The Polish government signed the Gdańsk Agreement with striking shipyard workers, legalizing independent trade unions and giving birth to the Solidarity movement.

Polish communist authorities signed the Gdańsk Agreement with striking shipyard workers, legalizing the independent trade union Solidarity led by Lech Wałęsa.

Polish workers and government officials finalized an agreement in Gdańsk that led to the registration of Solidarity, the Eastern Bloc's first independent trade union.

Ted Turner's Cable News Network began broadcasting the world's first 24-hour news channel from a converted Atlanta country club, changing how the world consumed news.

Mark David Chapman shot John Lennon four times outside his New York apartment building, killing the ex-Beatle at age 40.

Workers at a Depression-era construction site in New York first placed a small, undecorated evergreen at Rockefeller Center in 1931, beginning a beloved holiday tradition.