Beechcraft Baron, killing 26 people.
May 27 » Australians vote in favor of a constitutional referendum granting the Australian government the power to make laws to benefit Indigenous Australians and to count them in the national census.
July 6 » Nigerian Civil War: Nigerian forces invade Biafra, beginning the war.
September 3 » Dagen H in Sweden: Traffic changes from driving on the left to driving on the right overnight.
November 3 » Vietnam War: The Battle of Dak To begins.
November 14 » American physicist Theodore Maiman is given a patent for his ruby laser systems, the world's first laser.
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/I4214.php : accessed February 9, 2026), "Irma Maria van Herck (1897-1967)".
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