What Happened on September 28?

September 28 is Ask a Stupid Question Day — celebrating curiosity — on the same date Alexander Fleming discovered penicillin in 1928, William landed at Pevensey in 1066, and the Siege of Yorktown began in 1781.

• 1066 — William the Conqueror lands at Pevensey, England

  On September 28, 1066, William of Normandy landed at Pevensey and began the Norman Conquest of England. Read the full story →

• 1781 — The Siege of Yorktown begins

  On September 28, 1781, American and French forces began the siege that trapped British General Cornwallis at Yorktown. Read the full story →

• 1924 — U.S. Army pilots complete the first aerial circumnavigation

  On September 28, 1924, U.S. Army Air Service pilots finished the first flight around the world. Read the full story →

• 1928 — Alexander Fleming discovers penicillin

  On September 28, 1928, Alexander Fleming noticed mold killing bacteria in a petri dish — the discovery that led to penicillin. Read the full story →

• 1941 — Ted Williams finishes the season batting .406

  On September 28, 1941, Ted Williams went 6-for-8 in a doubleheader to end the year batting .406 — the last .400 MLB season. Read the full story →

Famous birthdays

Brigitte Bardot (1934) · Naomi Watts (1968) · Hilary Duff (1987) · Ben E. King (1938–2015)

Days & observances

Ask a Stupid Question Day · National Drink Beer Day · World Rabies Day · National Good Neighbor Day