King Richard I of England — Richard the Lionheart, just back from captivity in Austria after the Third Crusade — grants the small port town of Portsmouth on the south coast its first royal charter. The town becomes a chartered borough with the right to hold an annual fair and weekly market. Six centuries later it will become the home of the Royal Navy, the launch point for everything from Henry VIII's flagship Mary Rose and Nelson's HMS Victory to the D-Day invasion fleet of June 1944. HMS Victory, the world's oldest commissioned warship, is still in dry dock there today. The city's motto, granted with the charter, is "Heaven's Light Our Guide."

Queen Anne Boleyn — second wife of King Henry VIII, the woman whose marriage triggered the English Reformation and the break with Rome — is arrested at Greenwich Palace on charges of adultery, incest with her brother George, and treason. She is rowed up the Thames and committed to the Tower of London. Most modern historians regard the charges as fabricated, the work of Thomas Cromwell. Her trial and execution follow within seventeen days; she is beheaded on the morning of May 19. Her daughter, the future Queen Elizabeth I, is two years and eight months old at the time of her mother's arrest.

Mary, Queen of Scots — held prisoner since being forced to abdicate the previous summer — escapes from Lochleven Castle, set on a small island in the middle of a Perthshire loch, with the help of the young Willie Douglas, who steals the keys at supper, locks the gates behind her, and rows her ashore. Within days she has raised an army of 6,000 men. Eleven days later she is defeated at the Battle of Langside and flees south across the Solway Firth into England, expecting protection from her cousin Elizabeth I. Instead Elizabeth holds her prisoner for nineteen years and, in 1587, has her beheaded.

King Charles II grants a royal charter to "The Governor and Company of Adventurers of England, trading into Hudson's Bay," led by his cousin Prince Rupert of the Rhine, who becomes the company's first governor. The charter gives the new company a trading monopoly over the entire watershed of Hudson Bay — a territory called Rupert's Land, eventually understood to cover roughly 3.9 million square kilometres, more than a third of modern Canada and an area larger than the entire subcontinent of India. For two centuries the HBC effectively governs that land. Founded in 1670, it operated continuously for 355 years before being liquidated in 2025. The charter required the company to give the Crown two elk skins and two black beaver pelts whenever the monarch visited Rupert's Land — a ceremony last carried out, in the form of two live beavers, with Queen Elizabeth II in 1970.

In Madrid, the people of the city rise against Napoleon's occupying French troops. Hundreds are killed in street fighting and in the brutal reprisal executions of the next morning, which Francisco Goya will paint two years later as The Third of May 1808 — one of the great images of war in the history of art. The Dos de Mayo (Second of May) uprising sets in motion the Peninsular War (1808–1814) and the wider Spanish War of Independence; the day is still observed in Madrid as the Community of Madrid's annual public holiday.

In the Wilderness woods of Virginia, at twilight on the second day of the Battle of Chancellorsville, the Confederate Lt. Gen. Thomas J. "Stonewall" Jackson — having just executed one of the most audacious flanking marches in military history, smashing the Union right — is riding back through the woods with his staff to scout the next move when his own North Carolina troops, jumpy in the dark, mistake the riders for Union cavalry and open fire. Jackson is hit three times. His left arm is amputated that night. He dies of pneumonia eight days later, on May 10. Robert E. Lee, on hearing the news of the amputation: "He has lost his left arm, but I have lost my right arm." Lee's subsequent invasion of Pennsylvania ends two months later at Gettysburg.

In Holyoke, Massachusetts, the publisher Clark W. Bryan brings out the first issue of Good Housekeeping, a fortnightly magazine "to produce and perpetuate perfection — or as near unto perfection as may be attained in the household." The magazine pioneers a research-driven approach to consumer products in its Good Housekeeping Institute, established in 1900, and creates the famous Good Housekeeping Seal of Approval — one of the earliest and most durable consumer-protection brands in American retail history. Now in its 140th year of continuous publication.

In one of the most extraordinary corporate manoeuvres in American business history, General Motors purchases the Chevrolet Motor Company. The architect is William C. "Billy" Durant — the man who had originally founded GM in 1908, lost control of it in 1910, then founded Chevrolet in 1911 specifically to use it as a vehicle to take GM back. He used Chevrolet stock to buy GM shares and engineered a reverse takeover. By the time of the May 1918 acquisition Durant was running both companies; Chevrolet was now a GM division. He would lose control of the merged company once and for all in 1920. Chevrolet has been a GM brand for more than a century.

In Indianapolis, the Negro National League — founded the previous winter at a YMCA in Kansas City by the great pitcher and impresario Andrew "Rube" Foster — plays its first official league game: the Indianapolis ABCs beat the Chicago American Giants 4–2. The NNL is the first stable, well-organised professional baseball league for Black Americans, and over the next quarter-century it will produce some of the greatest players ever to lace up a glove: Cool Papa Bell, Josh Gibson, Buck Leonard, Oscar Charleston, and a young pitcher named Leroy "Satchel" Paige. Their existence forces Major League Baseball, finally, to integrate. Jackie Robinson, who breaks the colour line for the Brooklyn Dodgers in April 1947, came from the Kansas City Monarchs.

In Rome, the International Astronomical Union — founded three years earlier in the wake of the Great War — opens its first General Assembly, running from May 2 to May 10. Among its first acts is to adopt the modern list of 88 constellations covering the entire sky, with three-letter Latin abbreviations devised by the American astronomer Henry Norris Russell. Most of the names — Orion, Leo, Scorpius, Cassiopeia — are inherited from Ptolemy and the ancient Greeks; the southern-hemisphere additions include the strange post-Renaissance creations Microscopium, Telescopium and Antlia (the air pump). Precise constellation boundaries, set by the Belgian astronomer Eugène Delporte, are adopted at the IAU's 1928 assembly. They are still the boundaries used by every astronomer today.

The US Supreme Court, by 8–1, upholds Virginia's compulsory sterilisation law in the case of Carrie Buck — a young woman whose institutional commitment was later shown to have been engineered to test the statute. Justice Oliver Wendell Holmes Jr., writing for the court, ends his short opinion with one of the most notorious sentences ever penned by an American judge. The decision provides legal cover for the sterilisation, against their will, of more than 60,000 Americans by the 1970s, mostly poor women, and was cited in defence at the post-war Nuremberg trials. The case has never been formally overturned, though Skinner v. Oklahoma (1942) substantially limited it.

The Inverness Courier of Scotland publishes a story by part-time correspondent Alex Campbell about a sighting on Loch Ness by a local couple, Aldie and John Mackay, of "an enormous animal rolling and plunging on the surface." Campbell's editor inserts the word "monster," and a global legend is born. Within months hundreds of "Nessie" sightings are reported; the famous "Surgeon's Photograph" of 1934 (now generally believed a hoax) cements the legend. Today Loch Ness — the largest body of fresh water in Britain by volume, deeper than the North Sea — draws hundreds of thousands of monster-hunting tourists a year. A 2019 environmental-DNA survey found no reptile DNA in the loch, but a great deal of eel DNA. Make of that what you will.

Before a Yankees–Tigers game at Briggs Stadium in Detroit, Yankees first baseman Lou Gehrig — "the Iron Horse," who has played in every Yankees game since June 1, 1925 — quietly tells manager Joe McCarthy that he is benching himself "for the good of the team," and walks the lineup card without his name on it out to the umpires. The Detroit announcer reads it out; the Tiger fans give him a standing ovation. The streak ends at 2,130 games. Two months later, on July 4, on Lou Gehrig Appreciation Day at Yankee Stadium, dying of the disease that would soon bear his name, he tells 62,000 fans: "Today, I consider myself the luckiest man on the face of the earth." The record stands for 56 years, until Cal Ripken Jr. of the Baltimore Orioles plays his 2,131st straight game on September 6, 1995.

Six inmates at the federal penitentiary on Alcatraz Island in San Francisco Bay overpower a guard, seize the gun cage and arm themselves, but cannot find the keys to the recreation yard. Their escape attempt collapses; they barricade themselves inside Cellhouse C. The two-day siege is so ferocious that US Marines from a nearby base are called in to fire mortars and grenades through the roof. By the time it is over, two officers and three inmates are dead. Two of the surviving ringleaders are later executed; the third, 19-year-old Clarence Carnes, has his sentence commuted because he refused to kill hostages. No inmate ever successfully escaped from Alcatraz; the prison closed in 1963.

A British BOAC de Havilland Comet 1, the G-ALYP, takes off from London Heathrow at the start of a 36-hour scheduled flight to Johannesburg via Rome, Beirut, Khartoum, Entebbe and Livingstone. With it the jet age of commercial passenger aviation begins — half the time of the propeller airliners of the day, at twice the altitude. Within two years, three Comets break up in mid-air, killing all aboard; investigators trace the failures to metal fatigue around the square window frames, and every airliner since has had rounded windows. The Comet itself is grounded and redesigned, and its lead is lost to the larger and stronger Boeing 707, which enters service in 1958.

The Pulitzer Prize for Drama is awarded to Tennessee Williams for Cat on a Hot Tin Roof — his second Pulitzer, after A Streetcar Named Desire (1948). The play, which had opened at the Morosco Theatre in March 1955 with Barbara Bel Geddes as Maggie, Ben Gazzara as Brick and Burl Ives as Big Daddy, also wins the New York Drama Critics' Circle Award for the season. Williams cables the cast: "Dear players: I want you to know that I know that you all gave me the prizes. All my love." The 1958 film adaptation, with Elizabeth Taylor as Maggie and Paul Newman as Brick, will earn six Academy Award nominations.

At the Sunshine Mine near Kellogg in Idaho's Silver Valley — at the time the most productive silver mine in the United States — a fire breaks out underground at about 11:40 a.m. Smoke and carbon monoxide spread through the mine's ventilation system before most miners can be evacuated; the operator of the No. 10 Shaft hoist dies at his post, cutting off the principal escape route. Of 173 men below ground, 91 die of carbon-monoxide poisoning. Two miners, Tom Wilkinson and Ron Flory, are found alive on the 4,800-foot level after seven days underground. The disaster prompts the Federal Mine Safety and Health Act of 1977, the founding charter of the modern Mine Safety and Health Administration (MSHA).

The longtime Director of the Federal Bureau of Investigation, J. Edgar Hoover, dies of a heart attack at his home in Washington, DC at 77. He had run the FBI — and before it the old Bureau of Investigation — since 1924, almost 48 years, across eight presidents from Calvin Coolidge to Richard Nixon. He built the modern Bureau, the FBI Academy, the National Crime Information Center; he also abused that power on a scale only fully revealed after his death, with the COINTELPRO surveillance and harassment of Martin Luther King Jr., the Black Panthers, anti-war activists and many others. After Hoover, Congress capped the FBI Director's term at a single ten-year appointment, partly to make sure no one would accumulate that kind of power again.

From the Greenpeace mooring on the Thames at London, the converted North Sea trawler Rainbow Warrior — bought by the young environmental group for £40,000 — sets out on her maiden voyage as Greenpeace's flagship, on a global campaign against whaling, seal hunting and the dumping of nuclear and toxic waste at sea. Her exploits over the next seven years, from blockading whaling ships off Iceland to evacuating the people of Rongelap atoll from US nuclear-test fallout, will make her the most famous environmental ship in the world. On July 10, 1985, she will be sunk in Auckland harbour by limpet mines planted by French intelligence agents — an attack that kills photographer Fernando Pereira and ends up galvanising the very movement it was meant to stop.

In the South Atlantic, outside the British-declared Total Exclusion Zone but on a course Royal Navy commanders judged threatening to the Falklands task force, the British nuclear-powered submarine HMS Conqueror torpedoes the Argentine light cruiser ARA General Belgrano. Two of three Mark 8 torpedoes strike home; the Belgrano sinks in less than an hour with the loss of 323 of her 1,138 sailors — about half the total Argentine war dead. It is the only sinking of a major surface warship by a nuclear-powered submarine in combat in history. After the sinking, the Argentine surface navy effectively returns to port and remains there for the rest of the war.

On the Hungarian–Austrian border near the village of Hegyeshalom, Hungarian border guards begin cutting and rolling up the electrified barbed-wire fence that has divided communist Hungary from neutral Austria — and the Warsaw Pact from the West — since the early 1950s. The decision is made by the reformist Hungarian government of Miklós Németh. By the summer thousands of East German "tourists" are pouring across into Austria; in November the Berlin Wall falls; by the end of 1991 the Soviet Union itself is gone. The single image of Hungarian soldiers casually clipping wire on May 2, 1989, is one of the great quiet beginnings of the end of the Cold War.

In Brussels, the heads of state and government of the eleven European Union countries that have qualified to join the new common currency — Austria, Belgium, Finland, France, Germany, Ireland, Italy, Luxembourg, Netherlands, Portugal and Spain — agree to launch the European Central Bank as the eurozone's monetary authority, with headquarters at Frankfurt-am-Main. The first president is the Dutch banker Wim Duisenberg. The euro itself is introduced as an electronic currency on January 1, 1999, and as physical notes and coins on January 1, 2002 — the largest currency changeover in history. The ECB now sets interest rates for around 350 million people in 20 countries.

At midnight, on the orders of President Bill Clinton, the US Department of Defense switches off Selective Availability — the program that for 17 years had deliberately degraded the accuracy of civilian Global Positioning System signals from a few metres down to about 100 metres, for national-security reasons. Civilian GPS accuracy improves overnight from roughly 100 metres to roughly 10 to 20 metres. Almost the entire modern location-based economy — turn-by-turn driving directions, ride-hailing apps, Google Maps, geotagged photos, Pokémon Go, smartphone fitness tracking, precision agriculture — is built on what happened that night.

Marvel Studios' The Avengers — directed and co-written by Joss Whedon and bringing together Iron Man (Robert Downey Jr.), Captain America (Chris Evans), Thor (Chris Hemsworth), the Hulk (Mark Ruffalo), Black Widow (Scarlett Johansson) and Hawkeye (Jeremy Renner) for the first time on screen — opens in the United Kingdom; the United States release follows on May 4. The film grosses $1.5 billion worldwide and at the time of its release becomes the third-highest-grossing film in cinema history. It also cements the Marvel Cinematic Universe model — interconnected blockbusters all building toward a single ensemble payoff — that will dominate the box office for the next decade.

At 8:34 a.m., in the Lindo Wing of St Mary's Hospital in Paddington, London, Princess Charlotte Elizabeth Diana — daughter of Prince William, then Duke of Cambridge, and Catherine, then Duchess of Cambridge — is born, weighing 8 lb 3 oz. She is named, on May 4, in honour of her grandfather Charles, her great-grandmother Queen Elizabeth II, and her late grandmother Diana, Princess of Wales. She is the first British princess in history to outrank a younger brother in the line of succession — the result of the 2013 Succession to the Crown Act, which abolished male-preference primogeniture two years before her birth. Today she is fourth in line to the British throne, behind her father and elder brother Prince George and ahead of her younger brother Prince Louis.

Born Zhu Di, the third emperor of the Ming dynasty (reigned 1402–1424), one of the great rulers of imperial China. Moved the Chinese capital from Nanjing to Beijing and ordered the construction of the Forbidden City, still the largest preserved palace complex in the world. Commissioned the Yongle Encyclopedia (Yongle Dadian) of about 11,095 volumes — for nearly six centuries the largest encyclopedia in human history, until surpassed by Wikipedia in 2007 — and dispatched Admiral Zheng He on his seven extraordinary "treasure voyages" across the Indian Ocean, reaching India, Arabia, and East Africa with fleets larger than anything Europe could put to sea for another century.

Born Princess Sophie of Anhalt-Zerbst in Stettin, Prussia (now Szczecin, Poland), Catherine II ruled the Russian Empire from 1762 — when she overthrew her unstable husband Peter III with the help of the imperial guard — until her death in 1796. The longest-reigning female ruler in Russian history. Under her, Russia expanded south to the Black Sea, west into Poland, and east into Alaska; she founded the State Hermitage Museum, corresponded with Voltaire and Diderot, and gave Russia its first modern code of laws. Often (and contestably) credited as the most successful Russian monarch since Peter the Great.

German poet and philosopher Georg Philipp Friedrich Freiherr von Hardenberg, known by his pen name Novalis — one of the founders of early German Romanticism. Best known for the Hymns to the Night (1800), a meditation on death and longing written after the death of his teenage fiancée Sophie von Kühn, and for the unfinished mystical novel Heinrich von Ofterdingen, whose "blue flower" became the central symbol of European Romanticism. Died of tuberculosis in 1801, at 28.

Austro-Hungarian journalist, born in Pest (now part of Budapest), the founder of modern political Zionism. As Paris correspondent for the Vienna Neue Freie Presse he covered the Dreyfus affair of 1894–95 — the spectacle of a French Jewish officer being publicly degraded on a charge of treason later shown to be antisemitic forgery — and concluded that Jews would never be safe in Europe without a state of their own. His 1896 pamphlet Der Judenstaat (The Jewish State) and his convening of the First Zionist Congress in Basel in 1897 laid the political foundation for the eventual creation of the State of Israel in 1948. Herzl himself died in 1904 at 44.

German cavalry officer turned fighter pilot — Rittmeister Freiherr Manfred Albrecht von Richthofen — the highest-scoring fighter ace of the First World War, with 80 confirmed aerial victories over the Western Front between 1916 and 1918. Painted his Albatros and later Fokker triplane fighters bright red to make himself impossible to miss; the British called him der rote Kampfflieger, "the Red Battle Flyer," and his squadron was nicknamed "the Flying Circus." Killed in action over the Somme on April 21, 1918, at 25, by a single .303 bullet whose source — a Canadian pilot or an Australian ground gunner — has been argued over for more than a century.

American pediatrician whose 1946 book The Common Sense Book of Baby and Child Care became one of the bestselling books in publishing history — more than 50 million copies in 39 languages — and reshaped how postwar Western parents raised children, urging warmth, flexibility and trust in their own instincts where earlier authorities had urged strict schedules and emotional distance. Before he became the world's most famous pediatrician, Spock was an Olympic gold medallist: he rowed in the eight-man crew that won gold for Yale (and the United States) at the 1924 Paris Olympic Games.

Austrian-born American actor, folk singer and political activist. Created the role of Captain Georg von Trapp opposite Mary Martin in the original 1959 Broadway production of Rodgers and Hammerstein's The Sound of Music; played Tevye in Fiddler on the Roof more times than any other actor in history (over 2,000 performances). A founding board member of the Newport Folk Festival; a major force in introducing Israeli, Yiddish and Eastern European folk music to American audiences. Died in 2015 at 91.

Italian fashion designer, the younger sister and longtime muse of Gianni Versace. After Gianni's murder on the steps of his Miami Beach mansion on July 15, 1997, Donatella took over as chief designer and Vice President of the Versace Group, keeping the house at the centre of glamorous, rock-and-roll-inflected Italian high fashion. Friend of Madonna, Elton John, Lady Gaga; the woman who put Jennifer Lopez in the green Versace silk-jungle dress at the 2000 Grammy Awards (a moment that famously inspired the launch of Google Images, when Google realised that was what people most wanted to find).

American actor and former professional wrestler born in Hayward, California, into a wrestling family — his father Rocky Johnson and grandfather Peter Maivia were both WWE Hall of Famers. After a college football career at the University of Miami he joined the WWE as "The Rock" and became one of the biggest stars in wrestling history. Transitioned to Hollywood in the 2000s and has since become one of the highest-paid film stars on the planet, headlining the Fast & Furious franchise, Jumanji, Moana and Black Adam. Topped Forbes's list of the world's highest-paid actors multiple times.

English footballer born in Leytonstone, London — one of the most globally famous athletes of his generation. Manchester United's number 7 from 1992 to 2003, where he won six Premier League titles, two FA Cups and the 1999 UEFA Champions League as part of Sir Alex Ferguson's treble-winning side; later starred for Real Madrid, LA Galaxy, AC Milan and Paris Saint-Germain. Captain of England 1996–2000 (115 caps). Famed for his free kicks — the long-range strike against Greece in 2001 that took England to the World Cup is one of the most replayed goals in football history. Knighted in the King's 2025 New Year Honours; co-owner of Inter Miami CF, the Major League Soccer club he brought Lionel Messi to in 2023.

Canadian tennis player who, at 19, won the 2019 US Open singles title in a stunning straight-sets final over Serena Williams at Arthur Ashe Stadium — becoming the first Canadian, male or female, to win a Grand Slam singles title. The first player born in the 2000s to win a Grand Slam. WTA Newcomer of the Year 2018, WTA Player of the Year 2019. Order of Canada at age 19, the youngest woman ever to receive the honour.

German-born composer (Jakob Liebmann Beer) who became the dominant figure of Parisian grand opera in the mid-19th century. Operas such as Robert le diable (1831), Les Huguenots (1836), Le Prophète (1849) and L'Africaine (posthumous, 1865) were enormous successes across Europe; Meyerbeer was for several decades the most performed opera composer in the world. Wagner, who began his career in awe of him and ended it attacking him in the antisemitic essay "Jewishness in Music," owed Meyerbeer more than he ever admitted. Died in Paris; buried in Berlin.

American-born British politician — Nancy Witcher Langhorne Astor, Viscountess Astor — the first woman ever to take her seat in the British House of Commons, on December 1, 1919, as Conservative MP for Plymouth Sutton. (Constance Markievicz was technically elected first, in 1918, but as a Sinn Féin abstentionist never took her seat.) Held the seat for 26 years, until 1945. Famous for her sharp, sometimes shocking wit. Winston Churchill: "Nancy, if I were your husband, I'd drink that tea." Astor: "Winston, if you were my husband, I'd drink it." Died at her daughter's home in Lincolnshire at 84.

Soviet and Russian ballerina — Maya Mikhailovna Plisetskaya — widely held to be among the greatest classical dancers of the 20th century. Prima ballerina of the Bolshoi Ballet for more than three decades, she defined the role of Odette/Odile in Swan Lake for a generation of audiences (and danced it on stage past her sixtieth birthday). Survived the Stalinist arrests of both her parents in the 1930s; created roles for Maurice Béjart and choreographed her own ballets, including Anna Karenina (1972). Hero of Socialist Labour, Légion d'honneur, Praemium Imperiale. Died in Munich at 89.

English crime novelist Baroness Rendell of Babergh — one of the great masters of the modern psychological thriller. Author of more than sixty novels across five decades, including the long-running Inspector Wexford detective series (24 novels from 1964 to 2013) and a separate strand of darker, more psychologically dense crime novels written under the pen name Barbara Vine. Three-time winner of the Crime Writers' Association's Gold Dagger; CBE in 1996; life peerage in 1997. Died in London at 85.

An informal global fan observance, marking the anniversary of the Battle of Hogwarts in J. K. Rowling's Harry Potter and the Deathly Hallows. In the books, the climactic battle between the defenders of Hogwarts School of Witchcraft and Wizardry and Lord Voldemort's Death Eaters is fought through the night of May 1–2, 1998, ending with Voldemort's defeat in the early hours of May 2. Hogwarts students still leave little notes ("after all this time? — always") on Severus Snape's tributes around the world.

An American observance honouring the bond between siblings, traditionally said to have been founded by Claudia Evart of Madison, New Jersey, in 1998 in memory of her two siblings. Widely promoted by greeting-card companies and social media; not a federal holiday but increasingly recognised at the state level.