February 11 » Anton Bruckner's 9th Symphony receives its first performance in Vienna, Austria.
August 3 » Macedonian rebels in Kruševo proclaim the Kruševo Republic, which exists for only ten days before Ottoman Turks lay waste to the town.
August 18 » German engineer Karl Jatho allegedly flies his self-made, motored gliding airplane four months before the first flight of the Wright brothers.
November 3 » With the encouragement of the United States, Panama separates from Colombia.
November 18 » The Hay–Bunau-Varilla Treaty is signed by the United States and Panama, giving the United States exclusive rights over the Panama Canal Zone.
December 17 » The Wright brothers make the first controlled powered, heavier-than-air flight in the Wright Flyer at Kitty Hawk, North Carolina.
Day of death March 30, 1945
The temperature on March 30, 1945 was between 8.5 °C and 12.5 °C and averaged 10.4 °C. There was 1.0 mm of rain during 1.1 hours. There was 7.2 hours of sunshine (56%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the west-southwest. Source: KNMI
In The Netherlands , there was from July 27, 1941 to February 23, 1945 the cabinet Gerbrandy II, with Prof. dr. P.S. Gerbrandy (ARP) as prime minister.
In The Netherlands , there was from February 23, 1945 to June 24, 1945 the cabinet Gerbrandy III, with Prof. dr. P.S. Gerbrandy (ARP) as prime minister.
From June 24, 1945 till July 3, 1946 the Netherlands had a cabinet Schermerhorn - Drees with the prime ministers Prof. ir. W. Schermerhorn (VDB) and W. Drees (PvdA).
January 5 » The Soviet Union recognizes the new pro-Soviet Provisional Government of the Republic of Poland.
February 23 » World War II: During the Battle of Iwo Jima, a group of United States Marines reach the top of Mount Suribachi on the island and are photographed raising the American flag.
April 23 » World War II: Adolf Hitler's designated successor, Hermann Göring, sends him a telegram asking permission to take leadership of the Third Reich. Martin Bormann and Joseph Goebbels advise Hitler that the telegram is treasonous.
August 14 » Japan accepts the Allied terms of surrender in World War II and the Emperor records the Imperial Rescript on Surrender (August 15 in Japan Standard Time).
August 21 » Physicist Harry Daghlian is fatally irradiated in a criticality accident during an experiment with the Demon core at Los Alamos National Laboratory.
November 20 » Nuremberg trials: Trials against 24 Nazi war criminals start at the Palace of Justice at Nuremberg.
When copying data from this family tree, please include a reference to the origin: Hans Opperman, "Family tree Opperman", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-opperman/I3234.php : accessed February 4, 2026), "Jan Joseph de Boer (1903-1945)".
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