September 28 brings together crossings, arrivals, and abrupt endings. In 1066, William the Conqueror’s Norman fleet landed in England, beginning the Norman Conquest—a military arrival that would reshape the country. Centuries later, in 1924, two U.S. Army planes completed the first circumnavigation of the globe by airplane, turning a journey around the world into a milestone in exploration. That same year also saw the birth of Marcello Mastroianni, whose performances in films such as *La Dolce Vita* and *8½* made him an enduring face of Italian cinema.
The date’s other story is one of striking brevity: Pope John Paul I died in 1978, only 33 days after his election. Set beside the long reach of a conquest and the vast distance of an aerial circumnavigation, his short papacy underscores how differently time can unfold in history. The list also reflects September’s threshold quality in the Northern Hemisphere: as summer gives way to autumn, its events range from consequential beginnings to sudden conclusions. Across them, the recurring theme is change—through movement across borders, journeys around the globe, artistic lives, and leadership cut unexpectedly short.