Which date is known as Black Tuesday, when the 1929 Wall Street Crash reached its worst day?

Black Tuesday, the worst day of the 1929 Wall Street Crash, occurred on 29 October 1929.

On that Tuesday, investors traded millions of shares as panic selling intensified on the New York Stock Exchange. The Dow Jones Industrial Average fell about 12%, following sharp losses on Black Thursday and Black Monday. The collapse did not result from one single event: speculation, buying shares on margin, weakening industrial conditions, and falling consumer demand all contributed to the broader crisis.

The crash is often treated as the beginning of the Great Depression, but the economic downturn developed over several years and had multiple causes. Banks failed, international trade contracted, and unemployment rose dramatically after 1929.

A common mix-up is to call 24 October 1929 the crash itself; that date was Black Thursday, the first major panic day. Another is confusing the 1929 event with Black Monday on 19 October 1987.