A day on the globeROENES中文
The Earth on 8 April, with the rays of the day’s events
  1. A birthday on the globe

    8 April on the globe: what happened in the world on this day, and who was born

    For 8 April, the English Wikipedia lists 46 events and 242 births. 23 of the events stand at their places as rays of light; three 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 8 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 8 April the Sun passes straight overhead at noon along the parallel of 7.4° north. In London, the day lasts about 13 hours 25 minutes.

    Beyond 83° north the Sun no longer sets; beyond 83° 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.

  3. 8 April

    Europe#

    Five events from the day’s list are placed here, between 1605 and 2010.

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

  4. Europe · Turku

    1812

    Czar Alexander I, the Russian Emperor and the Grand Duke of Finland, officially announces the transfer of the status of the Finnish capital from Turku to Helsinki.

    On the map: Turku.

    Wikipedia: Alexander I of Russia

  5. Europe · Milos

    1820

    The Venus de Milo is discovered on the Aegean island of Milos.

    On the map: Milos.

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

    Wikipedia: Milos

  6. Europe · Prague

    2010

    U.S. President Barack Obama and Russian President Dmitry Medvedev sign the New START Treaty.

    On the map: Prague.

    Wikipedia: New START

  7. 8 April

    Latin America and the Caribbean#

    One event from the day’s list is placed here, in 2024.

  8. Latin America · Solar eclipse of April 8, 2024

    2024

    Solar eclipse: A total solar eclipse takes place at the Moon's ascending node, visible across North America.

    On the map: the coordinates Wikidata gives for the article “Solar eclipse of April 8, 2024”.

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

    Wikipedia: Solar eclipse of April 8, 2024

  9. 8 April

    North America#

    Nine events from the day’s list are placed here, between 1630 and 1975.

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

  10. North America · Albany, New York

    1630

    Kiliaen van Rensselaer purchased land near present-day Albany, New York, to establish Rensselaerswyck, which became the most successful patroonship under the Dutch West India Company.

    On the map: Albany, New York.

    Wikipedia: Kiliaen van Rensselaer

  11. North America · Supreme Court of the United States

    1895

    In Pollock v. Farmers' Loan & Trust Co. the Supreme Court of the United States declares unapportioned income tax to be unconstitutional.

    On the map: Supreme Court of the United States.

    Wikipedia: Supreme Court of the United States

  12. North America · Midtown Manhattan

    1904

    Longacre Square in Midtown Manhattan was renamed Times Square after the New York Times building.

    On the map: Midtown Manhattan.

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

    Wikipedia: Midtown Manhattan

  13. 8 April

    The open ocean and Antarctica#

    One event from the day’s list is placed here, in 2005.

  14. Oceans · Solar eclipse of April 8, 2005

    2005

    A solar eclipse occurs, visible over areas of the Pacific Ocean and Latin American countries such as Costa Rica, Panama, Colombia and Venezuela.

    On the map: the coordinates Wikidata gives for the article “Solar eclipse of April 8, 2005”.

    Wikipedia: Solar eclipse of April 8, 2005

  15. 8 April

    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 Romanian and were translated for this page.

  16. From Wikipedia in Romanian · Belgrade

    1999

    Thousands of people form human shields on three bridges in Belgrade and Novi Sad to protect them against NATO air raids.

    On the map: Belgrade.

    Translated from the list on Wikipedia in Romanian.

    The article on Wikipedia in Romanian: NATO

  17. 8 April

    Born on 8 April#

    The English Wikipedia lists 242 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.

  18. Born on 8 April

    1892

    Mary Pickford, Canadian-American actress, producer, screenwriter and co-founder of United Artists (died 1979)

    Place of birth: Toronto.

    Wikipedia: Mary Pickford

  19. Born on 8 April

    1859

    Edmund Husserl, German Jewish-Austrian mathematician and philosopher (died 1938)

    Place of birth: Prostějov.

    Wikipedia: Edmund Husserl

  20. Born on 8 April

    1911

    Emil Cioran, Romanian-French philosopher and academic (died 1995)

    Place of birth: Rășinari.

    Wikipedia: Emil Cioran

  21. Born on 8 April

    1929

    Jacques Brel, Belgian singer-songwriter and actor (died 1978)

    Wikipedia: Jacques Brel

  22. Born on 8 April

    1911

    Melvin Calvin, American chemist and academic, Nobel Prize laureate (died 1997)

    Place of birth: Saint Paul.

    Wikipedia: Melvin Calvin

  23. Born in Britain and Ireland

    1941

    Vivienne Westwood, English fashion designer (died 2022)

    Place of birth: Hollingworth.

    Wikipedia: Vivienne Westwood

  24. Born in Britain and Ireland

    1904

    John Hicks, English economist and academic, Nobel Prize laureate (died 1989)

    Place of birth: Leamington Spa.

    Wikipedia: John Hicks

  25. Born in Britain and Ireland

    1963

    Julian Lennon, English singer-songwriter

    Place of birth: Liverpool.

    Wikipedia: Julian Lennon

  26. 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 8 April

The list is the English Wikipedia’s, in its own wording, as it stood in October 2026. 20 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. 217

    Roman emperor Caracalla is assassinated and is succeeded by his Praetorian Guard prefect, Marcus Opellius Macrinus.

    no place on the mapWikipedia: Roman emperor
  2. 876

    The Battle of Dayr al-'Aqul saves Baghdad from the Saffarids.

    Asia · Battle of Dayr al-AqulWikipedia: Battle of Dayr al-Aqul
  3. 1139

    Roger II of Sicily is excommunicated by Innocent II for supporting Anacletus II as pope for seven years, even though Roger had already publicly recognized Innocent's claim to the papacy.

  4. 1143

    Manuel I Komnenos succeeds his father John II Komnenos as Byzantine Emperor.

    no place on the mapWikipedia: Manuel I Komnenos
  5. 1232

    Mongol–Jin War: The Mongols begin their siege on Kaifeng, the capital of the Jin dynasty.

    Asia · Siege of KaifengWikipedia: Siege of Kaifeng
  6. 1250

    Seventh Crusade: Ayyubids of Egypt capture King Louis IX of France in the Battle of Fariskur.

    Africa · Battle of FariskurWikipedia: Battle of Fariskur
  7. 1271

    Fall of Krak des Chevaliers: In Syria, sultan Baibars conquers the Krak des Chevaliers.

    Asia · Fall of Krak des ChevaliersWikipedia: Fall of Krak des Chevaliers
  8. 1605

    The city of Oulu, Finland, is founded by Charles IX of Sweden.

    Europe · OuluWikipedia: Oulu
  9. 1630

    Kiliaen van Rensselaer purchased land near present-day Albany, New York, to establish Rensselaerswyck, which became the most successful patroonship under the Dutch West India Company.

    North America · Albany, New YorkWikipedia: Kiliaen van Rensselaer
  10. 1730

    Shearith Israel, the first synagogue in continental North America, is dedicated.

    North America · Congregation Shearith IsraelWikipedia: Congregation Shearith Israel
  11. 1812

    Czar Alexander I, the Russian Emperor and the Grand Duke of Finland, officially announces the transfer of the status of the Finnish capital from Turku to Helsinki.

    Europe · TurkuWikipedia: Alexander I of Russia
  12. 1820

    The Venus de Milo is discovered on the Aegean island of Milos.

    Europe · MilosWikipedia: Milos
  13. 1832

    Black Hawk War: Around 300 United States 6th Infantry troops leave St. Louis, Missouri to fight the Sauk Native Americans.

    North America · St. LouisWikipedia: Black Hawk War
  14. 1864

    American Civil War: Late-arriving reinforcements helped Confederate forces rout the Union Army at the Battle of Mansfield.

    North America · Battle of MansfieldWikipedia: American Civil War
  15. 1866

    Austro-Prussian War: Italy and Prussia sign a secret alliance against the Austrian Empire.

  16. 1886

    William Ewart Gladstone introduces the first Irish Home Rule Bill into the British House of Commons.

  17. 1895

    In Pollock v. Farmers' Loan & Trust Co. the Supreme Court of the United States declares unapportioned income tax to be unconstitutional.

    North America · Supreme Court of the United StatesWikipedia: Supreme Court of the United States
  18. 1904

    Longacre Square in Midtown Manhattan was renamed Times Square after the New York Times building.

    North America · Midtown ManhattanWikipedia: Midtown Manhattan
  19. 1904

    The French Third Republic and the United Kingdom of Great Britain and Ireland sign the Entente cordiale.

    no place on the mapWikipedia: Entente Cordiale
  20. 1911

    American cartoonist Winsor McCay released the silent short film Little Nemo (featured), one of the earliest animated films.

    no place on the mapWikipedia: Winsor McCay
  21. 1917

    World War I: German naval officer Wilhelm Werner murdered 19 captured crew members of the British cargo ship Torrington by submerging U-55 when they were on deck.

    no place on the mapWikipedia: World War I
  22. 1933

    The Australian state of Western Australia votes to secede from the federation in a non-binding referendum, although efforts to implement the result prove unsuccessful.

    Oceania · Western AustraliaWikipedia: 1933 Western Australian secession referendum
  23. 1940

    The Central Committee of the Mongolian People's Revolutionary Party elects Yumjaagiin Tsedenbal as General Secretary, marking the beginning of his 44-year-long tenure as de facto leader of Mongolia.

  24. 1942

    World War II: The United States Army Air Forces flew its first mission from India over the Hump (the eastern end of the Himalayas) to deliver materiel to China.

    Asia · HimalayasWikipedia: The Hump
  25. 1943

    Otto and Elise Hampel were executed in Berlin for performing acts of resistance against Nazism.

  26. 1954

    A Royal Canadian Air Force Canadair Harvard collides with a Trans-Canada Airlines Canadair North Star over Moose Jaw, Saskatchewan, killing 37 people.

    North America · Moose JawWikipedia: Trans-Canada Air Lines Flight 9
  27. 1954

    South African Airways Flight 201: A de Havilland DH.106 Comet 1 crashes into the sea during night killing 21 people.

    Europe · South African Airways Flight 201Wikipedia: South African Airways Flight 201
  28. 1959

    A team of computer manufacturers, users, and university people led by Grace Hopper meets to discuss the creation of a new programming language that would be called COBOL.

    no place on the mapWikipedia: Grace Hopper
  29. 1959

    The Organization of American States drafts an agreement to create the Inter-American Development Bank.

  30. 1960

    The Netherlands and West Germany sign an agreement to negotiate the return of German land annexed by the Dutch in return for 280 million German marks as Wiedergutmachung.

    no place on the mapWikipedia: Deutsche Mark
  31. 1961

    A large explosion on board the MV Dara in the Persian Gulf killed 238 people.

    Asia · Persian GulfWikipedia: MV Dara
  32. 1968

    BOAC Flight 712 catches fire shortly after takeoff. As a result of her actions in the accident, Barbara Jane Harrison is awarded a posthumous George Cross, the only GC awarded to a woman in peacetime.

    Britain & Ireland · BOAC Flight 712Wikipedia: BOAC Flight 712
  33. 1970

    Bahr El-Baqar primary school bombing: Israeli bombers strike an Egyptian school. Forty-six children are killed.

    Africa · Bahr El-Baqar primary school bombingWikipedia: Bahr El-Baqar primary school bombing
  34. 1973

    The Progress Party was founded in a movie theater in Oslo, Norway.

    no place on the mapWikipedia: Progress Party
  35. 1974

    Hank Aaron passes Babe Ruth as the all-time leader in career home runs by hitting his 715th home run off of Al Downing at Atlanta-Fulton County Stadium.

    North America · Atlanta–Fulton County StadiumWikipedia: Hank Aaron
  36. 1975

    Voyageurs National Park is established by the U.S. Congress.

    North America · Voyageurs National ParkWikipedia: Voyageurs National Park
  37. 1990

    The conservative New Democracy party of Constantine Mitsotakis is elected in the Greek parliamentary election.

  38. 1993

    The Space Shuttle Discovery is launched on mission STS-56.

  39. 2002

    The Space Shuttle Atlantis is launched on mission STS-110, carrying the S0 truss to the International Space Station. Astronaut Jerry L. Ross also becomes the first person to fly on seven spaceflights.

  40. 2005

    A solar eclipse occurs, visible over areas of the Pacific Ocean and Latin American countries such as Costa Rica, Panama, Colombia and Venezuela.

    Oceans · Solar eclipse of April 8, 2005Wikipedia: Solar eclipse of April 8, 2005
  41. 2008

    On board Soyuz TMA-12, Yi So-yeon became the first Korean astronaut.

    no place on the mapWikipedia: Soyuz TMA-12
  42. 2010

    U.S. President Barack Obama and Russian President Dmitry Medvedev sign the New START Treaty.

    Europe · PragueWikipedia: New START
  43. 2014

    Windows XP reaches its standard End Of Life and is no longer supported.

    no place on the mapWikipedia: Windows XP
  44. 2020

    Bernie Sanders ends his presidential campaign, leaving Joe Biden as the Democratic Party's nominee.

    no place on the mapWikipedia: Bernie Sanders
  45. 2024

    Solar eclipse: A total solar eclipse takes place at the Moon's ascending node, visible across North America.

    Latin America · Solar eclipse of April 8, 2024Wikipedia: Solar eclipse of April 8, 2024
  46. 2026

    Operation Eternal Darkness: Hours after a ceasefire to the Iran war, Israeli attacks on Lebanon kill at least 357 and injures more than 1200 people in the largest airstrikes of the Lebanon war.

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 Romanian and were translated for this page.

  1. 1999

    Thousands of people form human shields on three bridges in Belgrade and Novi Sad to protect them against NATO air raids.

    Europe · BelgradeTranslated from the list on Wikipedia in RomanianWikipedia: NATO

Who was born on 8 April

In order of how many Wikipedia editions have an article about each. The first 60 of 242 are shown.

  1. 1938

    Kofi Annan, Ghanaian economist and diplomat, 7th Secretary-General of the United Nations (died 2018)

    KumasiWikipedia: Kofi Annan
  2. 1892

    Mary Pickford, Canadian-American actress, producer, screenwriter and co-founder of United Artists (died 1979)

    TorontoWikipedia: Mary Pickford
  3. 1859

    Edmund Husserl, German Jewish-Austrian mathematician and philosopher (died 1938)

    ProstějovWikipedia: Edmund Husserl
  4. 1605

    Philip IV of Spain (died 1665)

    Valladolid Royal PalaceWikipedia: Philip IV of Spain
  5. 1911

    Emil Cioran, Romanian-French philosopher and academic (died 1995)

    RășinariWikipedia: Emil Cioran
  6. 1929

    Jacques Brel, Belgian singer-songwriter and actor (died 1978)

    Wikipedia: Jacques Brel
  7. 1918

    Betty Ford, American wife of Gerald Ford, 40th First Lady of the United States (died 2011)

    ChicagoWikipedia: Betty Ford
  8. 1875

    Albert I of Belgium (died 1934)

    Palace of the Count of FlandersWikipedia: Albert I of Belgium
  9. 1911

    Melvin Calvin, American chemist and academic, Nobel Prize laureate (died 1997)

    Saint PaulWikipedia: Melvin Calvin
  10. 1966

    Robin Wright, American actress, director, producer

    DallasWikipedia: Robin Wright
  11. 1968

    Patricia Arquette, American actress and director

    ChicagoWikipedia: Patricia Arquette
  12. 1986

    Igor Akinfeev, Russian footballer

    VidnoyeWikipedia: Igor Akinfeev
  13. 1818

    Christian IX, King of Denmark (died 1906)

    Gottorf CastleWikipedia: Christian IX
  14. 1941

    Vivienne Westwood, English fashion designer (died 2022)

    HollingworthWikipedia: Vivienne Westwood
  15. 1904

    John Hicks, English economist and academic, Nobel Prize laureate (died 1989)

    Leamington SpaWikipedia: John Hicks
  16. 1912

    Sonja Henie, Norwegian-American figure skater and actress (died 1969)

    Oslo MunicipalityWikipedia: Sonja Henie
  17. 1692

    Giuseppe Tartini, Italian violinist and composer (died 1770)

    PiranWikipedia: Giuseppe Tartini
  18. 1919

    Ian Smith, Zimbabwean lieutenant and politician, 1st Prime Minister of Rhodesia (died 2007)

    ShurugwiWikipedia: Ian Smith
  19. 1950

    Grzegorz Lato, Polish footballer and coach

    MalborkWikipedia: Grzegorz Lato
  20. 1974

    Chris Kyle, American sniper and memoirist (died 2013)

    OdessaWikipedia: Chris Kyle
  21. 1320

    Peter I of Portugal (died 1367)

    CoimbraWikipedia: Peter I of Portugal
  22. 1936

    Ghassan Kanafani, Palestinian author and politician (died 1972)

    AcreWikipedia: Ghassan Kanafani
  23. 1892

    Richard Neutra, Austrian-American architect, designer of the Los Angeles County Hall of Records (died 1970)

    ViennaWikipedia: Richard Neutra
  24. 1955

    Barbara Kingsolver, American novelist, essayist and poet

    AnnapolisWikipedia: Barbara Kingsolver
  25. 1951

    Geir Haarde, Icelandic economist, journalist, and politician, 23rd Prime Minister of Iceland

    ReykjavíkWikipedia: Geir Haarde
  26. 1982

    Allu Arjun, Indian actor

    ChennaiWikipedia: Allu Arjun
  27. 1818

    August Wilhelm von Hofmann, German chemist and academic (died 1892)

  28. 1909

    John Fante, American author and screenwriter (died 1983)

    BoulderWikipedia: John Fante
  29. 1940

    John Havlicek, American basketball player (died 2019)

    Martins FerryWikipedia: John Havlicek
  30. 1963

    Julian Lennon, English singer-songwriter

    LiverpoolWikipedia: Julian Lennon
  31. 1975

    Anouk, Dutch singer

    The HagueWikipedia: Anouk
  32. 1914

    María Félix, Yaqui/Basque-Mexican actress (died 2002)

    ÁlamosWikipedia: María Félix
  33. 1974

    Nayden Todorov, Bulgarian conductor and culture minister

    PlovdivWikipedia: Nayden Todorov
  34. 1980

    Katee Sackhoff, American actress

    PortlandWikipedia: Katee Sackhoff
  35. 1798

    Dionysios Solomos, Greek poet and author (died 1857)

    ZakynthosWikipedia: Dionysios Solomos
  36. 1979

    Alexi Laiho, Finnish singer-songwriter and guitarist (died 2020)

    EspooWikipedia: Alexi Laiho
  37. 1947

    Pascal Lamy, French businessman and politician, European Commissioner for Trade

    Levallois-PerretWikipedia: Pascal Lamy
  38. 1987

    Royston Drenthe, Dutch footballer

    RotterdamWikipedia: Royston Drenthe
  39. 1966

    Mazinho, Brazilian footballer, coach, and manager

    Santa RitaWikipedia: Mazinho
  40. 1973

    Emma Caulfield, American actress

    San DiegoWikipedia: Emma Caulfield
  41. 1981

    Taylor Kitsch, Canadian actor and model

    KelownaWikipedia: Taylor Kitsch
  42. 1869

    Harvey Cushing, American surgeon and academic (died 1939)

    ClevelandWikipedia: Harvey Cushing
  43. 1926

    Jürgen Moltmann, German theologian and academic (died 2024)

    HamburgWikipedia: Jürgen Moltmann
  44. 1931

    John Gavin, American actor and diplomat, United States Ambassador to Mexico (died 2018)

    Los AngelesWikipedia: John Gavin
  45. 1937

    Seymour Hersh, American journalist and author

    ChicagoWikipedia: Seymour Hersh
  46. 1962

    Izzy Stradlin, American guitarist and songwriter

    LafayetteWikipedia: Izzy Stradlin
  47. 1963

    Dean Norris, American actor

    South BendWikipedia: Dean Norris
  48. 1972

    Sergei Magnitsky, Russian lawyer and accountant (died 2009)

    OdesaWikipedia: Sergei Magnitsky
  49. 1982

    Gennady Golovkin, Kazakhstani boxer

    KaragandaWikipedia: Gennady Golovkin
  50. 1960

    John Schneider, American actor and country singer

    Mount KiscoWikipedia: John Schneider
  51. 1912

    Alois Brunner, Austrian-German SS officer (died 2001 or 2010)

    Deutsch KaltenbrunnWikipedia: Alois Brunner
  52. 1921

    Franco Corelli, Italian tenor and actor (died 2003)

    AnconaWikipedia: Franco Corelli
  53. 1972

    Paul Gray, American bass player and songwriter (died 2010)

    Los AngelesWikipedia: Paul Gray
  54. 1995

    Cedi Osman, Turkish professional basketball player

    OhridWikipedia: Cedi Osman
  55. 2002

    Skai Jackson, American actress

    Staten IslandWikipedia: Skai Jackson
  56. 1920

    Carmen McRae, American singer-songwriter, pianist, and actress (died 1994)

    Wikipedia: Carmen McRae
  57. 1966

    Mark Blundell, English race car driver

    BarnetWikipedia: Mark Blundell
  58. 1947

    Steve Howe, English guitarist, songwriter, and producer

    LondonWikipedia: Steve Howe
  59. 1949

    John Madden, English director and producer

    PortsmouthWikipedia: John Madden
  60. 1955

    Ron Johnson, American businessman and politician

    MankatoWikipedia: Ron Johnson

What is celebrated on 8 April

  • Buddha's Birthday, also known as Hana Matsuri, "Flower Festival" (Japan)
  • Christian feast day: Anne Ayres (Episcopal Church (USA))
  • Christian feast day: Blessed August Czartoryski
  • Christian feast day: Constantina
  • Christian feast day: Pope Dionysius of Alexandria
  • Christian feast day: Julie Billiart of Namur
  • Christian feast day: Perpetuus
  • Christian feast day: Walter of Pontoise
  • Christian feast day: William Augustus Muhlenberg (Episcopal Church (USA))
  • Christian feast day: April 8 (Eastern Orthodox liturgics)
  • Earliest day on which Fast and Prayer Day can fall, while April 14 is the latest; celebrated on the second Friday in April (Liberia)
  • International Romani Day

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