A cease-fire is agreed after almost eight years of the Iran–Iraq War.

First flight of the B-25 Mitchell bomber.

Helium is discovered by the French astronomer Pierre Jules César Janssen

An East German border guards shoots 18-year-old Peter Fechter as he crosses the Berlin Wall into West Berlin.

Battle of Cer begins during World War I

The Woodstock Music and Art Festival starts

Lech Wa??sa leads strikes at the Poland shipyards.

The Battle of Shanghai starts.

The personal computer is released by IBM

“We begin bombing in five minutes”; United States President Ronald Reagan jokes when preparing to make his weekly address on National Public Radio.