What was the exact date of Black Tuesday in 1929?

Black Tuesday occurred on October 29, 1929.

The date marked one of the most dramatic selling days in the Wall Street crash of 1929. Investors traded roughly 16.4 million shares on the New York Stock Exchange, a record at the time, while about $14 billion in stock value disappeared. The Dow Jones Industrial Average fell 30.57 points, or 11.73%, after already suffering a major decline on Black Monday.

Black Tuesday followed Black Thursday, October 24, when a record 12.9 million shares changed hands, and Black Monday, October 28, when the Dow fell 12.82%. The sequence reflected forced selling, margin calls, collapsing confidence, and the difficulty of finding buyers at quoted prices. Attempts by financiers to support leading stocks could not halt the broader panic.

A common mix-up is to identify October 24 as Black Tuesday; that was Black Thursday. October 29 was not the sole cause of the Great Depression, but the crash damaged banks, businesses, and household wealth and became a major early event in the worldwide economic collapse.