WHAT HAPPENED ON 23. FEBRUARY
Want to find out what all happened on 23. February

Cuba leases Guantánamo Bay to the United States "in perpetuity". (23. February 1903)

Chicago, Illinois attorney Paul Harris and three other businessmen meet for lunch to form the Rotary Club, the world's first service club. (23. February 1905)

The AEA Silver Dart makes the first powered flight in Canada and the British Empire. (23. February 1909)

First demonstrations in Saint Petersburg, Russia. The beginning of the February Revolution. (23. February 1917)

Last monarch of Mecklenburg-Strelitz commits suicide. (23. February 1918)

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. (23. February 1927)

German theoretical physicist Werner Heisenberg writes a letter to fellow physicist Wolfgang Pauli, in which he describes his uncertainty principle for the first time. (23. February 1927)

Leopold III becomes King of Belgium. (23. February 1934)

Plutonium is first produced and isolated by Dr. Glenn T. Seaborg. (23. February 1941)

World War II: Japanese submarines fire artillery shells at the California coastline near Santa Barbara. (23. February 1942)

A fire breaks out at St. Joseph's Orphanage, County Cavan, Ireland, killing 36 people (35 of whom are children). (23. February 1943)

Greek Resistance: The United Panhellenic Organization of Youth is founded is Greece. (23. February 1943)

The Soviet Union begins the forced deportation of the Chechen and Ingush people from the North Caucasus to Central Asia. (23. February 1944)

World War II: During the Battle of Iwo Jima, a group of United States Marines and a commonly forgotten U.S. Navy Corpsman, reach the top of Mount Suribachi on the island and are photographed raising the American flag. (23. February 1945)

World War II: The 11th Airborne Division, with Filipino guerrillas, free the captives of the Los Baños internment camp. (23. February 1945)

World War II: The capital of the Philippines, Manila, is liberated by combined Filipino and American forces. (23. February 1945)

World War II: Capitulation of German garrison in Poznań. The city is liberated by Soviet and Polish forces. (23. February 1945)

World War II: The German town of Pforzheim is annihilated in a raid by 379 British bombers. (23. February 1945)

The International Organization for Standardization (ISO) is founded. (23. February 1947)

The first mass inoculation of children against polio with the Salk vaccine begins in Pittsburgh. (23. February 1954)