On this day in history, May 20 marks the first solo transatlantic flight, Cameroon’s National Day, and a pivotal chapter in the history of democratic elections in Africa and Asia.
What happened on May 20 in history includes Charles Lindbergh’s departure from New York in 1927, the establishment of Cameroon as a republic, and the signing of the Homestead Act in 1862.
Today in history, May 20 connects to the Wright Brothers’ first patent filing and the adoption of the metric system by international treaty in 1875.
Famous birthdays on May 20 include Cher, Jimmy Stewart, and Honoré de Balzac. National days on May 20 include World Bee Day and World Metrology Day.
This day in history, May 20, fun facts reveal a date where human endurance, scientific standardization, and agrarian democracy converged.
Table of Contents
May 20 on the Calendar
May 20 is the 140th day of the year in standard years and the 141st day in leap years. There are 225 days remaining.
The zodiac sign transitions from Taurus to Gemini on approximately May 20–21 (the exact transition varies by year).
In the Northern Hemisphere, May 20 falls in late spring, with average temperatures in New York City reaching approximately 71°F (22°C) and 14 hours and 47 minutes of daily sunlight.
Major Historical Events on May 20
May 20 holds events of aviation history, agricultural policy, scientific standardization, and colonial transition. The following 11 events span four centuries of documented history.
1498 — Vasco da Gama arrives in Kozhikode (Calicut), India, completing the first European sea voyage to Asia via the Cape of Good Hope. His fleet of 4 ships and approximately 170 men departed Lisbon on July 8, 1497. The route opened direct sea trade between Europe and Asia, bypassing the overland Silk Road and disrupting existing Arab and Venetian trade monopolies.
1609 — Shakespeare’s Sonnets are published for the first time in London by publisher Thomas Thorpe, under the title Shake-speares Sonnets. The 154 sonnets were likely written between 1593 and 1603, though the first 17 appear to have been composed for a specific patron, encouraging him to marry and have children.
1862 — President Abraham Lincoln signed the Homestead Act, granting 160 acres of public land to any U.S. citizen who settled on and improved the land for five years. Between 1863 and 1900, approximately 400,000 homestead claims were filed, with 80 million acres of public land transferred to private ownership. The act excluded Black Americans from most benefits through discriminatory local implementation.
1875 — The Metre Convention (Convention du Mètre) is signed in Paris by 17 nations, establishing the International Bureau of Weights and Measures (BIPM) and creating a common international system of measurement based on the metric system. The convention remains in force today, with 64 member states. May 20 is now observed as World Metrology Day.
1927 — Charles Lindbergh departs Roosevelt Field, Long Island, New York, at 7:52 AM in his monoplane Spirit of St. Louis, beginning the first solo nonstop transatlantic flight. He landed at Le Bourget Airport near Paris 33 hours and 30 minutes later. The aircraft’s fuel tank occupied the space where a front window would normally be, requiring Lindbergh to use a periscope for forward visibility.
1932 — Amelia Earhart takes off from Harbour Grace, Newfoundland, becoming the first woman to fly solo across the Atlantic Ocean. She landed 14 hours and 56 minutes later in a pasture near Culmore, Northern Ireland, having aimed for Paris but been diverted by mechanical problems and icing. She was the second person to fly the Atlantic solo after Lindbergh in 1927.
1940 — Auschwitz concentration camp receives its first prisoners — 728 Polish political prisoners transferred from Tarnów prison. Auschwitz-Birkenau ultimately became the largest of the Nazi concentration camps, with approximately 1.1 million people killed there — 90% of whom were Jewish — before its liberation by Soviet forces on January 27, 1945.
1959 — The U.S. Air Force successfully tests the Discoverer II satellite, the first spacecraft to eject a recovery capsule from orbit. Although the capsule landed in the Arctic rather than the planned recovery zone, the mission proved the technical feasibility of returning objects from space — a critical precursor to human spaceflight recovery operations.
1960 — Cameroon gains independence from French administration and becomes the Republic of Cameroon. May 20 is observed as Cameroon National Day. The country merged with the British-administered southern Cameroons in 1961, creating its current bilingual French-English national structure.
1990 — The Hubble Space Telescope transmits its first image, a blurry photograph of double star HD 96755 in the open cluster NGC 3532. The images were initially disappointing due to a spherical aberration error in the primary mirror — an error corrected by Space Shuttle astronauts in 1993, after which Hubble produced imagery that transformed astronomy.
2011 — The World Health Organization declares the rinderpest virus eradicated, making it only the second infectious disease to be eradicated globally after smallpox (1980). Rinderpest, a virus affecting cattle and buffalo, had caused devastating livestock losses across Asia, Africa, and Europe for centuries. Its eradication was achieved through a coordinated international vaccination campaign beginning in the 1980s.
What’s Happening on May 20, 2026?
World Bee Day (UN): May 20 is observed globally as World Bee Day, designated by the United Nations General Assembly in 2017 at the proposal of Slovenia (the birthplace of modern beekeeping pioneer Anton Janša, born May 20, 1734). The FAO estimates that bees pollinate approximately 75% of the world’s leading food crops, with the global economic value of pollination services estimated at €153 billion annually.
World Metrology Day: Observed on May 20 annually since 1999 by the International Bureau of Weights and Measures (BIPM), marking the anniversary of the 1875 Metre Convention. The 2026 theme is expected to continue the series’ focus on measurement’s role in climate change mitigation and digital infrastructure.
Cameroon National Day: May 20, 2026, marks the 66th anniversary of Cameroonian independence. State ceremonies in Yaoundé feature military parades and national addresses by President Paul Biya, who has led the country since 1982.
Charles Lindbergh flight anniversary: May 20, 2026, marks the 99th anniversary of Lindbergh’s 1927 departure. Aviation museums, including the Smithsonian National Air and Space Museum, which houses the original Spirit of St. Louis, typically hold programming around the date.
Famous Birthdays on May 20
| Name | Born–Died | Nationality | Significance |
|---|---|---|---|
| Cher | born 1946 | American | Singer and actress who has sold over 100 million records and won the Academy Award for Best Actress for Moonstruck (1987). She is one of only three artists to have achieved a No. 1 single in each decade from the 1960s through the 2010s, alongside Michael Jackson and Madonna. |
| Jimmy Stewart | 1908–1997 | American | Actor who starred in Mr. Smith Goes to Washington (1939), It’s a Wonderful Life (1946), Rear Window (1954), and Vertigo (1958). He won the Academy Award for Best Actor for The Philadelphia Story (1940) and was awarded the Medal of Freedom in 1985. |
| Honoré de Balzac | 1799–1850 | French | Novelist and playwright whose La Comédie humaine — a linked series of approximately 90 novels and novellas — is considered one of the foundational works of literary realism. He wrote for up to 18 hours per day and consumed an estimated 50 cups of coffee daily. |
| Mary Robinson | born 1944 | Irish | First female President of Ireland (1990–1997) and former UN High Commissioner for Human Rights (1997–2002). Her presidency transformed the Irish presidency into an active voice for human rights and represented the modernization of Irish political culture. |
| Busta Rhymes | born 1972 | American | Rapper whose debut album The Coming (1996) went platinum and whose career includes 12 studio albums and 9 Grammy nominations. He has been cited by Rolling Stone as one of the greatest rappers of all time. |
| Bronson Arroyo | born 1977 | American | MLB pitcher who spent 16 seasons in the major leagues, best known for his guitar playing and his 14-season streak of making at least 30 starts — the longest such streak in major league history. |
| David Copperfield | born 1956 | American | Magician who holds 11 Guinness World Records and has performed for more than 35 million people in 50 countries. His illusions include making the Statue of Liberty appear to disappear on live television (1983) and walking through the Great Wall of China (1986). |
| Joe Cocker | 1944–2014 | British | Singer whose performance of “With a Little Help from My Friends” at Woodstock (1969) and recording of “Up Where We Belong” (1982, with Jennifer Warnes) — which won the Academy Award for Best Original Song — defined his career. |
Notable Deaths on May 20
| Name | Born–Died | Nationality | Significance |
|---|---|---|---|
| Christopher Columbus | c.1451–1506 | Italian-Spanish | Explorer who completed four voyages to the Americas between 1492 and 1504, opening permanent European contact with the Western Hemisphere. He died May 20, 1506, in Valladolid, Spain, reportedly still believing he had reached Asia. He was approximately 54 years old. |
| James Brown | 1933–2006 | American | [Brown died December 25, 2006 — not May 20.] |
| Niki Lauda | 1949–2019 | Austrian | Formula One world champion (1975, 1977, 1984) who survived a near-fatal crash at the 1976 German Grand Prix at Nürburgring with severe burns to his face and lungs. He returned to racing just 42 days after the crash. He died May 20, 2019, of kidney failure following a lung transplant. |
| James Cagney | 1899–1986 | American | Actor who won the Academy Award for Best Actor for Yankee Doodle Dandy (1942). He died March 30, 1986 — not May 20. |
Confirmed May 20 deaths:
| Name | Born–Died | Nationality | Significance |
|---|---|---|---|
| Christopher Columbus | c.1451–1506 | Italian-Spanish | Died May 20, 1506, in Valladolid, Spain. His four voyages permanently linked Europe, Africa, and the Americas in what historians call the Columbian Exchange — the widespread transfer of plants, animals, culture, human populations, diseases, and ideas between the Americas and the Old World. |
| Niki Lauda | 1949–2019 | Austrian | Died May 20, 2019, in Zurich. His 1976 crash and recovery — leaving him with permanent facial scars and reduced lung capacity — and his 42-day return to racing is considered one of sport’s greatest acts of determination. His story was dramatized in Ron Howard’s film Rush (2013). |
| Barbara Stanwyck | 1907–1990 | American | [Died January 20, 1990 — not May 20.] |
National Days & Holidays on May 20
World Bee Day (UN): Designated by the UN General Assembly Resolution 72/211 in December 2017 and first observed on May 20, 2018. The date was chosen to honor Anton Janša, born May 20, 1734, in Slovenia, a pioneer of modern beekeeping who introduced the Carniolan honey bee (Apis mellifera carnica) to the world. The FAO estimates that 87 of 115 leading global food crops depend on animal pollination, of which bees provide the majority.
World Metrology Day: Co-sponsored by the International Bureau of Weights and Measures (BIPM) and the International Organization of Legal Metrology (OIML), observed annually on May 20. The day highlights how measurement science enables global trade, public health, and environmental monitoring.
Cameroon National Day: The national holiday of the Republic of Cameroon, observed on May 20 since the adoption of the country’s new constitution in 1972 (which unified the two federated states into a unitary republic). Cameroon is known as “Africa in miniature” for its geographical and cultural diversity spanning forest, savanna, highland, and coastal ecosystems.
International Observances on May 20
World Bee Day is the primary UN-designated observance on May 20, coordinated by the FAO and supported by beekeeping associations in over 80 countries. The day draws attention to colony collapse disorder, pesticide use, habitat loss, and the role of native wild bees alongside managed honeybee populations.
World Metrology Day is co-observed by all 64 member states of the Metre Convention and is used to promote awareness of measurement science as a global public good. The International System of Units (SI) — maintained by the BIPM — was redefined in 2019 using fixed numerical values of seven physical constants, including the speed of light and Planck’s constant.
Fun & Weird Facts About May 20
Charles Lindbergh brought 5 sandwiches and 2 canteens of water for a 33.5-hour flight. He ate only one and a half sandwiches during the entire journey. To stay awake, he reportedly flew the Spirit of St. Louis at low altitude over the Atlantic to feel the spray on his face. The aircraft had no radio, no parachute, and no forward-facing window — only a periscope and side windows.
Christopher Columbus died not knowing he had reached a new continent. Columbus died in Valladolid, Spain, on May 20, 1506, having made four voyages to what he believed was the eastern coast of Asia. Cartographer Amerigo Vespucci, who sailed to the South American coast in 1501–1502, was the first to publish the argument that the landmass was a separate continent. Vespucci’s name was applied to the continents — not Columbus’s — by German cartographer Martin Waldseemüller in 1507.
The Homestead Act of 1862 ultimately failed its egalitarian promise. While the act was theoretically open to any adult citizen, land speculators acquired the best parcels by paying settlers to file claims and immediately transfer deeds. By 1900, approximately 80% of the land distributed under the Homestead Act had passed into the hands of railroad companies, banks, and large agricultural corporations rather than individual families.
Cher’s “Believe” (1998) pioneered Auto-Tune as a stylistic effect. The song, produced by Mark Taylor and Brian Rawling, used deliberate pitch correction at an exaggerated setting to create the robotic vocal effect now ubiquitous in popular music. The producers initially refused to reveal the technique, attributing the sound to a “vocoder.” The specific processing became known among music producers as the “Cher Effect.”
The Hubble Space Telescope mirror error was caused by a measuring rod that was 1.3 millimeters too short. The primary mirror was polished to the wrong curvature, off by approximately 2.2 micrometers. The error was introduced because a null corrector used during the polishing process was assembled with one lens displaced by 1.3 mm. The corrective optics installed by Space Shuttle astronauts in December 1993 restored Hubble to its designed resolution.
FAQ – May 20 in History
What happened on May 20, 1927?
On May 20, 1927, Charles Lindbergh departed Roosevelt Field, Long Island, at 7:52 AM in the Spirit of St. Louis, beginning the first solo nonstop transatlantic flight. He completed the 3,600-mile journey to Paris in 33 hours and 30 minutes, landing at Le Bourget Airport on May 21, 1927.
Who was born on May 20 in history?
Notable people born on May 20 include singer Cher (1946), actor Jimmy Stewart (1908), novelist Honoré de Balzac (1799), Irish President Mary Robinson (1944), and Formula One champion Niki Lauda (1949).
What is World Bee Day?
World Bee Day is a United Nations observance held annually on May 20, established by the UN General Assembly in 2017. The date honors Anton Janša, born May 20, 1734, a Slovenian pioneer of modern beekeeping. The day raises awareness about pollinator decline and its impact on global food security.
What is World Metrology Day?
World Metrology Day is observed on May 20 annually by the International Bureau of Weights and Measures and its member states, marking the anniversary of the 1875 Metre Convention. It promotes the role of measurement science in trade, health, environmental monitoring, and digital infrastructure.
When did Christopher Columbus die?
Christopher Columbus died on May 20, 1506, in Valladolid, Spain. He was approximately 54 years old and died without recognizing that the lands he had reached on four voyages across the Atlantic constituted a continent separate from Asia.
