Wikipedia:Selected anniversaries/December 8

December 8: Constitution Day in Romania (1991).

Pope Pius IX

• 1854 - Pope Pius IX (pictured) proclaimed the dogmatic definition of Immaculate Conception.

• 1941 - World War II: Takashi Sakai and the Imperial Japanese Army invaded Hong Kong and quickly achieved air superiority by bombing Kai Tak Airport.

• 1941 - The Holocaust: The Chełmno concentration camp in Poland, the first Nazi extermination camp to use poison gas, began operations.

• 1980 - Mark David Chapman fatally shot former Beatle John Lennon outside the Dakota apartments in New York City.

• 1991 - Leaders of Belarus, Russia and Ukraine met to dissolve the Soviet Union and establish the Commonwealth of Independent States.

Recent days: December 7 – December 6 – December 5

More anniversaries:

• November 30
• December 1
• December 2