On September 27, 622, the prophet Muhammad completes his Hegira, or “flight,” from Mecca to Medina to escape persecution. In Medina, Muhammad set about building the followers of his religion—Islam—into an organized community and Arabian power. The Hegira would later mark the beginning (year 1) of the Muslim calendar.

Sudden and heavy fog causes two ships to collide, killing some 350 people off the coast of Newfoundland on September 27, 1854.

On September 27, 1915, Second Lieutenant John Kipling of the British army, the only son of Nobel Prize-winning author Rudyard Kipling, is killed at the Battle of Loos, in the Artois region of France.

On September 27, 1938, President Franklin Roosevelt writes to German Chancellor Adolf Hitler regarding the threat of war in Europe. The German chancellor had been threatening to invade the Sudetenland of Czechoslovakia and, in the letter, his second to Hitler in as many days, Roosevelt reiterated the need to find a peaceful resolution to the issue.

On September 27, 1940, the Axis powers are formed as Germany, Italy and Japan become allies with the signing of the Tripartite Pact in Berlin. The Pact provided for mutual assistance should any of the signatories suffer attack by any nation not already involved in the war. This formalizing of the alliance was aimed directly at “neutral” America—designed to force the United States to think twice before venturing in on the side of the Allies.

Rachel Carson’s watershed work Silent Spring is first published on September 27, 1962. Originally serialized in The New Yorker magazine, the book shed light on the damage that man-made pesticides inflict on the environment. Its publication is often viewed as the beginning of the modern environmentalist movement in America.

Hollywood socialite Zsa Zsa Gabor, on trial for slapping a police officer, storms out of the courtroom in the middle of the district attorney’s closing argument. The prosecutor told the jury that Gabor “craves media attention . . . and abused two weeks of this process for her own self-aggrandizement.” Although her attorney objected when the prosecutor said, “the defendant doesn’t know the meaning of truth,” Gabor was already running out in tears.