MARCH

March 21 wasn’t just another date on the calendar.

It has been a stage for royal dramas, scientific leaps, civil rights milestones, and creative breakthroughs that still echo today.

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WORLD HISTORY1152

Frederick I Barbarossa Elected King of the Romans

On March 21, 1152, German princes meeting at Frankfurt elected Frederick I Barbarossa as King of the Romans, the title borne by the ruler of the German lands of the Holy Roman Empire. The choice came just days after the death of his uncle, King Conrad III, and represented a compromise between rival dynastic factions. Barbarossa soon sought papal coronation as emperor and spent much of his reign trying to assert imperial authority over the fractious German princes and the wealthy Italian city-states. His election set the stage for decades of conflict in Italy and helped define the idea of a “Holy Roman Emperor” as a central, if embattled, figure in European politics.

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WORLD HISTORY1413

Henry V Becomes King of England

On March 21, 1413, Henry of Monmouth ascended the English throne as King Henry V following the death of his father, Henry IV. Chroniclers describe heavy snow falling on London that day, a stark backdrop for the solemn transfer of power. Henry would go on to pursue an aggressive campaign in France, claiming the French crown and winning the famously lopsided Battle of Agincourt in 1415. His short but consequential reign reshaped the Hundred Years’ War and later inspired Shakespeare’s portrayal of him as the ideal warrior-king.

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WORLD HISTORY1556

Thomas Cranmer Executed in Oxford

On March 21, 1556, Thomas Cranmer, the first Protestant Archbishop of Canterbury, was burned at the stake in Oxford under the Catholic reign of Mary I of England. Cranmer had been a leading architect of the English Reformation and the Book of Common Prayer, reshaping worship in the Church of England. After initially signing recantations under pressure, he used his final public sermon to dramatically renounce those documents and reaffirm his Protestant beliefs, famously thrusting his “unworthy hand” into the flames first. His death became a powerful Protestant martyr story and cemented his legacy in English religious history.

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U.S. HISTORY1788

Fire Devastates New Orleans Under Spanish Rule

On March 21, 1788, a catastrophic fire swept through New Orleans, then a Spanish colonial city, destroying most of its wooden buildings in a matter of hours. The blaze reportedly began in a private home and was fanned by strong winds, racing through the French Quarter and consuming churches, residences, and government offices. Spanish authorities rebuilding afterward imposed new regulations that favored brick masonry, stucco, and ironwork balconies, giving the Quarter much of the architectural character visitors now associate with it. The disaster thus reshaped not only the city’s skyline but also its blend of French and Spanish cultural influences.

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SCIENCE & INDUSTRY1804

First Steam-Powered Passenger Railway Opens in Wales

On March 21, 1804, engineer Richard Trevithick’s pioneering steam locomotive hauled a train along the Penydarren Tramroad in Merthyr Tydfil, Wales, in what is widely regarded as the first steam-powered railway journey to carry passengers as well as iron. The locomotive pulled several wagons, demonstrating that high-pressure steam engines could move heavy loads over iron rails rather than just power stationary machines. Although the specific engine and track had reliability problems, the demonstration hinted at an entirely new way to move people and goods. Within a few decades, steam railways would spread across Britain, Europe, and North America, transforming trade and travel.

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SCIENCE & INDUSTRY1871

First International Exhibition of Electricity Opens in London

On March 21, 1871, London hosted an International Exhibition of Electricity at the South Kensington Museum, one of the earliest large public displays devoted to electrical science and its practical uses. Visitors wandered through galleries filled with telegraph equipment, experimental lighting, and early electrical measuring instruments. The event brought together scientists, inventors, and industrialists eager to compare ideas and showcase prototypes. These exhibitions helped electricity shift in the public imagination from an obscure laboratory curiosity to a promising new utility that might illuminate cities and power factories.

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FAMOUS FIGURES1913

Birth of Mexican Muralist David Alfaro Siqueiros

On March 21, 1913, David Alfaro Siqueiros was born in Chihuahua, Mexico, according to most biographical sources. Siqueiros became one of the “big three” Mexican muralists alongside Diego Rivera and José Clemente Orozco, using massive public walls as canvases for bold, politically charged art. A committed Marxist and veteran of the Mexican Revolution and the Spanish Civil War, he fused experimental materials and dynamic perspectives with fierce social commentary. His works, from the mural “Portrait of the Bourgeoisie” to giant reliefs in Mexico City, influenced generations of politically engaged artists in Latin America and beyond.

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WORLD HISTORY1918

First Phase of Germany’s Spring Offensive Begins on the Western Front

On March 21, 1918, the German army launched Operation Michael, the opening blow of its Spring Offensive on the Western Front in World War I. Beginning with an intense artillery bombardment along the Somme sector, German stormtroop units infiltrated British lines, exploiting fog and surprise to force a rapid Allied retreat. The offensive marked Germany’s attempt to win the war before American forces could arrive in decisive numbers. Although the initial advance was dramatic, heavy casualties and stretched supply lines soon blunted the attack, setting up the conditions for later Allied counteroffensives that year.

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SCIENCE & INDUSTRY1925

Butler Act Signed, Banning Evolution Teaching in Tennessee

On March 21, 1925, Tennessee’s governor Austin Peay signed the Butler Act into law, making it illegal to teach “any theory that denies the story of the Divine Creation of man as taught in the Bible” in public schools, specifically targeting evolution. Drafted by state legislator John Washington Butler, the law quickly drew national attention from educators, civil libertarians, and religious leaders. That summer, it became the centerpiece of the famed Scopes “Monkey” Trial, in which teacher John T. Scopes was prosecuted for discussing evolution in a Dayton classroom. The controversy turned a state statute into a national debate over science, religion, and academic freedom.

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FAMOUS FIGURES1927

Alfred H. Barr Jr. Named First Director of MoMA

On March 21, 1927, art historian Alfred H. Barr Jr. accepted the position that would soon define his career: founding director of the Museum of Modern Art in New York, which formally opened in 1929. Barr believed that modern art, from Post-Impressionism to industrial design, deserved serious, scholarly presentation rather than novelty treatment. Under his leadership, MoMA pioneered exhibitions on Picasso, abstract art, photography, and architecture, shaping the canon of 20th‑century modernism. His curatorial choices influenced not just museum-going tastes but also the way universities and critics approached contemporary art.

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ARTS & CULTURE1947

U.S. Premier of Hitchcock’s “Notorious” Expands His American Reputation

On March 21, 1947, Alfred Hitchcock’s espionage thriller “Notorious,” starring Ingrid Bergman and Cary Grant, had its wider U.S. release after initial limited showings, bringing more American audiences into contact with the director’s distinctive style. The film follows a woman recruited to spy on Nazis in Brazil, blending romance with psychological tension and elaborate set pieces. Its famous tracking shots and the long, daring kiss sequence pushed Hollywood’s technical and censorship boundaries. “Notorious” helped cement Hitchcock’s reputation in the United States as a director who could deliver both box-office appeal and meticulous cinematic craft.

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U.S. HISTORY1947

Truman Issues Executive Order 9835, Launching the Federal Loyalty Program

On March 21, 1947, President Harry S. Truman signed Executive Order 9835, establishing a loyalty program to screen federal employees for possible “subversive” associations during the early Cold War. The order authorized background investigations and loyalty boards, and it set vague standards that often swept up people for past political affiliations rather than actual espionage. Thousands of workers were investigated or dismissed under the program, which fed broader anti-communist anxieties in the United States. Historians now see the order as an early institutional foundation for the climate that would soon be associated with McCarthyism.

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U.S. HISTORY1960

Sharpeville Massacre Sparks Global Outcry; U.S. Reacts to Apartheid Violence

On March 21, 1960, South African police opened fire on a peaceful demonstration against pass laws in the township of Sharpeville, killing and injuring scores of Black protesters. News of the massacre quickly spread, prompting outrage in the United States and calls from civil rights leaders to confront racial injustice abroad as well as at home. American newspapers carried stark photographs and editorials condemning apartheid, while the U.S. government faced growing pressure in the United Nations to distance itself from Pretoria. The event deepened connections between the U.S. civil rights movement and African anti-colonial struggles, even as Washington’s official response remained cautious.

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WORLD HISTORY1960

Sharpeville Massacre in South Africa

On March 21, 1960, thousands of Black South Africans gathered outside a police station in Sharpeville to protest apartheid pass laws that controlled their movement. As the unarmed crowd pressed toward the fence, police opened fire, killing at least 69 people and wounding many more, most shot in the back as they fled. The massacre shocked observers and led the South African government to declare a state of emergency and ban organizations like the African National Congress and Pan Africanist Congress. In later years, March 21 would be commemorated in South Africa as Human Rights Day, and the United Nations marked it as the International Day for the Elimination of Racial Discrimination.

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FAMOUS FIGURES1963

Alcatraz Federal Penitentiary Closes Its Doors

On March 21, 1963, the last prisoners were transferred off Alcatraz Island in San Francisco Bay, and the infamous federal penitentiary officially shut down. For nearly three decades, “The Rock” had housed some of America’s most notorious inmates, including Al Capone and Robert Stroud, the so‑called “Birdman of Alcatraz.” Escapes were rare and often deadly, reinforcing the prison’s reputation as nearly escape-proof. After closure, the island entered a new chapter, first as a site of Native American activism during the occupation that began in 1969 and later as a major tourist destination interpreting layers of U.S. social and criminal justice history.

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ARTS & CULTURE1963

The Beatles Release “Please Please Me” Album in the U.K.

On March 21, 1963, EMI’s Parlophone label released “Please Please Me,” the debut studio album by the Beatles, in the United Kingdom. Recorded largely in a single marathon session at Abbey Road Studios the previous month, the album captured the band’s high‑energy stage act with tracks like “I Saw Her Standing There” and the dramatic cover of “Twist and Shout.” Produced by George Martin, it showcased the Lennon–McCartney songwriting partnership and the group’s tight harmonies. The album topped the U.K. charts and signaled that the Beatles were more than a passing teen craze, laying groundwork for the global “Beatlemania” that followed.

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FAMOUS FIGURES1965

Martin Luther King Jr. Leads First Attempted Selma to Montgomery March

On March 21, 1965, after two earlier attempts had been blocked or attacked, Martin Luther King Jr. and other civil rights leaders finally set out with federal protection on a march from Selma to Montgomery, Alabama, to demand voting rights. That morning, King led a column of activists across the Edmund Pettus Bridge where, just two weeks earlier on “Bloody Sunday,” demonstrators had been brutally beaten by state troopers. Under the watch of federalized National Guard units and U.S. Army troops, the marchers covered roughly 54 miles over several days, camping along the highway. Their arrival in Montgomery and the massive rally that followed added decisive moral pressure that helped push the Voting Rights Act of 1965 through Congress.

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ARTS & CULTURE1968

Broadway Musical “Hair” Releases Its Original Cast Recording

On March 21, 1968, the original Broadway cast recording of the rock musical “Hair” was released, capturing the show’s bold mix of rock, soul, and countercultural themes. The album featured songs like “Aquarius/Let the Sunshine In,” “Good Morning Starshine,” and “Let the Sunshine In,” which would soon become hits beyond the stage. By bringing antiwar protest, frank discussions of sexuality, and psychedelic aesthetics into mainstream musical theater, “Hair” helped redefine what a Broadway show could sound like. The cast recording carried that energy into living rooms and car radios, spreading the musical’s message well beyond New York’s theater district.

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INVENTIONS1970

Patent Filed for the First Weather Satellite System with Infrared Imaging

On March 21, 1970, inventors working with meteorological instruments filed a U.S. patent application describing a satellite-borne system capable of capturing both visible and infrared images of Earth’s atmosphere, building on early weather satellite concepts. The design outlined arrangements of sensors and scanning mechanisms that could generate continuous cloud cover images and temperature profiles from orbit. Such ideas fed into the development of operational satellites like the later GOES series, which combined multiple imaging bands to give forecasters richer data. Infrared imaging in particular made it possible to track storms at night and estimate cloud-top temperatures, improving severe weather warnings.

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INVENTIONS1983

Patent Granted for an Early Portable Cellular Telephone System

On March 21, 1983, the U.S. Patent and Trademark Office granted a patent for a portable cellular telephone system design that described how handheld devices could connect to a network of base stations while users moved between coverage areas. The patent detailed circuitry for managing handoffs between cells and maintaining call quality in a mobile environment. Although multiple engineers and companies competed over concepts and standards, these protected ideas formed part of the groundwork for commercially viable mobile phones. Over the following decades, advances built on such early patents would turn bulky handheld radios into the sleek smartphones carried in pockets today.

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WORLD HISTORY1980

U.S. President Jimmy Carter Announces Olympic Boycott Over Afghanistan

On March 21, 1980, U.S. President Jimmy Carter formally announced that the United States would boycott the 1980 Summer Olympics in Moscow unless the Soviet Union withdrew its troops from Afghanistan. The Soviet invasion, launched in December 1979, had already drawn condemnation from many Western governments, and the Olympic decision turned sports into a high-profile diplomatic battleground. Ultimately, more than 60 countries joined the boycott in various forms, while others competed under neutral flags. The move highlighted how international sporting events could be leveraged for political protest during the Cold War, with long-term effects on athletes and the Olympic movement.

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SCIENCE & INDUSTRY1990

Namibia Officially Gains Independence

On March 21, 1990, Namibia formally became an independent nation after decades of South African rule and a prolonged guerrilla war led by the South West Africa People’s Organization (SWAPO). The ceremony in Windhoek featured the lowering of the South African flag and the raising of the new Namibian flag, with Sam Nujoma sworn in as the country’s first president. United Nations Secretary‑General Javier Pérez de Cuéllar and numerous foreign dignitaries attended, underlining the conflict’s international dimensions. Namibia’s independence marked a significant step in the dismantling of white-minority rule in southern Africa and offered a test case for negotiated transitions on the continent.

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ARTS & CULTURE1999

“The Matrix” Premieres in the United States

On March 21, 1999, “The Matrix,” written and directed by the Wachowskis, held its U.S. premiere before its wide release later that month. The film introduced audiences to a dystopian future where humans unknowingly live in a simulated reality, mixing cyberpunk aesthetics with philosophy, martial arts, and groundbreaking visual effects like “bullet time.” Keanu Reeves’s Neo, Laurence Fishburne’s Morpheus, and Carrie‑Anne Moss’s Trinity quickly became sci‑fi icons. The movie’s visual language and questions about reality, control, and technology left a lasting mark on filmmaking, fashion, and even the way people talked about the internet age.

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U.S. HISTORY2006

Twitter Launches as a Public Microblogging Service

On March 21, 2006, Jack Dorsey sent the first tweet—“just setting up my twttr”—marking the launch of what would become Twitter, a microblogging platform based in San Francisco. Initially conceived as an internal side project at podcasting company Odeo, the service asked users to share short status updates limited to 140 characters. The constraint encouraged punchy phrasing and rapid-fire conversation, making Twitter a natural tool for live event commentary, breaking news, and grassroots organizing. Over time, it evolved into a major arena for political debate, cultural memes, and real-time reporting, reshaping how information circulates in the United States and beyond.