Today In History logo TIH

On this day

February 28

Watson and Crick Discover DNA's Structure: The Double Helix (1953). MASH Finale Watched by 106 Million: Most-Viewed TV Broadcast Ever (1983). Notable births include Linus Pauling (1901), Wolf Hirth (1900), Mario Andretti (1940).

Featured

Watson and Crick Discover DNA's Structure: The Double Helix
1953Event

Watson and Crick Discover DNA's Structure: The Double Helix

James Watson and Francis Crick unveiled a double-helix model of DNA based on Rosalind Franklin's X-ray diffraction data, instantly unlocking the mechanism for how life stores and replicates genetic information. This breakthrough birthed molecular biology by revealing that DNA bases pair in specific triplets, a discovery that allowed scientists to decipher the entire genetic code within just five years.

MASH Finale Watched by 106 Million: Most-Viewed TV Broadcast Ever
1983

MASH Finale Watched by 106 Million: Most-Viewed TV Broadcast Ever

The final episode of M*A*S*H aired to an estimated 106 to 125 million American viewers, securing its place as the most-watched television broadcast in history. This massive audience proved that a single narrative could unite a nation on a shared emotional level, setting a benchmark for cultural impact that no subsequent series finale has matched.

Cortés Executes the Last Aztec Emperor: Cuauhtémoc Dies in Chains
1525

Cortés Executes the Last Aztec Emperor: Cuauhtémoc Dies in Chains

Hernán Cortés's forces execute the last Aztec emperor, Cuauhtémoc, to crush any lingering hope of indigenous resistance. This brutal elimination shatters the final organized political structure of the Aztec Empire, ensuring Spanish dominance over Mexico for the next three centuries.

Liu Bang Crowned Emperor: The Han Dynasty Begins 400 Years of Rule
202 BC

Liu Bang Crowned Emperor: The Han Dynasty Begins 400 Years of Rule

Liu Bang crowned himself Emperor Gaozu at Luoyang, establishing a dynasty that would govern China for four centuries and define its cultural identity. This consolidation ended decades of chaotic warfare following the Qin collapse, creating a stable political framework that unified the empire under Confucian ideals and centralized administration.

Baltimore & Ohio Railroad Incorporated: America's First Railroad
1827

Baltimore & Ohio Railroad Incorporated: America's First Railroad

The Baltimore & Ohio Railroad got its charter on February 28, 1827. First in America to carry both passengers and freight for money. But here's what nobody expected: they had no idea what to power it with. Steam engines were unproven. So they tried horses on rails. Then they tried a sail-powered railcar — literally a cart with a mast. It worked until the wind died. They didn't switch to steam locomotives until 1830, and even then, half the board thought it was a fad. Within twenty years, there were 9,000 miles of track across America. The horse-and-sail railroad became the thing that killed the horse-and-sail economy.

Quote of the Day

“Satisfaction of one's curiosity is one of the greatest sources of happiness in life.”

Historical events

Daily Newsletter

Get today's history delivered every morning.

Free. No spam. Unsubscribe anytime.

Born on February 28

Portrait of Daniel Handler
Daniel Handler 1970

Daniel Handler was born in San Francisco in 1970.

Read more

He'd write thirteen books under a pen name he invented as a joke. Lemony Snicket started as a fake name Handler used to request information from right-wing organizations without getting on their mailing lists. When his editor asked what name to put on his children's book series, he said Lemony Snicket. The books sold 70 million copies. Handler still signs autographs as both himself and his fictional alter ego, depending on who's asking.

Portrait of Paul Krugman
Paul Krugman 1953

Paul Krugman won the Nobel Prize in Economics in 2008 for his work on trade theory and economic geography — explaining…

Read more

why similar countries trade similar goods, and why economic activity clusters in certain places. He'd also spent twenty years writing a New York Times column that made economics legible to non-economists, often infuriating other economists who felt he was too partisan. He was sometimes right about things years before the consensus caught up.

Portrait of Steven Chu
Steven Chu 1948

Steven Chu revolutionized atomic physics by developing methods to cool and trap atoms with laser light, a breakthrough…

Read more

that earned him the 1997 Nobel Prize. His mastery of laser manipulation later informed his tenure as U.S. Secretary of Energy, where he prioritized aggressive investment in renewable energy technologies and battery research to combat climate change.

Portrait of Brian Jones
Brian Jones 1942

Brian Jones founded The Rolling Stones and defined their early blues-infused sound with his multi-instrumental versatility.

Read more

His mastery of the sitar and slide guitar introduced exotic textures to rock music, pushing the band beyond their rhythm and blues roots. Though he struggled with the pressures of fame, his sonic experimentation remains the blueprint for the band's mid-sixties success.

Portrait of Mario Andretti
Mario Andretti 1940

Mario Andretti arrived in the United States from Italy as a refugee in 1955 and won the Daytona 500 in 1967, the…

Read more

Indianapolis 500 in 1969, and the Formula One World Championship in 1978 — the only driver ever to win all three. He was sixty-nine years old when he last raced competitively. The Associated Press named him Driver of the Century in 1999. His son Michael and grandsons Marco and Nico both raced professionally, which made family dinners at the Andrettis a very specific kind of conversation.

Portrait of Leon Cooper
Leon Cooper 1930

Leon Cooper revolutionized our understanding of superconductivity by identifying the mechanism that allows electrons to…

Read more

pair up and flow without resistance. His discovery of "Cooper pairs" earned him a Nobel Prize and provided the essential theoretical foundation for modern quantum mechanics, directly enabling the development of high-field superconducting magnets used in MRI machines today.

Portrait of Frank Gehry
Frank Gehry 1929

Frank Gehry spent years designing conventional buildings nobody talked about before the Guggenheim Bilbao opened in…

Read more

1997 and changed the conversation about what architecture could do. The titanium-clad curves looked like a ship crashing into a hill — nothing like any building that had existed before. Tourism in Bilbao increased 2,500 percent. Cities started commissioning landmark buildings specifically to produce that effect. The phenomenon was named after Gehry's building.

Portrait of Svetlana Alliluyeva
Svetlana Alliluyeva 1926

Svetlana Alliluyeva was born in Moscow in 1926.

Read more

Stalin's only daughter. He called her his "little sparrow." She was six when her mother shot herself. Stalin told her it was appendicitis. She didn't learn the truth for a decade. In 1967, she walked into the U.S. embassy in New Delhi and defected. She renounced her father publicly. She died in Wisconsin in 2011, having changed her name twice and moved countries five times, still trying to escape being Stalin's daughter.

Portrait of Harry H. Corbett
Harry H. Corbett 1925

Harry H.

Read more

Corbett mastered the art of the frustrated underdog, most famously as the long-suffering son in the sitcom Steptoe and Son. His performance redefined British television comedy by grounding slapstick in genuine, gritty class resentment. This portrayal influenced generations of actors who sought to bring authentic, working-class vulnerability to the small screen.

Portrait of Clara Petacci
Clara Petacci 1912

Clara Petacci met Mussolini when she was twenty.

Read more

She'd written him fan letters since she was seventeen. He was twenty-eight years older, married, and dictator of Italy. She left her husband for him. They were together for twelve years. In April 1945, partisan fighters caught them fleeing toward Switzerland. They shot Mussolini first. Then they shot her. She'd refused to leave him. The partisans hung both bodies upside down from meat hooks in a Milan gas station. Thousands came to spit on them and throw stones.

Portrait of Linus Pauling

Linus Pauling was subpoenaed by the Senate Internal Security Subcommittee in 1960 for his anti-nuclear activities, the…

Read more

same year he delivered a petition signed by 11,021 scientists to the United Nations calling for a nuclear test ban. He published No More War! in 1958. The Partial Test Ban Treaty was signed in 1963. He won the Nobel Peace Prize that year — his second Nobel Prize. The same government that had monitored him for a decade watched him accept it.

Died on February 28

Portrait of Ali Khamenei
Ali Khamenei 2026

Ali Khamenei became Supreme Leader of Iran in 1989, succeeding Khomeini, despite having no recognized religious…

Read more

credentials at the level the position theoretically required. His clerical rank was quietly elevated overnight. He's governed through presidents who came and went while he remained — reformists, hardliners, pragmatists — adjusting pressure and control but never relinquishing the levers. He turned eighty-six in 2026.

Portrait of George Kennedy
George Kennedy 2016

George Kennedy died on February 28, 2016, at 91.

Read more

He'd won an Oscar for *Cool Hand Luke* in 1967 — playing a chain gang enforcer who learns compassion from Paul Newman's defiant prisoner. But most people knew him from the *Naked Gun* movies, where he played Leslie Nielsen's perpetually bewildered police captain. Same guy, same gravelly voice, completely different tone. He appeared in over 200 films across six decades. He started as a technical advisor on military films because he'd actually served in World War II. The Academy Award winner became best known for getting hit in the face with a wedding cake.

Portrait of Donald A. Glaser
Donald A. Glaser 2013

Donald Glaser died in 2013 at 86.

Read more

He'd won the Nobel Prize in Physics at 34 for inventing the bubble chamber — a device that tracked subatomic particles by watching them leave trails of tiny bubbles in superheated liquid. He built the first one in his apartment using beer and ginger ale. After the Nobel, he switched fields entirely. Spent the next four decades doing neurobiology and molecular biology instead. Said physics had gotten boring. Most laureates spend their careers defending their one big idea. He walked away from his.

Portrait of Olof Palme
Olof Palme 1986

Olof Palme was shot twice in the back while walking home from a Stockholm cinema with his wife on February 28, 1986.

Read more

No bodyguards. He'd sent them home. He died on the pavement outside the Dekorima store on Sveavägen. The murder went unsolved for thirty-four years — witnesses, suspects, conspiracy theories, a series of failed prosecutions. In 2020, Swedish prosecutors announced the case closed, naming a man who had died in 2000 as the probable killer.

Portrait of Charles Nicolle
Charles Nicolle 1936

Charles Nicolle died on February 28, 1936.

Read more

He'd won the Nobel Prize for proving that body lice spread typhus — a disease that had killed more soldiers than bullets in most wars. He figured it out by watching hospital admissions in Tunisia. Patients arrived filthy and infectious. After they bathed and changed clothes, they stopped spreading the disease. The difference was the lice. His discovery saved millions during World War I. Armies started delousing stations at the front. But Nicolle himself died from complications of an illness he'd probably contracted in his own lab. He spent his life around infectious diseases. One finally got him.

Portrait of Friedrich Ebert
Friedrich Ebert 1925

Friedrich Ebert steered the Weimar Republic through its volatile infancy, stabilizing a fractured nation after the…

Read more

collapse of the German Empire. His death from septic shock left the young democracy without its most pragmatic defender, clearing a path for the political polarization that eventually dismantled the republic from within.

Holidays & observances

Bahá'ís celebrate Ayyám-i-Há — four or five intercalary days that don't belong to any month.

Bahá'ís celebrate Ayyám-i-Há — four or five intercalary days that don't belong to any month. They fall between the 18th and 19th months of the Bahá'í calendar, inserted to align the 19-month solar year with the seasons. These are days outside time, essentially. No fasting, no work restrictions. Instead: gift-giving, visiting the sick, feeding the poor, preparing for the nineteen-day fast that follows. The third day marks the midpoint of this suspension of the ordinary. Think of it as built-in grace period before discipline, engineered into the calendar itself. Even time needs a buffer.

The Bahá'í calendar has 19 months of 19 days each.

The Bahá'í calendar has 19 months of 19 days each. That's 361 days. Four or five days get inserted between the 18th and 19th months to make the solar year work. They're called Ayyám-i-Há — the Days of Há. Bahá'ís don't use them to balance the calendar and move on. They use them to prepare for the 19-day fast that follows. The preparation is hospitality, gift-giving, and service to others. Parties for children. Meals for neighbors. Visits to the sick. The calendar itself demands generosity. It's built into the math of the year.

Mar Abba is celebrated by the Assyrian Church of the East on this day.

Mar Abba is celebrated by the Assyrian Church of the East on this day. He was patriarch in the 6th century, when the Persian Empire ruled Mesopotamia. The Zoroastrian authorities arrested him for converting nobles to Christianity. They offered him freedom if he'd stop preaching. He refused. They exiled him to Azerbaijan for seven years. He kept writing theological texts. When he finally returned to his see, he reformed the church's liturgy and established new schools. The Assyrians still use his revised liturgy today. He died in exile during a second arrest, but his reforms outlasted the empire that tried to silence him.

Abercius was bishop of Hieropolis in the second century.

Abercius was bishop of Hieropolis in the second century. He preached across Asia Minor and made it to Rome. He wrote his own epitaph before he died — carved it into stone himself. It survived. It's in the Vatican now. The inscription describes his travels using coded Christian symbols: fish, bread, wine. To Romans reading it, just poetry about a journey. To Christians, a map of the faith spreading through the empire. He hid the entire structure of early Christianity in plain sight on his own tombstone.

Hilarius became pope in 461 and spent seven years fighting to keep the Western Church from splintering.

Hilarius became pope in 461 and spent seven years fighting to keep the Western Church from splintering. Bishops in Gaul were ignoring Rome. The Vandals had sacked the city six years earlier. Imperial authority was collapsing. He traveled personally to settle disputes, convened councils, and wrote letters asserting papal jurisdiction when nobody was sure it still existed. He died on February 29, 468. A leap year. His feast day moves to the 28th most years because the 29th doesn't exist. The pope who fought to hold the Church together gets remembered on a day that only appears every four years.

Romanus of Condat founded a monastery in the Jura Mountains with his brother.

Romanus of Condat founded a monastery in the Jura Mountains with his brother. They lived in a cave first. The rule they developed became the foundation for monastic life across Gaul — strict prayer schedules, manual labor, communal property. Nothing belonged to individuals. Not even shoes. When Romanus died in 463, the monastery held 150 monks. Within a century, their rule influenced Benedict of Nursia, whose Rule of Saint Benedict would govern Western monasticism for the next thousand years. The cave where two brothers prayed became the template.

Oswald of Worcester died February 29, 992.

Oswald of Worcester died February 29, 992. A leap year death means his feast day only exists every four years. He was Archbishop of York and Bishop of Worcester simultaneously — holding two of England's most powerful church positions at once. He'd been a Benedictine monk who reformed dozens of monasteries, founded the abbey at Ramsey, and negotiated peace between warring English kingdoms. But it's the calendar that made him unusual. Most medieval saints got their feast day on their death date. Oswald got his once every four years. The church eventually moved his commemoration to February 28 so people could actually celebrate it.

Saint Rufinus is celebrated today in the Catholic Church, though almost nothing certain is known about him.

Saint Rufinus is celebrated today in the Catholic Church, though almost nothing certain is known about him. Multiple saints share the name. The most venerated was supposedly a first-century missionary martyred in Assisi, Italy. His relics ended up in the cathedral there, which bears his name. But historians can't verify he existed. The church kept celebrating anyway. For centuries, believers prayed to a man who might have been a legend, at a tomb that might contain someone else entirely. Faith doesn't always wait for evidence.

The Orthodox Church runs on a different calendar.

The Orthodox Church runs on a different calendar. Not metaphorically — literally. They still use the Julian calendar, abandoned by most of the world in 1582. Christmas falls on January 7th. Easter moves around even more than the Western date. Thirteen days separate the two systems now. That gap grows by three days every four centuries. By 2100, it'll be fourteen days. Same faith, different math, two versions of when Christ was born.

Andalusia Day marks February 28, 1980, when 55.65% of voters approved regional autonomy.

Andalusia Day marks February 28, 1980, when 55.65% of voters approved regional autonomy. That specific percentage mattered. Spain's government had set a trap: the referendum needed absolute majority support — not just of votes cast, but of all eligible voters. Abstentions counted as "no." In Almería province, turnout fell just short. The government tried to block Andalusia's autonomy anyway. A million people took to the streets. Parliament overrode the results and granted autonomy in December 1981. The holiday now celebrates what people forced the government to accept, not what the vote technically achieved.

The Episcopal Church honors educators Anna Julia Cooper and Elizabeth Evelyn Wright for their relentless commitment t…

The Episcopal Church honors educators Anna Julia Cooper and Elizabeth Evelyn Wright for their relentless commitment to black liberation through schooling. Cooper challenged systemic inequality in her seminal work A Voice from the South, while Wright founded Voorhees College to provide vocational training for rural students, directly expanding educational access for generations of African Americans.

India celebrates National Science Day on February 28 because that's when C.V.

India celebrates National Science Day on February 28 because that's when C.V. Raman discovered the Raman Effect in 1928. He proved light changes wavelength when it scatters through a transparent material. The discovery explained why the sea is blue — not just reflection, but the water itself scattering light. He won the Nobel Prize two years later, the first Asian to win it in science. The holiday started in 1987 to get Indian students interested in research. It worked. India now produces more scientific papers annually than any country except China and the United States.

Taiwan marks Peace Memorial Day on February 28.

Taiwan marks Peace Memorial Day on February 28. It commemorates the 1947 massacre that began when a government agent pistol-whipped a widow selling untaxed cigarettes. Protests erupted. The Nationalist government sent troops from mainland China. They killed between 18,000 and 28,000 people over six weeks — teachers, doctors, students, anyone educated enough to organize. The government didn't allow public discussion of it for 40 years. Families couldn't mention how their relatives died. The holiday became official in 1997, fifty years after the killings. It's called Peace Memorial Day, not Massacre Memorial Day. The name itself is a negotiation.

Teachers' Day in Arab countries honors Ibn Khaldun, the 14th-century scholar who invented sociology before Europe had…

Teachers' Day in Arab countries honors Ibn Khaldun, the 14th-century scholar who invented sociology before Europe had a word for it. He argued that history follows patterns, that civilizations rise and fall in predictable cycles. He wrote this while fleeing political purges across North Africa. Students in 22 countries get the day off. Teachers work. The irony would've amused Ibn Khaldun, who spent his career explaining why institutions rarely reward the people who actually do the work.

Rare Disease Day falls on the last day of February — the rarest date on the calendar.

Rare Disease Day falls on the last day of February — the rarest date on the calendar. February 29th when it's a leap year, the 28th when it's not. Started in 2008 by a European patient advocacy group. It covers 7,000 diseases affecting 300 million people worldwide. Most have no treatment. The average diagnosis takes seven years and five doctors. Drug companies won't develop treatments because the patient populations are too small to be profitable. So rare disease patients crowdfund their own research. Parents learn molecular biology. They run clinical trials from their kitchen tables. The rarest day for the rarest conditions.

Finns celebrate their national identity today by honoring the publication of the Kalevala, the epic poem compiled by …

Finns celebrate their national identity today by honoring the publication of the Kalevala, the epic poem compiled by Elias Lönnrot from ancient oral folklore. By weaving these fragmented myths into a cohesive literary work, Lönnrot provided the Finnish people with a unified cultural heritage that fueled the nineteenth-century movement for independence from Russian rule.

Taiwan observes Peace Memorial Day to honor the thousands of civilians killed during the 1947 crackdown by Kuomintang…

Taiwan observes Peace Memorial Day to honor the thousands of civilians killed during the 1947 crackdown by Kuomintang forces. This day of reflection forces a public reckoning with the island's authoritarian past, transforming a period of state-sanctioned silence into a formal commitment to democratic transparency and human rights.

Vindémial († 680), 36e évêque de Vérone.

Vindémial († 680), 36e évêque de Vérone.

Ruellin († 650), disciple de saint Tugdual, 2e évêque de Tréguier.

Ruellin († 650), disciple de saint Tugdual, 2e évêque de Tréguier.

Protérius († 457), archevêque d'Alexandrie, martyrisé avec six compagnons par les partisans d'Eutychès.

Protérius († 457), archevêque d'Alexandrie, martyrisé avec six compagnons par les partisans d'Eutychès.

Nymphas et Eubule († Ier siècle), disciples de saint Paul.

Nymphas et Eubule († Ier siècle), disciples de saint Paul.

Marane et Cyre († 455), moniales à Alep.

Marane et Cyre († 455), moniales à Alep.

Serapião de Tmuis

Serapião de Tmuis

Christian feast day: February 28 (Eastern Orthodox liturgics)

Christian feast day: February 28 (Eastern Orthodox liturgics)

Onésimo de Bizâncio

Onésimo de Bizâncio

Múnia de Barcelona

Múnia de Barcelona

Aba I

Aba I

Aniversário do município de Paraty, Rio de Janeiro.

Aniversário do município de Paraty, Rio de Janeiro.

Bahaïsme : troisième jour du mois intercalaire / Ayyám-i-Há consacré aux dons dans le calendrier badīʿ.

Bahaïsme : troisième jour du mois intercalaire / Ayyám-i-Há consacré aux dons dans le calendrier badīʿ.

Aniversário dos municípios de Frederico Westphalen, Marau, Espumoso, Casca, Nova Petrópolis e Esteio, Rio Grande do Sul.

Aniversário dos municípios de Frederico Westphalen, Marau, Espumoso, Casca, Nova Petrópolis e Esteio, Rio Grande do Sul.

Festejo del día: San Leandro de Sevilla.

Festejo del día: San Leandro de Sevilla. (imagen ilustrativa).

Santos Mártires de Alejandría (f.

Santos Mártires de Alejandría (f. 262).

San Román de Jura, abad (f.

San Román de Jura, abad (f. 463).

San Rufino, mártir (f.

San Rufino, mártir (f. 250).

Santas Marana y Cira de Berea, vírgenes (s.

Santas Marana y Cira de Berea, vírgenes (s. V).

Beato Daniel Brottier, presbítero (f.

Beato Daniel Brottier, presbítero (f. 1936).

Beato Timoteo Trojanowski, presbítero y mártir (f.

Beato Timoteo Trojanowski, presbítero y mártir (f. 1942).

San Hilario, papa (f.

San Hilario, papa (f. 468).

San Osvaldo de Worchester, obispo, canónigo y monje (f.

San Osvaldo de Worchester, obispo, canónigo y monje (f. 992).

Kirchliche Gedenktage Martin Bucer, elsässischer Ordensmann und Reformator (evangelisch)

Kirchliche Gedenktage Martin Bucer, elsässischer Ordensmann und Reformator (evangelisch)

Namenstage Roman, Silvana

Namenstage Roman, Silvana

Beata Antonia de Florencia, fundadora y abadesa (f.

Beata Antonia de Florencia, fundadora y abadesa (f. 1472).

San Agusto Chapdelaine, presbítero y mártir (f.

San Agusto Chapdelaine, presbítero y mártir (f. 1856).

Aniversário dos municípios de Sebastianópolis do Sul e Salesópolis, São Paulo.

Aniversário dos municípios de Sebastianópolis do Sul e Salesópolis, São Paulo.

Dia Mundial de Combate a LER/DORT

Dia Mundial de Combate a LER/DORT

Torcato Félix

Torcato Félix

Unión Europea Unión Europea: Día de las Enfermedades Raras.

Unión Europea Unión Europea: Día de las Enfermedades Raras.

Arabia Saudita Arabia Saudita | Baréin Baréin | Emiratos Árabes Unidos Emiratos Árabes Unidos | Jordania Jordania | O…

Arabia Saudita Arabia Saudita | Baréin Baréin | Emiratos Árabes Unidos Emiratos Árabes Unidos | Jordania Jordania | Omán Omán | Yemen Yemen: Día del Maestro.

Argentina Argentina: Día del Bailarín.Celebración en honor al nacimiento del bailarín argentino Jorge Donn (1947-1992…

Argentina Argentina: Día del Bailarín.Celebración en honor al nacimiento del bailarín argentino Jorge Donn (1947-1992), que fue un destacado bailarín, intérprete y coreógrafo argentino, considerado uno de los más grandes e icónicos de la danza del siglo XX.

Perú Perú: Día Nacional de la Lucha contra la Osteoporosis.Esta fecha busca concientizar a la sociedad sobre la impor…

Perú Perú: Día Nacional de la Lucha contra la Osteoporosis.Esta fecha busca concientizar a la sociedad sobre la importancia de cuidar la salud ósea.

Roger et son féminin Rogère et leurs variantes (voir 27 février et 30 décembre).

Roger et son féminin Rogère et leurs variantes (voir 27 février et 30 décembre).

Rivelen et ses variantes ou dérivés autant bretons : Ruellan, Ruellen, Ruellin, Ruellon, etc.

Rivelen et ses variantes ou dérivés autant bretons : Ruellan, Ruellen, Ruellin, Ruellon, etc.

Nicolas de Pskov († 1576), fol en Christ à l'époque du tsar Ivan le Terrible.

Nicolas de Pskov († 1576), fol en Christ à l'époque du tsar Ivan le Terrible.

Basile le Confesseur (en) († 747), compagnon de Procope le Décapolite (it), défenseur des saintes images sous Léon II…

Basile le Confesseur (en) († 747), compagnon de Procope le Décapolite (it), défenseur des saintes images sous Léon III l'Isaurien.