A birthday on the globe
14 April on the globe: what happened in the world on this day, and who was born
For 14 April, the English Wikipedia lists 64 events and 237 births. 40 of the events stand at their places as rays of light; nine more are dashed circles, where the sentence links only to a country or a sea. The taller the ray, the longer ago it happened. The people born that day come further down, as blue points.
A birthday, yours or someone else’s:
Turn it into a greetingScroll: the globe turns to each place
The day you were born, on the globe.
Three things from your day
Scroll: your day first, then 14 April through the years
The Earth on 14 April
The picture on the globe was assembled by NASA from satellite photographs taken in April 2004: the snow, the ice and the green are those of the month.
On 14 April the Sun passes straight overhead at noon along the parallel of 9.6° north. In London, the day lasts about 13 hours 50 minutes.
Beyond 80° north the Sun no longer sets; beyond 80° south it no longer rises.
The line between day and night is tilted on the globe exactly as on this day of the year. On the dark side you can see the lights of towns.
Europe · Exposition Universelle
1900
The world's fair Exposition Universelle opens in Paris.
On the map: the coordinates Wikidata gives for the article “Exposition Universelle”.
Europe · 1929 Monaco Grand Prix
1929
The inaugural Monaco Grand Prix takes place in the Principality of Monaco. William Grover-Williams wins driving a Bugatti Type 35.
On the map: the coordinates Wikidata gives for the article “1929 Monaco Grand Prix”.
North America · Philadelphia
1775
The Society for the Relief of Free Negroes Unlawfully Held in Bondage, the first abolition society in North America, is organized in Philadelphia by Benjamin Franklin and Benjamin Rush.
On the map: Philadelphia.
North America · Hauser Dam
1908
Hauser Dam, a steel dam on the Missouri River in Montana, fails, sending a surge of water 25 to 30 feet (7.6 to 9.1 m) high downstream.
On the map: Hauser Dam.
Oceans · Hungarian Declaration of Independence
1849
Hungary declares itself independent of Austria with Lajos Kossuth as its leader.
On the map: the coordinates Wikidata gives for the article “Hungarian Declaration of Independence”.
14 April
Born on 14 April#
The English Wikipedia lists 237 births for this day. The blue points are the birthplaces of 60 of these people: those written about in the most Wikipedia editions, where Wikidata gives a place of birth.
Born on 14 April
1126
Averroes, Andalusian Arab physician and philosopher (died 1198)
Place of birth: Córdoba.
Born on 14 April
1629
Christiaan Huygens, Dutch mathematician, astronomer, and physicist (died 1695)
Place of birth: The Hague.
Born on 14 April
1889
Arnold J. Toynbee, English historian and academic (died 1975)
Place of birth: London.
Born on 14 April
1940
Julie Christie, Indian-English actress and activist
Place of birth: Chabua.
Born in Britain and Ireland
1904
John Gielgud, English actor, director, and producer (died 2000)
Place of birth: South Kensington.
Born in Britain and Ireland
1945
Ritchie Blackmore, English guitarist and songwriter
Place of birth: Weston-super-Mare.
Born in Britain and Ireland
1958
Peter Capaldi, Scottish actor
Place of birth: Glasgow.
14 April
Number one in the charts that week
At the cinema
An animal recorded that day
The record can be seen in GBIF, which brings together wildlife records from around the world.
All your birthdays
The weather that day
Data: Met Office Hadley Centre (HadCET); NOAA (GHCN-Daily, Mauna Loa).
Above the Earth
Sources: Jonathan McDowell, GCAT (launches); GFZ Potsdam (Kp index). Days are counted in Universal Time.
Football that day
International matches played that day:
Source: the “International football results” dataset kept by Mart Jürisoo (CC0).
Also that day
The earthquake’s page at the USGS
Source: the USGS catalogue. The day is counted in Universal Time (UTC).
In those days
Make a link for someone
Type the name, pick the day and the year of birth. The link opens straight on their day, with their name in the greeting.
The link carries the name, date and place typed here; anyone who gets it can see them.
Put another birthday beside it
Your mother’s, your child’s, a friend’s: the two days appear side by side.
Below: 14 April through the years.
The whole globe of the day
Drag the globe to turn it. Touch a ray or a point to read what happened there.
Everything Wikipedia lists for 14 April
The list is the English Wikipedia’s, in its own wording, as it stood in October 2026. 15 events have no place on the map: the sentence links to no place with coordinates, only to places too wide to mark, or to several countries.
- 43 BC
Legions loyal to the Roman Senate, commanded by Gaius Pansa, defeat the forces of Mark Antony in the Battle of Forum Gallorum.
no place on the mapWikipedia: Battle of Forum Gallorum - 69
Vitellius, commanding Rhine-based armies, defeats Roman emperor Otho in the First Battle of Bedriacum to take power over Rome.
Europe · Battle of BedriacumWikipedia: Battle of Bedriacum - 966
Following his marriage to the Christian Doubravka of Bohemia, the pagan ruler of the Polans, Mieszko I, converts to Christianity, an event considered to be the founding of the Polish state.
no place on the mapWikipedia: Christianization of Poland - 972
Otto II, Co-Emperor of the Holy Roman Empire, marries Byzantine princess Theophanu. She is crowned empress by Pope John XIII in Rome the same day.
Europe · Holy Roman EmpireWikipedia: Otto II, Holy Roman Emperor - 1205
Combined Bulgarian and Cuman army under Kalojan ambushes and defeats forces of the Latin Empire of Constantinople in the Battle of Adrianople.
Asia · Battle of AdrianopleWikipedia: Battle of Adrianople - 1395
Tokhtamysh–Timur war: At the Battle of the Terek River, Timur defeats the army of the Golden Horde, beginning the khanate's permanent military decline.
Europe · Battle of the Terek RiverWikipedia: Battle of the Terek River - 1471
In England, the Yorkists under Edward IV defeat the Lancastrians under the Earl of Warwick at the Battle of Barnet; the Earl is killed and Edward resumes the throne.
Britain & Ireland · Battle of BarnetWikipedia: Battle of Barnet - 1561
A celestial phenomenon is reported over Nuremberg, described as an aerial battle.
Europe · 1561 celestial phenomenon over NurembergWikipedia: 1561 celestial phenomenon over Nuremberg - 1639
Thirty Years' War: Forces of the Holy Roman Empire and Electorate of Saxony are defeated by the Swedes at the Battle of Chemnitz, ending the military effectiveness of the Saxon army for the rest of the war and allowing the Swedes to advance into Bohemia.
Europe · Battle of ChemnitzWikipedia: Battle of Chemnitz - 1775
The Society for the Relief of Free Negroes Unlawfully Held in Bondage, the first abolition society in North America, is organized in Philadelphia by Benjamin Franklin and Benjamin Rush.
North America · PhiladelphiaWikipedia: Pennsylvania Abolition Society - 1793
The French troops led by Léger-Félicité Sonthonax defeat the slaves settlers in the Siege of Port-au-Prince.
Latin America · Siege of Port-au-PrinceWikipedia: Siege of Port-au-Prince - 1816
Bussa, a slave in British-ruled Barbados, leads a slave rebellion, for which he is remembered as the country's first national hero.
Latin America · BarbadosWikipedia: Bussa's rebellion - 1828
Lexicographer Noah Webster copyrighted the first edition of his dictionary of American English
no place on the mapWikipedia: Lexicography - 1849
Hungary declares itself independent of Austria with Lajos Kossuth as its leader.
Oceans · Hungarian Declaration of IndependenceWikipedia: Hungarian Declaration of Independence - 1858
The 1858 Christiania fire severely destroys several city blocks near Stortorvet in Christiania, Norway, and about 1,000 people lose their homes.
Europe · 1858 Christiania fireWikipedia: 1858 Christiania fire - 1865
Actor and Confederate sympathizer John Wilkes Booth fatally shot U.S. president Abraham Lincoln at Ford's Theatre in Washington, D.C.
North America · Assassination of Abraham LincolnWikipedia: Assassination of Abraham Lincoln - 1865
U.S. President Abraham Lincoln is shot in Ford's Theatre by John Wilkes Booth; Lincoln dies the following day.
North America · Assassination of Abraham LincolnWikipedia: Assassination of Abraham Lincoln - 1865
William H. Seward, the U.S. Secretary of State, and his family are attacked at home by Lewis Powell.
North America · Assassination of Abraham LincolnWikipedia: Assassination of Abraham Lincoln - 1881
The Four Dead in Five Seconds Gunfight occurs in El Paso, Texas.
Latin America · Four Dead in Five Seconds GunfightWikipedia: Four Dead in Five Seconds Gunfight - 1890
The Pan-American Union is founded by the First International Conference of American States in Washington, D.C.
no place on the mapWikipedia: Organization of American States - 1894
The first ever commercial motion picture house opens in New York City, United States. It uses ten Kinetoscopes, devices for peep-show viewing of films.
no place on the mapWikipedia: Film - 1895
The 1895 Ljubljana earthquake, both the most and last destructive earthquake in the area, occurs.
Europe · 1895 Ljubljana earthquakeWikipedia: 1895 Ljubljana earthquake - 1900
The world's fair Exposition Universelle opens in Paris.
Europe · Exposition UniverselleWikipedia: Exposition Universelle - 1906
The first meeting of the Azusa Street Revival, which will launch Pentecostalism as a worldwide movement, is held in Los Angeles.
no place on the mapWikipedia: Azusa Street Revival - 1908
Hauser Dam, a steel dam on the Missouri River in Montana, fails, sending a surge of water 25 to 30 feet (7.6 to 9.1 m) high downstream.
North America · Hauser DamWikipedia: Hauser Dam - 1909
Muslims in the Ottoman Empire begin a massacre of Armenians in Adana.
Asia · Adana massacreWikipedia: Adana massacre - 1912
The British passenger liner RMS Titanic hits an iceberg in the North Atlantic and begins to sink.
no place on the mapWikipedia: Titanic - 1929
The inaugural Monaco Grand Prix takes place in the Principality of Monaco. William Grover-Williams wins driving a Bugatti Type 35.
Europe · 1929 Monaco Grand PrixWikipedia: 1929 Monaco Grand Prix - 1931
The Second Spanish Republic is proclaimed and King Alfonso XIII goes into exile. Meanwhile, in Barcelona, Francesc Macià proclaims the Catalan Republic.
Europe · BarcelonaWikipedia: Second Spanish Republic - 1935
The Black Sunday dust storm, considered one of the worst storms of the Dust Bowl, sweeps across the Oklahoma and Texas panhandles and neighboring areas.
North America · Oklahoma panhandleWikipedia: Black Sunday - 1940
World War II: Royal Marines land in Namsos, Norway, preceding a larger force which will arrive two days later.
Europe · NamsosWikipedia: World War II - 1941
World War II: German and Italian forces attack Tobruk, Libya.
Africa · Siege of TobrukWikipedia: Siege of Tobruk - 1944
The freighter Fort Stikine, carrying cotton bales, gold and ammunition, exploded in the harbour of Bombay, India, sinking surrounding ships and causing about 800 deaths.
Asia · 1944 Bombay explosionWikipedia: 1944 Bombay explosion - 1945
World War II: In what becomes known as the Razing of Friesoythe, the 4th Canadian (Armoured) Division deliberately destroys the German town of Friesoythe on the orders of Major General Christopher Vokes.
Europe · Razing of FriesoytheWikipedia: Razing of Friesoythe - 1958
The Soviet satellite Sputnik 2 falls from orbit after a mission duration of 162 days. This was the first spacecraft to carry a living animal, a female dog named Laika, who likely lived only a few hours.
Asia · Soviet UnionWikipedia: Soviet Union - 1967
Gnassingbé Eyadéma overthrows Nicolas Grunitzky and installs himself as the new President of Togo, a title he will hold for the next 38 years.
no place on the mapWikipedia: Gnassingbé Eyadéma - 1970
After an oxygen tank aboard Apollo 13 exploded, disabling the spacecraft's electrical and life-support systems, astronaut Jack Swigert reported: "Houston, we've had a problem here".
no place on the mapWikipedia: Apollo 13 - 1978
Tbilisi demonstrations: Thousands of Georgians demonstrate against Soviet attempts to change the constitutional status of the Georgian language.
Asia · GeorgiaWikipedia: 1978 Georgian demonstrations - 1979
The Progressive Alliance of Liberia stages a protest, without a permit, against an increase in rice prices proposed by the government, with clashes between protestors and the police resulting in over 70 deaths and over 500 injuries.
no place on the mapWikipedia: Progressive Alliance of Liberia - 1981
STS-1: The first operational Space Shuttle, Columbia, completes its first test flight.
no place on the mapWikipedia: STS-1 - 1983
Let's Dance, English musician David Bowie's best-selling album, was released.
no place on the mapWikipedia: Let's Dance - 1986
The heaviest hailstones ever recorded, each weighing 1 kilogram (2.2 lb), fall on the Gopalganj district of Bangladesh, killing 92.
Asia · Gopalganj District, BangladeshWikipedia: Hail - 1988
In a United Nations ceremony in Geneva, Switzerland, the Soviet Union signs an agreement pledging to withdraw its troops from Afghanistan.
Europe · GenevaWikipedia: Geneva Accords - 1988
The USS Samuel B. Roberts strikes a mine in the Persian Gulf during Operation Earnest Will.
Asia · Persian GulfWikipedia: Operation Earnest Will - 1991
The Republic of Georgia introduces the post of President following its declaration of independence from the Soviet Union.
Asia · GeorgiaWikipedia: Georgia - 1994
In a friendly fire incident during Operation Provide Comfort in northern Iraq, two U.S. Air Force aircraft mistakenly shoot-down two U.S. Army helicopters, killing 26 people.
- 1997
Pai Hsiao-yen, daughter of Taiwanese artiste Pai Bing-bing, is kidnapped on her way to school, preceding her murder.
Asia · Taipei CountyWikipedia: Murder of Pai Hsiao-yen - 1999
A severe hailstorm strikes Sydney, Australia causing A$2.3 billion in insured damages, the most costly natural disaster in Australian history.
Oceania · 1999 Sydney hailstormWikipedia: 1999 Sydney hailstorm - 1999
NATO mistakenly bombs a convoy of ethnic Albanian refugees. Yugoslav officials say 75 people were killed.
Europe · Serbia and MontenegroWikipedia: NATO - 2001
Series of bombings at Ramna Park in Dhaka during the Bengali New Year celebrations leave 10 people dead and dozens other injured.
Asia · DhakaWikipedia: 2001 Ramna Batamul bombings - 2002
Venezuelan president Hugo Chávez returns to office two days after being ousted and arrested by the country's military.
Latin America · VenezuelaWikipedia: Venezuela - 2003
The Human Genome Project is completed with 99% of the human genome sequenced to an accuracy of 99.99%.
no place on the mapWikipedia: Human Genome Project - 2003
U.S. troops in Baghdad capture Abu Abbas, leader of the Palestinian group that killed an American on the hijacked cruise liner MS Achille Lauro in 1985.
Asia · BaghdadWikipedia: Baghdad - 2005
The Oregon Supreme Court nullifies marriage licenses issued to same-sex couples a year earlier by Multnomah County.
North America · Oregon Supreme CourtWikipedia: Oregon Supreme Court - 2006
Twin blasts triggered by crude bombs during Asr prayer in the Jama Masjid mosque in Delhi injure 13 people.
Asia · 2006 Jama Masjid bombingsWikipedia: 2006 Jama Masjid bombings - 2010
Nearly 2,700 people were killed in an earthquake registering 6.9 Mw in Yushu Tibetan Autonomous Prefecture, China.
Asia · 2010 Yushu earthquakeWikipedia: 2010 Yushu earthquake - 2010
Plumes of ash from a major eruption of the Eyjafjallajökull volcano in Iceland led to widespread disruption of air travel throughout Europe for several days.
Europe · 2010 eruptions of EyjafjallajökullWikipedia: 2010 eruptions of Eyjafjallajökull - 2014
Boko Haram abducts 276 girls from a school in Chibok, Nigeria.
Africa · Chibok schoolgirls kidnappingWikipedia: Chibok schoolgirls kidnapping - 2014
Two bombs detonate at a bus station in Nyanya, Nigeria, killing at least 88 people and injuring hundreds. Boko Haram claims responsibility.
Africa · April 2014 Nyanya bombingWikipedia: April 2014 Nyanya bombing - 2015
Western Kentucky University announced a five-year suspension of their swimming and diving programs as a result of a hazing scandal.
North America · Western Kentucky UniversityWikipedia: Western Kentucky University - 2016
The foreshock of a major earthquake occurs in Kumamoto, Japan.
Asia · 2016 Kumamoto earthquakesWikipedia: 2016 Kumamoto earthquakes - 2022
Russian invasion of Ukraine: The Russian warship Moskva is struck by two anti-ship missiles and sinks into the Black Sea.
Europe · Sinking of the MoskvaWikipedia: 2022 Russian invasion of Ukraine - 2023
The Jupiter Icy Moons Explorer (JUICE) is launched by the European Space Agency.
no place on the mapWikipedia: Jupiter Icy Moons Explorer - 2024
Flooding in the Persian Gulf starts, killing 19 in Oman.
no place on the mapWikipedia: 2024 Persian Gulf floods
Who was born on 14 April
In order of how many Wikipedia editions have an article about each. The first 60 of 237 are shown.
- 1891
B. R. Ambedkar, Indian economist, jurist, and politician, 1st Indian Minister of Law and Justice (died 1956)
Dr. Ambedkar NagarWikipedia: B. R. Ambedkar - 1126
Averroes, Andalusian Arab physician and philosopher (died 1198)
CórdobaWikipedia: Averroes - 1629
Christiaan Huygens, Dutch mathematician, astronomer, and physicist (died 1695)
The HagueWikipedia: Christiaan Huygens - 1889
Arnold J. Toynbee, English historian and academic (died 1975)
- 1906
Faisal of Saudi Arabia, Saudi Arabian king (died 1975)
- 1578
Philip III of Spain (died 1621)
- 1973
Adrien Brody, American actor
WoodhavenWikipedia: Adrien Brody - 1940
Julie Christie, Indian-English actress and activist
- 1977
Sarah Michelle Gellar, American actress
New York CityWikipedia: Sarah Michelle Gellar - 1527
Abraham Ortelius, Flemish cartographer and geographer (died 1598)
AntwerpWikipedia: Abraham Ortelius - 1921
Thomas Schelling, American economist and academic, Nobel Prize laureate (died 2016)
OaklandWikipedia: Thomas Schelling - 1907
François Duvalier, Haitian physician and politician, 40th President of Haiti (died 1971)
Port-au-PrinceWikipedia: François Duvalier - 1904
John Gielgud, English actor, director, and producer (died 2000)
South KensingtonWikipedia: John Gielgud - 1925
Rod Steiger, American soldier and actor (died 2002)
WesthamptonWikipedia: Rod Steiger - 1927
Alan MacDiarmid, New Zealand chemist and academic, Nobel Prize laureate (died 2007)
MastertonWikipedia: Alan MacDiarmid - 1935
Erich von Däniken, Swiss pseudohistorian and author (died 2026)
ZofingenWikipedia: Erich von Däniken - 1996
Abigail Breslin, American actress
New York CityWikipedia: Abigail Breslin - 1945
Ritchie Blackmore, English guitarist and songwriter
Weston-super-MareWikipedia: Ritchie Blackmore - 1868
Peter Behrens, German architect, designed the AEG turbine factory (died 1940)
HamburgWikipedia: Peter Behrens - 1882
Moritz Schlick, German-Austrian physicist and philosopher (died 1936)
- 1912
Robert Doisneau, French photographer and journalist (died 1994)
GentillyWikipedia: Robert Doisneau - 1973
Roberto Ayala, Argentinian footballer
ParanáWikipedia: Roberto Ayala - 1892
V. Gordon Childe, Australian archaeologist and philologist (died 1957)
- 1932
Loretta Lynn, American singer-songwriter and musician (died 2022)
Butcher HollowWikipedia: Loretta Lynn - 1934
Fredric Jameson, American philosopher and theorist (died 2024)
ClevelandWikipedia: Fredric Jameson - 1958
Peter Capaldi, Scottish actor
GlasgowWikipedia: Peter Capaldi - 1866
Anne Sullivan, American educator (died 1936)
Feeding HillsWikipedia: Anne Sullivan - 1961
Robert Carlyle, Scottish actor and director
GlasgowWikipedia: Robert Carlyle - 1738
William Cavendish-Bentinck, 3rd Duke of Portland, English politician, Prime Minister of the United Kingdom (died 1809)
NottinghamshireWikipedia: William Cavendish-Bentinck, 3rd Duke of Portland - 1933
Yuri Oganessian, Armenian-Russian nuclear physicist
Rostov-on-DonWikipedia: Yuri Oganessian - 1889
Efim Bogoljubow, Russian-German chess grandmaster (1889–1952)
StanislavchykWikipedia: Efim Bogoljubow - 1857
Princess Beatrice of the United Kingdom (died 1944)
Buckingham PalaceWikipedia: Princess Beatrice of the United Kingdom - 1950
Francis Collins, American physician and geneticist
StauntonWikipedia: Francis Collins - 1950
Péter Esterházy, Hungarian author (died 2016)
BudapestWikipedia: Péter Esterházy - 1975
Lita, American wrestler
Fort LauderdaleWikipedia: Lita - 1960
Brad Garrett, American actor and comedian
Woodland HillsWikipedia: Brad Garrett - 1204
Henry I, king of Castile (died 1217)
ValladolidWikipedia: Henry I of Castile - 1967
Nicola Berti, Italian international footballer
Salsomaggiore TermeWikipedia: Nicola Berti - 1975
Anderson Silva, Brazilian mixed martial artist and boxer
São PauloWikipedia: Anderson Silva - 1922
Ali Akbar Khan, Hindustani musician (died 2009)
BrahmanbariaWikipedia: Ali Akbar Khan - 1942
Valeriy Brumel, Soviet high jumper (died 2003)
TolbuzinoWikipedia: Valeriy Brumel - 1954
Katsuhiro Otomo, Japanese director, screenwriter, and illustrator
- 1968
Anthony Michael Hall, American actor
West RoxburyWikipedia: Anthony Michael Hall - 1977
Rob McElhenney, American actor, producer, and screenwriter
PhiladelphiaWikipedia: Rob McElhenney - 1886
Edward C. Tolman, American psychologist (died 1959)
West NewtonWikipedia: Edward C. Tolman - 1948
Berry Berenson, American model, actress, and photographer (died 2001)
New York CityWikipedia: Berry Berenson - 1983
James McFadden, Scottish footballer
GlasgowWikipedia: James McFadden - 1930
Bradford Dillman, American actor and author (died 2018)
San FranciscoWikipedia: Bradford Dillman - 1951
Julian Lloyd Webber, English cellist, conductor, and educator
- 1903
Henry Corbin, French philosopher and academic (died 1978)
7th arrondissement of ParisWikipedia: Henry Corbin - 1988
Anthony Modeste, French footballer
- 1936
Frank Serpico, American-Italian soldier, police officer and lecturer
BrooklynWikipedia: Frank Serpico - 1941
Pete Rose, American baseball player and manager (died 2024)
CincinnatiWikipedia: Pete Rose - 1942
Valentin Lebedev, Russian engineer and astronaut
- 1957
Mikhail Pletnev, Russian pianist, composer, and conductor
ArkhangelskWikipedia: Mikhail Pletnev - 1973
David Miller, American tenor
San DiegoWikipedia: David Miller - 1984
Charles Hamelin, Canadian speed skater
- 1986
Matt Derbyshire, English footballer
Great HarwoodWikipedia: Matt Derbyshire - 1987
Erwin Hoffer, Austrian footballer
- 1917
Valerie Hobson, English actress (died 1998)
What is celebrated on 14 April
- Ambedkar Jayanti (India)
- Bengali New Year (Bangladesh)
- Black Day (South Korea)
- Burt Gummer Day
- Cake and Cunnilingus Day
- Christian feast day: Anthony, John, and Eustathius
- Christian feast day: Bénézet
- Christian feast day: Henry Beard Delany (U.S. Episcopal Church)
- Christian feast day: Domnina of Terni
- Christian feast day: Lidwina
- Christian feast day: Peter González
- Christian feast day: Tiburtius, Valerian, and Maximus
- Christian feast day: April 14 (Eastern Orthodox liturgics)
- Commemoration of Anfal Genocide Against the Kurds (Iraqi Kurdistan)
A greeting link for someone
Type a name and, if you like, the year of birth. The link opens with a greeting, and beside each event it says how old the person turned that day, or how many years before their birth it happened.
The name and the year go only into the link you send.
All 366 days
How the globe is made
Where the events come from
Each edition of this page uses the day’s list from Wikipedia in its own language: Romanian, English, Spanish, Chinese. The lists are written by volunteers and differ from one edition to the next; the text of each event is Wikipedia’s, with a link to the article. A row that appears twice in a list is shown once. The lists have not been checked event by event: they are Wikipedia’s, mistakes included.
For events before 1582, and for countries that moved to the Gregorian calendar later (Britain in 1752, Russia in 1918), the same day may be counted Old Style in one list and New Style in another.
The chapter “What the other Wikipedias remember” adds up to five events a day from the lists of the other three editions, only for years in which the English list has nothing on that day. They were translated for this page, passed the same filters as the tour, and are not counted among the events of the English list.
How an event gets onto the map
The place comes from Wikidata. If the sentence links to the article about the event itself (a battle, an opening, an earthquake), dated to the same year, the ray stands on its coordinates or on those of its location. Otherwise it stands on the first place the sentence links to: a town, a building, a mountain, an island. This second step can be wrong: sometimes the sentence only mentions the place. That is why the page says, under each event, which place the ray stands on.
When the sentence links to a single state or province, or to a single sea, lake or desert larger than 5,000 km², the globe shows a dashed circle, not a ray. The circle has the area Wikidata gives, with its radius kept between 1.2° and 16°, or a radius of 4.5° when Wikidata gives no area; it says only that the sentence links to that place. Organisations, ships, spacecraft, museum objects, rivers, mountain ranges, languages and continents are never used as places. When a sentence names several states and no exact place, the event stays in the list only.
What the height means
The height of a ray shows how many years have passed, on a logarithmic scale: 10 years, 100 years and 1,000 years are equal steps apart; anything older than about 2,600 years has the tallest ray. The colour runs from pale yellow for recent years to violet for antiquity.
Where the tour stops
In each region the tour stops at up to three events (five in Britain and Ireland), chosen mainly by three things: whether Wikipedia’s editors put the event in the “On this day” box of their main page (the English, Spanish and Chinese editions), how many Wikipedia editions have an article about it, and how many of the four lists include it. Events whose sentence or article is about a war, an attack, a crime or a disaster are left out of the tour; they stay in the whole list, in Wikipedia’s wording. The filter is a list of words and a list of Wikidata types, so it can miss some.
The tour of births names the people with articles in the most editions and leaves aside those whom the list or Wikidata describes as rulers, politicians, commanders, leaders of movements or criminals; they stay in the list.
The Earth and the Sun
The daytime images are NASA’s Blue Marble Next Generation mosaics, one for each month of 2004; the night side is Black Marble 2016. The tilt of the line between day and night is computed for the day; the hour is chosen so that the place being read is in daylight. The latitude where the Sun stands overhead is the average of the four years of the leap cycle; in a given year it can differ by up to 0.4°.
The day you were born
The number ones come from the weekly lists on Wikipedia: Billboard for the United States (from 1940; the Hot 100 from August 1958), the UK Singles Chart (from November 1952), Los 40 Principales for Spain (from July 1966) and, for Romania, the Romanian Top 100 and Airplay 100 (2001–2021, with missing weeks). The page shows the chart of the week in which the day of birth falls, with its date; Billboard and the UK chart are dated at the end of their week. For Romania before 2001 and for China these sources have no weekly chart.
The films are those that reached cinemas in the United States up to ten days before or three days after that day (some of them in a few cinemas at first), from the English Wikipedia’s yearly lists (from 1968), in order of how many editions have an article about them. The events “in those days” are the ones on the neighbouring days’ lists that carry the year of birth, passed through the same filter as the tour.
The day of birth, year included
The Moon, the star sign and the constellation are worked out by the page itself, for noon Universal Time on the day. The lit part of the Moon is rounded and can differ by a few per cent from that at the hour of birth. The sign follows the usual zodiac of twelve equal parts starting at the March equinox; the constellation is the one the Sun actually stood in front of, by the borders set by the International Astronomical Union, and within a day of a border the page does not name it. When the Sun changes sign while it is that day anywhere on Earth, the page gives the moment of crossing, rounded to ten minutes and accurate to within about a quarter of an hour, and the clock time in a few cities, with the time zone and summer time of that year.
The year in the Chinese calendar is the one your device’s own calendar gives for the date, checked against the Hong Kong Observatory’s tables. “All your birthdays” uses the same sources as the rest of the chapter for the same day in every year since the birth: the temperature, well-known launches that took place on that very day, matches of the teams the edition follows, snow deeper than 10 cm and strong geomagnetic storms. The three things at the top and the four on the picture are chosen in a fixed order (the song, the animal, a full Moon, a well-known launch before an ordinary earthquake); on the picture you can change them.
When the link carries a year of birth, the page adds a few things about that exact day. The weather is the Met Office’s Central England temperature record and the readings from New York’s Central Park; the “usual high” is the average of the daily highs of 1961–1990 for that date, with two days either side. The carbon dioxide figure is the monthly mean at the Mauna Loa observatory, where measurements begin in March 1958.
The earthquake is the one with the largest magnitude in the USGS catalogue for that day, counted in Universal Time. Before the 1960s the catalogue has gaps even above magnitude 5.5, so in the older years many days have no earthquake. The page gives only the magnitude and the place: the country the epicentre falls in or, when the epicentre is at sea within 300 km of a coast, the nearest country; farther out, only the ocean.
The launches are those that reached orbit or left for the Moon and the planets, from Jonathan McDowell’s GCAT catalogue. If nothing left that day, the page shows the nearest launch within three days before or after, and says how many days away it was. The geomagnetic storm appears only when the Kp index reached at least 5 in one of the day’s eight three-hour intervals.
The animal comes from GBIF: an observation made by a person (the animal seen or heard, or its tracks), dated to that exact day, with coordinates and a CC0 or CC BY licence. Only a few hundred well-known species are searched (mammals, birds, turtles, butterflies); of those noted that day, mammals and species with articles in many Wikipedia editions come first; birds noted almost every day, and species used recently, wait their turn. Observations dated 1 January are left out, because records without a day are often filed there. An observation shows that the animal was recorded there, not how many animals there were.
The matches are those between national teams. Only matches of England, Scotland, Wales, Northern Ireland, the Republic of Ireland, the United States, Canada and Australia are shown, along with those at the big final tournaments. The picture to send is drawn in the page from the day’s globe and the facts above, and stays on your device until you send it.
Sources
- Events, births and holidays: the day’s page on Wikipedia, text under CC BY-SA 4.0.
- Coordinates, places of birth and the number of editions: Wikidata (CC0).
- The Earth by day: NASA Blue Marble Next Generation. The Earth by night: NASA Black Marble 2016.
- Borders and regions: Natural Earth.
- World population and births per year: UN World Population Prospects 2024.
- Charts and films: Wikipedia’s lists for Billboard, the UK Singles Chart, Los 40 Principales, Romanian Top 100, Airplay 100 and American films by year (CC BY-SA 4.0).
- Weather: Met Office Hadley Centre, HadCET (Open Government Licence) and NOAA GHCN-Daily, New York Central Park. Carbon dioxide: NOAA Global Monitoring Laboratory, Mauna Loa.
- Earthquakes: the USGS catalogue. Launches: Jonathan McDowell, GCAT (CC BY). Kp index: GFZ Potsdam (CC BY 4.0). Matches: International football results, Mart Jürisoo (CC0).
- Animal observations: GBIF, with a link to each record; species names come from Wikidata.