May 11: Holidays, Historical Events, Famous Birthdays & Zodiac Sign
On May 11, 1997, a supercomputer named Deep Blue defeated world chess champion Garry Kasparov, marking the first time a machine bested a reigning champion in a classical match.
About May 11
May 11 brims with pivotal moments that reshaped civilizations. In the year 330, Emperor Constantine the Great formally rededicated the rebuilt city of Byzantium as Constantinople, elevating it to the new capital of the Roman Empire. More than five centuries later, in 868, a printed copy of the Diamond Sūtra rolled off the presses in China — the earliest dated printed book known to humanity.
Centuries of royal tradition also anchor this date. In 973, Edgar the Peaceful became the first English monarch to undergo a formal coronation ceremony, while his wife Ælfthryth received the first recorded coronation of an English queen. The year 1812 brought a darker chapter in British politics when Prime Minister Spencer Perceval was fatally shot in the House of Commons lobby by John Bellingham — the only British PM ever assassinated. Meanwhile, explorers William Lawson, Gregory Blaxland, and William Wentworth crossed Australia's Blue Mountains in 1813, unlocking the continent's interior for settlement.
The modern era delivered its own landmarks. Minnesota joined the Union as the 32nd state in 1858. In 1997, IBM's chess-playing supercomputer Deep Blue defeated Garry Kasparov in the final game of their rematch, the first machine to topple a sitting world chess champion in a classical match. And in 2024, Nemo from Switzerland won the Eurovision Song Contest with "The Code," becoming the competition's first non-binary champion.
Fun & National Days on May 11
- Eat What You Want Day — Toss the diet rules and indulge in whatever craving has been calling your name — no guilt allowed.
- Hostess CupCake Day — Unwrap a squiggle-topped cream-filled classic and savor the iconic snack cake that defined American lunchboxes.
- National Mocha Torte Day — Celebrate with a slice of rich, coffee-infused layered cake that pairs chocolate and espresso in decadent harmony.
- National Twilight Zone Day — Queue up a Rod Serling marathon and enter a dimension of imagination where reality takes an unexpected turn.
- National Women's Check-Up Day — A timely nudge to book that long-postponed health screening — your future self will thank you.
- World Ego Awareness Day — Reflect on how unchecked ego shapes our relationships, workplaces, and world — a little self-awareness goes a long way.
On This Day in History
- 330 — Constantine the Great formally rededicated the rebuilt Byzantium as Constantinople, declaring it the new capital of the Roman Empire.
- 868 — A printed copy of the Diamond Sūtra was produced in China, recognized today as the earliest dated printed book known to exist.
- 973 — Edgar the Peaceful underwent the first coronation ceremony for an English monarch; his wife Ælfthryth became the first recorded crowned Queen of England.
- 1812 — Spencer Perceval became the only British Prime Minister ever assassinated, shot dead in the House of Commons lobby by John Bellingham.
- 1813 — William Lawson, Gregory Blaxland, and William Wentworth found a passage across Australia's Blue Mountains, opening the inland to settlers.
- 1858 — Minnesota was admitted as the 32nd state of the United States.
- 1973 — All charges against Daniel Ellsberg for leaking the Pentagon Papers were dismissed after a court cited government misconduct.
- 1987 — Nazi war criminal Klaus Barbie went on trial in Lyon, France, for atrocities committed during World War II.
- 1997 — IBM's supercomputer Deep Blue defeated world chess champion Garry Kasparov, the first machine to beat a reigning champion in a classical match.
- 1998 — India detonated three underground nuclear devices at Pokhran, drawing international condemnation and escalating regional tensions.
- 2010 — David Cameron became UK Prime Minister, leading Britain's first coalition government since the Second World War alongside the Liberal Democrats.
- 2024 — Switzerland's Nemo won the Eurovision Song Contest in Malmö with "The Code," becoming the event's first non-binary champion.
Famous Birthdays on May 11
- 1888 — Irving Berlin, Belarusian-American composer of "God Bless America" and "White Christmas" who shaped the Great American Songbook.
- 1894 — Martha Graham, American dancer and choreographer whose revolutionary technique transformed modern dance in the 20th century.
- 1904 — Salvador Dalí, Surrealist Spanish painter whose dreamlike, melting-clock imagery made him one of the 20th century's most recognizable artists.
- 1918 — Richard Feynman, Nobel Prize–winning American physicist, bongo player, and brilliantly unorthodox thinker who pioneered quantum electrodynamics.
- 1963 — Natasha Richardson, English actress of stage and screen, a Tony winner from the Redgrave theatrical dynasty whose life was cut tragically short.
- 1964 — Tim Blake Nelson, American character actor celebrated for scene-stealing roles in O Brother, Where Art Thou? and the Marvel Cinematic Universe.
- 1984 — Andrés Iniesta, Spanish midfield maestro who scored the 2010 World Cup–winning goal and starred for Barcelona across a glittering career.
- 1999 — Sabrina Carpenter, American singer and actress who rose from Disney Channel stardom to become a chart-topping pop sensation.