Which 1929 crash day is remembered as Black Tuesday?

The 1929 crash day remembered as Black Tuesday was 29 October 1929.

On Black Tuesday, waves of selling hit the New York Stock Exchange, and roughly 16 million shares changed hands, setting a trading-volume record that lasted for decades. Prices fell dramatically as investors tried to liquidate holdings, often after buying shares with borrowed money. The session followed Black Thursday on 24 October and Black Monday on 28 October.

Black Tuesday is often treated as the single date of the Wall Street Crash, but the crash was a sequence of turbulent sessions. The resulting economic damage cannot be explained by that day alone: debt, banking problems, falling demand and international financial pressures also shaped the Great Depression. The date is sometimes mixed up with Black Monday, which occurred one trading day earlier. Together, the named sessions became shorthand for the collapse of the late-1920s stock-market boom.