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Historical events & facts — July 31

What happened on July 31?

On July 31, 1971, *Apollo 15* astronauts *David Scott* and *James Irwin* drove the *first lunar roving vehicle* (LRV) across the Moon's surface near *Hadley Rille*. The electric rover allowed exploration of distances impossible on foot and transformed the scope of lunar surface science forever.
🚀1971

On July 31, 1971, Apollo 15 astronauts David Scott and James Irwin drove the first lunar roving vehicle (LRV) across the Moon's surface near Hadley Rille. The electric rover allowed exploration of distances impossible on foot and transformed the scope of lunar surface science forever.

On July 31, 1917, the *Battle of Passchendaele* began, also known as the *Third Battle of Ypres*, on the Western Front of World War I. Four months of fighting in the mud of Flanders left more than half a million casualties on both sides for a territorial advance of barely eight kilometres.
⚔1917

On July 31, 1917, the Battle of Passchendaele began, also known as the Third Battle of Ypres, on the Western Front of World War I. Four months of fighting in the mud of Flanders left more than half a million casualties on both sides for a territorial advance of barely eight kilometres.

On July 31, 2007, *J.K. Rowling* published *Harry Potter and the Deathly Hallows*, the seventh and final book in the series. In the first 24 hours, more than 11 million copies were sold in the UK and US alone, making it the fastest-selling fiction book in history at the time of its release.
📚2007

On July 31, 2007, J.K. Rowling published Harry Potter and the Deathly Hallows, the seventh and final book in the series. In the first 24 hours, more than 11 million copies were sold in the UK and US alone, making it the fastest-selling fiction book in history at the time of its release.

Notable birthdays — July 31

Famous people born on July 31

William S. Clark

William S. Clark

William Smith Clark was an American professor of chemistry, botany, and zoology; a colonel during the American Civil War; and a leader in agricultural education. Raised and schooled in Easthampton, Massachusetts, Clark spent most of his adult life in Amherst, Massachusetts.

Milton Friedman

Milton Friedman

Milton Friedman was an American economist and statistician who received the 1976 Nobel Memorial Prize in Economic Sciences for his research on consumption analysis, monetary history and theory and the complexity of stabilization policy.

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Frank Renouf

Sir Francis Henry Renouf was a New Zealand stockbroker and financier.

Hilary Putnam

Hilary Putnam

Hilary Whitehall Putnam was an American philosopher, mathematician, computer scientist, and figure in analytic philosophy in the second half of the 20th century. He contributed to the studies of philosophy of mind, philosophy of language, philosophy of mathematics, and philosophy of science. Outside philosophy, Putnam contributed to mathematics and computer science.

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João Barreiros

João Manuel Rosado Barreiros, also known by the pseudonym José de Barros, is a Portuguese science fiction writer, editor, translator and critic.

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