A day on the globeROENES中文
The Earth on 24 January, with the rays of the day’s events
  1. A birthday on the globe

    24 January on the globe: what happened in the world on this day, and who was born

    For 24 January, the English Wikipedia lists 44 events and 205 births. 21 of the events stand at their places as rays of light; two 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:

  2. The Earth on 24 January

    The picture on the globe was assembled by NASA from satellite photographs taken in January 2004: the snow, the ice and the green are those of the month.

    On 24 January the Sun passes straight overhead at noon along the parallel of 19.3° south. In London, the day lasts about 8 hours 45 minutes.

    Beyond 71° south the Sun no longer sets; beyond 71° north 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.

  3. 24 January

    Europe#

    Seven events from the day’s list are placed here, between 1438 and 2024.

    The globe stops at one of them; the whole list is further down. All seven

  4. Europe · Council of Florence

    1438

    The Council of Basel suspends Pope Eugene IV.

    On the map: Council of Florence.

    Also on the day’s list of Wikipedia in Spanish.

    Wikipedia: Council of Florence

  5. 24 January

    Asia#

    Five events from the day’s list are placed here, between 1857 and 2026.

    The globe stops at one of them; the whole list is further down. All five

  6. Asia · University of Calcutta

    1857

    The University of Calcutta is formally founded as the first fully fledged university in South Asia.

    On the map: University of Calcutta.

    Also on the day’s list of Wikipedia in Spanish.

    Wikipedia: University of Calcutta

  7. 24 January

    Latin America and the Caribbean#

    Three events from the day’s list are placed here, between 771 and 1939.

    The globe stops at one of them; the whole list is further down. All three

  8. Latin America · Quiriguá

    771

    Kʼakʼ Tiliw Chan Yopaat dedicated a 65-ton stele, the largest stone known to be quarried by the Maya civilization, at his city of Quiriguá.

    On the map: Quiriguá.

    Also on the day’s list of Wikipedia in Chinese.

    Wikipedia: Kʼakʼ Tiliw Chan Yopaat

  9. 24 January

    North America#

    Four events from the day’s list are placed here, between 1848 and 1987.

    The globe stops at two of them; the whole list is further down. All four

  10. North America · California gold rush

    1848

    California Gold Rush: James W. Marshall finds gold at Sutter's Mill near Sacramento.

    On the map: California gold rush.

    Also on the day’s list of Wikipedia in Spanish, Romanian and Chinese.

    Wikipedia: California gold rush

  11. North America · Supreme Court of the United States

    1916

    In Brushaber v. Union Pacific Railroad Co., the Supreme Court of the United States declares the federal income tax constitutional.

    On the map: Supreme Court of the United States.

    Also on the day’s list of Wikipedia in Spanish.

    Wikipedia: Supreme Court of the United States

  12. 24 January

    What the other Wikipedias remember#

    For these years the English list has nothing on this day. The events below come from the same day’s lists on Wikipedia in Spanish and Chinese and were translated for this page.

  13. From Wikipedia in Spanish · Tuamotus

    1521

    In the Tuamotu archipelago, Ferdinand Magellan discovers the island of San Pablo.

    On the map: Tuamotus.

    Translated from the list on Wikipedia in Spanish.

    The article on Wikipedia in Spanish: Isla de San Pablo

  14. From Wikipedia in Chinese · Saint Petersburg

    1924

    After the death of Vladimir Lenin, the Soviet government renames Petrograd, built by Peter the Great, as "Leningrad".

    On the map: Saint Petersburg.

    Translated from the list on Wikipedia in Chinese.

    The article on Wikipedia in Chinese: 彼得大帝

  15. From Wikipedia in Spanish · New York City

    1983

    The American tennis player John McEnroe beats the Czech Ivan Lendl and is proclaimed champion of the Masters tournament held in New York.

    On the map: New York City.

    Translated from the list on Wikipedia in Spanish.

    The article on Wikipedia in Spanish: ATP Finals

  16. 24 January

    Born on 24 January#

    The English Wikipedia lists 205 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.

  17. Born on 24 January

    1987

    Luis Suárez, Uruguayan footballer

    Place of birth: Salto.

    Wikipedia: Luis Suárez

  18. Born on 24 January

    1732

    Pierre Beaumarchais, French playwright and financier (died 1799)

    Place of birth: rue Saint-Denis.

    Wikipedia: Pierre-Augustin de Beaumarchais

  19. Born on 24 January

    1776

    E. T. A. Hoffmann, German jurist, author, and composer (died 1822)

    Place of birth: Königsberg.

    Wikipedia: E. T. A. Hoffmann

  20. Born on 24 January

    1862

    Edith Wharton, American novelist and short story writer (died 1937)

    Place of birth: New York City.

    Wikipedia: Edith Wharton

  21. Born on 24 January

    1917

    Ernest Borgnine, American actor (died 2012)

    Place of birth: Hamden.

    Wikipedia: Ernest Borgnine

  22. Born in Britain and Ireland

    1928

    Desmond Morris, English zoologist, ethologist, and painter (died 2026)

    Place of birth: Purton.

    Wikipedia: Desmond Morris

  23. Born in Britain and Ireland

    1986

    Mischa Barton, English-American actress

    Place of birth: Hammersmith.

    Wikipedia: Mischa Barton

  24. Born in Britain and Ireland

    1670

    William Congreve, English playwright and poet (died 1729)

    Place of birth: Leeds.

    Wikipedia: William Congreve

  25. 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 24 January

The list is the English Wikipedia’s, in its own wording, as it stood in October 2026. 21 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.

  1. 41

    Claudius is proclaimed Roman emperor by the Praetorian Guard after they assassinate the previous emperor, his nephew Caligula.

    no place on the mapWikipedia: Claudius
  2. 771

    Kʼakʼ Tiliw Chan Yopaat dedicated a 65-ton stele, the largest stone known to be quarried by the Maya civilization, at his city of Quiriguá.

    Latin America · QuiriguáWikipedia: Kʼakʼ Tiliw Chan Yopaat
  3. 914

    Start of the First Fatimid invasion of Egypt.

  4. 1438

    The Council of Basel suspends Pope Eugene IV.

    Europe · Council of FlorenceWikipedia: Council of Florence
  5. 1458

    Matthias Corvinus is elected King of Hungary.

    no place on the mapWikipedia: Matthias Corvinus
  6. 1536

    King Henry VIII of England suffers an accident while jousting, leading to a brain injury that historians say may have influenced his later erratic behaviour and possible impotence.

    no place on the mapWikipedia: Henry VIII
  7. 1651

    Arauco War: Spanish and Mapuche authorities meet in the Parliament of Boroa renewing the fragile peace established at the parliaments of Quillín in 1641 and 1647.

    no place on the mapWikipedia: Arauco War
  8. 1679

    King Charles II of England dissolves the Cavalier Parliament.

  9. 1742

    Charles VII Albert becomes Holy Roman Emperor.

  10. 1758

    During the Seven Years' War the leading burghers of Königsberg submit to Elizabeth of Russia, thus forming Russian Prussia (until 1763).

    Europe · KönigsbergWikipedia: Seven Years' War
  11. 1817

    Crossing of the Andes: Many soldiers of Juan Gregorio de las Heras are captured during the action of Picheuta.

  12. 1835

    Slaves in Salvador da Bahia, Brazil, stage a revolt, which is instrumental in ending slavery there 50 years later.

    Latin America · SalvadorWikipedia: Malê revolt
  13. 1848

    California Gold Rush: James W. Marshall finds gold at Sutter's Mill near Sacramento.

    North America · California gold rushWikipedia: California gold rush
  14. 1857

    The University of Calcutta is formally founded as the first fully fledged university in South Asia.

    Asia · University of CalcuttaWikipedia: University of Calcutta
  15. 1859

    The United Principalities of Moldavia and Wallachia (later named Romania) is formed as a personal union under the rule of Domnitor Alexandru Ioan Cuza.

  16. 1900

    Second Boer War: Boers stop a British attempt to break the Siege of Ladysmith in the Battle of Spion Kop.

    Africa · Siege of LadysmithWikipedia: Second Boer War
  17. 1908

    The first Boy Scout troop is organized in England by Robert Baden-Powell.

    no place on the mapWikipedia: Scouting
  18. 1913

    Greek military aviators Michael Moutoussis and Aristeidis Moraitinis performed the first naval air mission in history, with a Farman MF.7 hydroplane.

  19. 1915

    World War I: British Grand Fleet battle cruisers under Vice-Admiral Sir David Beatty engage Rear-Admiral Franz von Hipper's battle cruisers in the Battle of Dogger Bank.

    Oceans · Battle of Dogger BankWikipedia: World War I
  20. 1916

    In Brushaber v. Union Pacific Railroad Co., the Supreme Court of the United States declares the federal income tax constitutional.

    North America · Supreme Court of the United StatesWikipedia: Supreme Court of the United States
  21. 1918

    The Gregorian calendar is introduced in Russia by decree of the Council of People's Commissars effective February 14 (New Style).

  22. 1933

    The 20th Amendment to the United States Constitution is ratified, changing the beginning and end of terms for all elected federal offices.

  23. 1935

    Gottfried Krueger Brewing Company starts selling the first canned beer.

  24. 1939

    The deadliest earthquake in Chilean history strikes Chillán, killing approximately 28,000 people.

    Latin America · 1939 Chillán earthquakeWikipedia: 1939 Chillán earthquake
  25. 1942

    World War II: The Allies bombard Bangkok, leading Thailand, then under Japanese control, to declare war against the United States and United Kingdom.

  26. 1943

    World War II: Franklin D. Roosevelt and Winston Churchill conclude a conference in Casablanca.

  27. 1946

    The United Nations General Assembly passes its first resolution to establish the United Nations Atomic Energy Commission.

  28. 1960

    Algerian War: Some units of European volunteers in Algiers stage an insurrection known as the "barricades week", during which they seize government buildings and clash with local police.

    Africa · AlgiersWikipedia: Algerian War
  29. 1961

    Goldsboro B-52 crash: A bomber carrying two H-bombs breaks up in mid-air over North Carolina. The uranium core of one weapon remains lost.

    North America · 1961 Goldsboro B-52 crashWikipedia: 1961 Goldsboro B-52 crash
  30. 1966

    Air India Flight 101 crashes into Mont Blanc.

    Europe · Air India Flight 101Wikipedia: Air India Flight 101
  31. 1968

    Vietnam War: The 1st Australian Task Force launches Operation Coburg against the North Vietnamese Army and Viet Cong during wider fighting around Long Bình and Biên Hòa.

    Asia · Operation CoburgWikipedia: Vietnam War
  32. 1972

    Japanese Sgt. Shoichi Yokoi is found hiding in a Guam jungle, where he had been since the end of World War II.

    Oceania · GuamWikipedia: Shoichi Yokoi
  33. 1977

    The Atocha massacre occurs in Madrid during the Spanish transition to democracy.

    Europe · 1977 Atocha massacreWikipedia: 1977 Atocha massacre
  34. 1978

    Soviet satellite Kosmos 954, with a nuclear reactor on board, burns up in Earth's atmosphere, scattering radioactive debris over Canada's Northwest Territories. Only 1% is recovered.

    no place on the mapWikipedia: Soviet Union
  35. 1986

    The Voyager 2 space probe makes its closest approach to Uranus.

    no place on the mapWikipedia: Voyager 2
  36. 1987

    About 20,000 protestors march in a civil rights demonstration in Forsyth County, Georgia, United States.

    North America · 1987 Forsyth County protestsWikipedia: 1987 Forsyth County protests
  37. 1988

    An Aeroflot Yakovlev Yak-40 crashes at Nizhnevartovsk Airport, killing 27 people.

    Asia · Nizhnevartovsk AirportWikipedia: Aeroflot
  38. 1990

    Japan launches Hiten, the country's first lunar probe, the first robotic lunar probe since the Soviet Union's Luna 24 in 1976, and the first lunar probe launched by a country other than Soviet Union or the United States.

    Asia · Soviet UnionWikipedia: Hiten
  39. 2003

    The United States Department of Homeland Security officially begins operation.

  40. 2009

    Cyclone Klaus makes landfall near Bordeaux, France, causing 26 deaths as well as extensive disruptions to public transport and power supplies.

    Europe · BordeauxWikipedia: Cyclone Klaus
  41. 2011

    At least 35 are killed and 180 injured in a bombing at Moscow's Domodedovo Airport.

    Europe · Domodedovo International Airport bombingWikipedia: Domodedovo International Airport bombing
  42. 2018

    Former doctor Larry Nassar is sentenced up to 175 years in prison after being found guilty of using his position to sexually abuse female gymnasts.

    no place on the mapWikipedia: Larry Nassar
  43. 2024

    An Ilyushin Il-76 crashes in Russia's Korochansky District, killing all 74 people on board.

    Europe · 2024 Korochansky Ilyushin Il-76 crashWikipedia: 2024 Korochansky Ilyushin Il-76 crash
  44. 2026

    At least 70 people are killed and 10 others missing after major landslides in West Java, Indonesia.

    Asia · 2026 West Bandung landslideWikipedia: 2026 West Bandung landslide

What the other Wikipedias remember

For these years the English list has nothing on this day. The events below come from the same day’s lists on Wikipedia in Spanish and Chinese and were translated for this page.

  1. 1521

    In the Tuamotu archipelago, Ferdinand Magellan discovers the island of San Pablo.

    Oceania · TuamotusTranslated from the list on Wikipedia in SpanishWikipedia: Isla de San Pablo
  2. 1924

    After the death of Vladimir Lenin, the Soviet government renames Petrograd, built by Peter the Great, as "Leningrad".

    Europe · Saint PetersburgTranslated from the list on Wikipedia in ChineseWikipedia: 彼得大帝
  3. 1983

    The American tennis player John McEnroe beats the Czech Ivan Lendl and is proclaimed champion of the Masters tournament held in New York.

    North America · New York CityTranslated from the list on Wikipedia in SpanishWikipedia: ATP Finals

Who was born on 24 January

In order of how many Wikipedia editions have an article about each. The first 60 of 205 are shown.

  1. 1712

    Frederick the Great, Prussian king (died 1786)

    BerlinWikipedia: Frederick the Great
  2. 1987

    Luis Suárez, Uruguayan footballer

    SaltoWikipedia: Luis Suárez
  3. 76

    Hadrian, Roman emperor (died 138)

    ItalicaWikipedia: Hadrian
  4. 1953

    Moon Jae-in, South Korean politician, 19th President of South Korea

    GeojeWikipedia: Moon Jae-in
  5. 1940

    Joachim Gauck, German pastor and politician, 11th President of Germany

    RostockWikipedia: Joachim Gauck
  6. 1732

    Pierre Beaumarchais, French playwright and financier (died 1799)

    rue Saint-DenisWikipedia: Pierre-Augustin de Beaumarchais
  7. 1776

    E. T. A. Hoffmann, German jurist, author, and composer (died 1822)

    KönigsbergWikipedia: E. T. A. Hoffmann
  8. 1862

    Edith Wharton, American novelist and short story writer (died 1937)

    New York CityWikipedia: Edith Wharton
  9. 1917

    Ernest Borgnine, American actor (died 2012)

    HamdenWikipedia: Ernest Borgnine
  10. 1947

    Michio Kaku, American physicist and academic

    San JoseWikipedia: Michio Kaku
  11. 1941

    Dan Shechtman, Israeli chemist and academic, Nobel Prize laureate

    Tel AvivWikipedia: Dan Shechtman
  12. 1943

    Sharon Tate, American model and actress (died 1969)

    DallasWikipedia: Sharon Tate
  13. 1961

    Nastassja Kinski, German-American actress and producer

    West BerlinWikipedia: Nastassja Kinski
  14. 1679

    Christian Wolff, German philosopher and academic (died 1754)

    WrocławWikipedia: Christian Wolff
  15. 1746

    Gustav III of Sweden (died 1792)

    The Royal Court ParishWikipedia: Gustav III
  16. 1941

    Neil Diamond, American singer-songwriter and guitarist

    BrooklynWikipedia: Neil Diamond
  17. 1949

    John Belushi, American actor and screenwriter (died 1982)

    Humboldt ParkWikipedia: John Belushi
  18. 1950

    Daniel Auteuil, French actor, director, and screenwriter

    AlgiersWikipedia: Daniel Auteuil
  19. 1891

    Walter Model, German field marshal (died 1945)

    GenthinWikipedia: Walter Model
  20. 1848

    Vasily Surikov, Russian painter (died 1916)

    KrasnoyarskWikipedia: Vasily Surikov
  21. 1961

    Guido Buchwald, German footballer and manager

    West BerlinWikipedia: Guido Buchwald
  22. 1888

    Vicki Baum, Austrian author and screenwriter (died 1960)

    ViennaWikipedia: Vicki Baum
  23. 1928

    Desmond Morris, English zoologist, ethologist, and painter (died 2026)

    PurtonWikipedia: Desmond Morris
  24. 1970

    Matthew Lillard, American actor

    LansingWikipedia: Matthew Lillard
  25. 1986

    Mischa Barton, English-American actress

    HammersmithWikipedia: Mischa Barton
  26. 1670

    William Congreve, English playwright and poet (died 1729)

    LeedsWikipedia: William Congreve
  27. 1967

    Phil LaMarr, American actor and comedian

    Los AngelesWikipedia: Phil LaMarr
  28. 1916

    Rafael Caldera, Venezuelan lawyer and politician, 65th President of Venezuela (died 2009)

    San FelipeWikipedia: Rafael Caldera
  29. 1989

    Ki Sung-yueng, South Korean footballer

    GwangjuWikipedia: Ki Sung-yueng
  30. 1705

    Farinelli, Italian castrato singer (died 1782)

    AndriaWikipedia: Farinelli
  31. 1978

    Kristen Schaal, American actress, voice artist, comedian and writer

    LongmontWikipedia: Kristen Schaal
  32. 1979

    Tatyana Ali, American actress and singer

    North BellmoreWikipedia: Tatyana Ali
  33. 1664

    John Vanbrugh, English architect and dramatist (died 1726)

    City of LondonWikipedia: John Vanbrugh
  34. 1749

    Charles James Fox, English businessman and politician, Secretary of State for Foreign and Commonwealth Affairs (died 1806)

    WestminsterWikipedia: Charles James Fox
  35. 1928

    Michel Serrault, French actor (died 2007)

    BrunoyWikipedia: Michel Serrault
  36. 1907

    Maurice Couve de Murville, French soldier and politician, Prime Minister of France (died 1999)

  37. 1925

    Maria Tallchief, American ballerina and actress (died 2013)

    FairfaxWikipedia: Maria Tallchief
  38. 1981

    Carrie Coon, American actress

    Copley TownshipWikipedia: Carrie Coon
  39. 1886

    Henry King, American actor, director, producer, and screenwriter (died 1982)

    ChristiansburgWikipedia: Henry King
  40. 1931

    Lars Hörmander, Swedish mathematician and academic (died 2012)

    MjällbyWikipedia: Lars Hörmander
  41. 1959

    Michel Preud'homme, Belgian footballer and manager

    OugréeWikipedia: Michel Preud'homme
  42. 1974

    Ed Helms, American actor, producer, and screenwriter

    AtlantaWikipedia: Ed Helms
  43. 1444

    Galeazzo Maria Sforza, Duke of Milan (died 1476)

    FermoWikipedia: Galeazzo Maria Sforza
  44. 1989

    Gong Lijiao, Chinese shot putter

    Luquan DistrictWikipedia: Gong Lijiao
  45. 1947

    Giorgio Chinaglia, Italian footballer (died 2012)

    CarraraWikipedia: Giorgio Chinaglia
  46. 1972

    Beth Hart, American singer-songwriter and musician

    Los AngelesWikipedia: Beth Hart
  47. 1977

    Michelle Hunziker, Swiss-Dutch actress, model and singer

    SorengoWikipedia: Michelle Hunziker
  48. 1983

    Shaun Maloney, Scottish footballer

    MiriWikipedia: Shaun Maloney
  49. 1888

    Ernst Heinkel, German engineer and businessman, founded the Heinkel Aircraft Manufacturing Company (died 1958)

    Grunbach stationWikipedia: Ernst Heinkel
  50. 1968

    Mary Lou Retton, American gymnast

    FairmontWikipedia: Mary Lou Retton
  51. 1983

    Scott Speed, American race car driver

    MantecaWikipedia: Scott Speed
  52. 1547

    Joanna of Austria, Grand Duchess of Tuscany, Austrian Archduchess (died 1578)

  53. 1864

    Marguerite Durand, French actress, journalist, and activist (died 1936)

    8th arrondissement of ParisWikipedia: Marguerite Durand
  54. 1955

    Alan Sokal, American physicist and author

    Wikipedia: Alan Sokal
  55. 1926

    Georges Lautner, French director and screenwriter (died 2013)

    NiceWikipedia: Georges Lautner
  56. 1967

    Michael Kiske, German singer

    HamburgWikipedia: Michael Kiske
  57. 1684

    Charles Alexander, Duke of Württemberg, German noble (died 1737)

  58. 1953

    Yuri Bashmet, Russian violinist, viola player, and conductor

    Rostov-on-DonWikipedia: Yuri Bashmet
  59. 1966

    Karin Viard, French actress

    RouenWikipedia: Karin Viard
  60. 1915

    Robert Motherwell, American painter and academic (died 1991)

    AberdeenWikipedia: Robert Motherwell

What is celebrated on 24 January

  • Christian feast day: Babylas of Antioch
  • Christian feast day: Exuperantius of Cingoli
  • Christian feast day: Felician of Foligno
  • Christian feast day: Francis de Sales
  • Christian feast day: Blessed Marie Poussepin
  • Christian feast day: Pratulin Martyrs (Greek Catholic Church)
  • Christian feast day: January 24 (Eastern Orthodox liturgics)
  • Day of the Unification of the Romanian Principalities (Romania)
  • Feast of Our Lady of Peace (Roman Catholic Church), and its related observances: Feria de Alasitas (La Paz)
  • Uttar Pradesh Day (Uttar Pradesh, India)
  • National Girl Child Day (India)

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.

Download the day’s picture

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

More pages about birthdays