A day on the globeROENES中文
The Earth on 31 August, with the rays of the day’s events
  1. A birthday on the globe

    31 August on the globe: what happened in the world on this day, and who was born

    For 31 August, the English Wikipedia lists 61 events and 257 births. 31 of the events stand at their places as rays of light; seven 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 31 August

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

    On 31 August the Sun passes straight overhead at noon along the parallel of 8.6° north. In London, the day lasts about 13 hours 40 minutes.

    Beyond 81° north the Sun no longer sets; beyond 81° 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. 31 August

    Britain and Ireland#

    Two events from the day’s list are placed here, between 1798 and 1969.

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

  4. Britain & Ireland · Isle of Wight Festival 1969

    1969

    On the final day of the Isle of Wight Festival 1969, attended by approximately 150,000 people over three days, Bob Dylan appeared in his first gig in three years.

    On the map: the coordinates Wikidata gives for the article “Isle of Wight Festival 1969”.

    Wikipedia: Isle of Wight Festival 1969

  5. 31 August

    Europe#

    17 events from the day’s list are placed here, between 1302 and 2019.

    The globe stops at one of them; the whole list is further down. All 17

  6. Europe · Bergen

    1314

    King Haakon V moves the capital of Norway from Bergen to Oslo.

    On the map: Bergen.

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

    Wikipedia: Haakon V

  7. 31 August

    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 Chinese and were translated for this page.

  8. From Wikipedia in Chinese · Charter of the United Nations

    1965

    Amendments to Articles 23, 27 and 61 of the UN Charter are adopted, enlarging the Security Council of the United Nations and expanding its powers.

    On the map: Charter of the United Nations.

    Translated from the list on Wikipedia in Chinese.

    The article on Wikipedia in Chinese: 联合国宪章

  9. 31 August

    Born on 31 August#

    The English Wikipedia lists 257 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.

  10. Born on 31 August

    1870

    Maria Montessori, Italian physician and educator (died 1952)

    Place of birth: Chiaravalle.

    Wikipedia: Maria Montessori

  11. Born on 31 August

    1811

    Théophile Gautier, French poet and critic (died 1872)

    Place of birth: Tarbes.

    Wikipedia: Théophile Gautier

  12. Born on 31 August

    1949

    Richard Gere, American actor and producer

    Place of birth: Philadelphia.

    Wikipedia: Richard Gere

  13. Born on 31 August

    1821

    Hermann von Helmholtz, German physician and physicist (died 1894)

    Place of birth: Potsdam.

    Wikipedia: Hermann von Helmholtz

  14. Born on 31 August

    1982

    Pepe Reina, Spanish footballer

    Place of birth: Madrid.

    Wikipedia: Pepe Reina

  15. Born in Britain and Ireland

    1945

    Van Morrison, Northern Irish singer-songwriter

    Place of birth: Belfast.

    Wikipedia: Van Morrison

  16. Born in Britain and Ireland

    1921

    Raymond Williams, Welsh author and academic (died 1988)

    Place of birth: Pandy.

    Wikipedia: Raymond Williams

  17. Born in Britain and Ireland

    1913

    Bernard Lovell, English physicist and astronomer (died 2012)

    Place of birth: Oldland Common.

    Wikipedia: Bernard Lovell

  18. 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 31 August

The list is the English Wikipedia’s, in its own wording, as it stood in October 2026. 23 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. 1056

    After a sudden gastric illness, Byzantine Empress Theodora dies childless, thus ending the Macedonian dynasty.

  2. 1218

    Al-Kamil becomes sultan of the Ayyubid dynasty.

    no place on the mapWikipedia: Al-Kamil
  3. 1302

    Frederick III of Aragon and Charles, Count of Valois sign the Peace of Caltabellotta, which ends the War of the Sicilian Vespers and divides the old Kingdom of Sicily into an island portion and a peninsular portion.

    Europe · CaltabellottaWikipedia: Peace of Caltabellotta
  4. 1314

    King Haakon V moves the capital of Norway from Bergen to Oslo.

    Europe · BergenWikipedia: Haakon V
  5. 1420

    The 8.8–9.4 Caldera earthquake shakes Chile's Atacama Region causing tsunami in Chile, Hawaii, and Japan.

    Latin America · 1420 Caldera earthquakeWikipedia: 1420 Caldera earthquake
  6. 1422

    King Henry V of England dies of dysentery while in France and his son, Henry VI, becomes king at the age of nine months.

  7. 1483

    Under the influence of the Ottoman government, patriarch Symeon I convenes a synod of the Eastern Orthodox Churches in Constantinople which defines the ritual for admitting Catholics to the Eastern Orthodox Churches and condemns the church union of Ferrara-Florence.

    Europe · Council of FlorenceWikipedia: Synod of Constantinople
  8. 1776

    William Livingston, the first Governor of New Jersey, begins serving his first term.

  9. 1795

    War of the First Coalition: The British capture Trincomalee (present-day Sri Lanka) from the Dutch in order to keep it out of French hands.

    Asia · Invasion of CeylonWikipedia: Invasion of Ceylon
  10. 1798

    Irish Rebellion: Irish rebels, with French assistance, establish the short-lived Republic of Connacht.

    Britain & Ireland · Irish RepublicWikipedia: Irish Rebellion of 1798
  11. 1813

    Peninsular War: Spanish troops repel a French attack in the Battle of San Marcial.

    Europe · Battle of San MarcialWikipedia: Battle of San Marcial
  12. 1814

    War of 1812: American militia forces repelled a British force at the Battle of Caulk's Field, killing 41 people including Captain Peter Parker of the Royal Navy.

    North America · Battle of Caulk's FieldWikipedia: Battle of Caulk's Field
  13. 1864

    American Civil War: The Battle of Jonesborough, the culmination of the Atlanta campaign, begins as Union forces under General William T. Sherman clash with Confederate troops under General William J. Hardee south of Atlanta.

    North America · Battle of JonesboroughWikipedia: American Civil War
  14. 1876

    Ottoman Sultan Murad V is deposed and succeeded by his brother, Abdul Hamid II.

  15. 1886

    The 7.0 Mw Charleston earthquake strikes southeastern South Carolina with a maximum Mercalli intensity of X (Extreme), killing 60 people and causing damage worth an estimated at $5 to $6 million.

    North America · 1886 Charleston earthquakeWikipedia: 1886 Charleston earthquake
  16. 1888

    Mary Ann Nichols, the first of Jack the Ripper's confirmed victims, is murdered.

    no place on the mapWikipedia: Mary Ann Nichols
  17. 1895

    German Count Ferdinand von Zeppelin patents his navigable balloon.

  18. 1897

    Thomas Edison was granted a patent for the Kinetoscope, a precursor to the modern movie projector.

    no place on the mapWikipedia: Thomas Edison
  19. 1907

    Russia and the United Kingdom sign the Anglo-Russian Convention, by which the UK recognizes Russian preeminence in northern Persia, while Russia recognizes British preeminence in southeastern Persia and Afghanistan. Both powers pledge not to interfere in Tibet.

  20. 1918

    World War I: Start of the Battle of Mont Saint-Quentin, a successful assault by the Australian Corps during the Hundred Days Offensive.

    Europe · Hundred Days OffensiveWikipedia: World War I
  21. 1920

    Polish–Soviet War: A decisive Polish victory in the Battle of Komarów.

    Europe · Central and Eastern EuropeWikipedia: Polish–Soviet War
  22. 1933

    The Integral Nationalist Group wins the 1933 Andorran parliamentary election, the first election in Andorra held with universal male suffrage.

    Europe · AndorraWikipedia: 1933 Andorran parliamentary election
  23. 1935

    In an attempt to stay out of the growing tensions concerning Germany and Japan, the United States passes the first of its Neutrality Acts.

  24. 1936

    Radio Prague, now the official international broadcasting station of the Czech Republic, goes on the air.

  25. 1939

    Nazi Germany mounts a false flag attack on the Gleiwitz radio station, creating an excuse to attack Poland the following day, thus starting World War II in Europe.

    Europe · Gleiwitz incidentWikipedia: Gleiwitz incident
  26. 1940

    Pennsylvania Central Airlines Trip 19 crashes near Lovettsville, Virginia. The CAB investigation of the accident is the first investigation to be conducted under the Bureau of Air Commerce act of 1938.

    North America · Lovettsville air disasterWikipedia: Lovettsville air disaster
  27. 1940

    Second World War: Two Royal navy destroyers were lost to mines and two other vessels damaged off Texel, Netherlands, killing around 300 men.

    Europe · TexelWikipedia: World War II
  28. 1941

    World War II: Serbian paramilitary forces defeat Germans in the Battle of Loznica.

    Europe · LoznicaWikipedia: Battle of Loznica
  29. 1942

    The Matagorda hurricane, the most intense and costliest tropical cyclone of the 1942 Atlantic hurricane season, dissipated after causing $26.5 million in damages and eight deaths.

  30. 1943

    USS Harmon, the first U.S. Navy ship to be named after a black person, is commissioned.

    no place on the mapWikipedia: USS Harmon
  31. 1949

    The retreat of the Democratic Army of Greece into Albania after its defeat on Gramos mountain marks the end of the Greek Civil War.

    Europe · GramosWikipedia: Greek Civil War
  32. 1950

    TWA Flight 903 crashes near Itay El Barud, Egypt, killing all 55 aboard.

    Africa · TWA Flight 903Wikipedia: TWA Flight 903
  33. 1957

    The Federation of Malaya (now Malaysia) gains its independence from the United Kingdom.

  34. 1959

    A parcel bomb sent by Ngô Đình Nhu, younger brother and chief adviser of South Vietnamese President Ngô Đình Diệm, fails to kill King Norodom Sihanouk of Cambodia.

    no place on the mapWikipedia: Letter bomb
  35. 1962

    Trinidad and Tobago becomes independent.

    Latin America · Trinidad and TobagoWikipedia: Trinidad and Tobago
  36. 1963

    Crown Colony of North Borneo (now Sabah) achieves self-governance.

    Asia · SabahWikipedia: Crown Colony of North Borneo
  37. 1968

    Start of the Congress of Carrara, one of the major 20th century anarchist congresses.

  38. 1969

    On the final day of the Isle of Wight Festival 1969, attended by approximately 150,000 people over three days, Bob Dylan appeared in his first gig in three years.

    Britain & Ireland · Isle of Wight Festival 1969Wikipedia: Isle of Wight Festival 1969
  39. 1972

    Aeroflot Flight 558 crashes in the Abzelilovsky District in Bashkortostan, Russia (then the Soviet Union), killing all 102 people aboard.

    Europe · Aeroflot Flight 558Wikipedia: Aeroflot Flight 558
  40. 1986

    Aeroméxico Flight 498 collides with a Piper PA-28 Cherokee over Cerritos, California, killing 67 in the air and 15 on the ground.

    North America · Aeroméxico Flight 498Wikipedia: Aeroméxico Flight 498
  41. 1986

    The Soviet passenger liner Admiral Nakhimov sinks in the Black Sea after colliding with the bulk carrier Pyotr Vasev, killing 423.

    no place on the mapWikipedia: Soviet Union
  42. 1987

    Thai Airways Flight 365 crashes into the ocean near Ko Phuket, Thailand, killing all 83 aboard.

    Asia · Thai Airways Flight 365Wikipedia: Thai Airways Flight 365
  43. 1988

    CAAC Flight 301 overshoots the runway at Kai Tak Airport and crashes into Kowloon Bay, killing seven people.

    Asia · CAAC Flight 301Wikipedia: CAAC Flight 301
  44. 1988

    Delta Air Lines Flight 1141 crashes during takeoff from Dallas/Fort Worth International Airport, killing 14.

    North America · Delta Air Lines Flight 1141Wikipedia: Delta Air Lines Flight 1141
  45. 1991

    Kyrgyzstan declares its independence from the Soviet Union.

    no place on the mapWikipedia: Kyrgyzstan
  46. 1993

    Russia completes removing its troops from Lithuania.

    Europe · LithuaniaWikipedia: Lithuania
  47. 1994

    Argentina abolishes conscription after months of social backlash over the murder of a conscript.

    Latin America · ArgentinaWikipedia: Argentina
  48. 1994

    Russia completes removing its troops from Estonia.

    Europe · EstoniaWikipedia: Estonia
  49. 1996

    Saddam Hussein's troops seize Irbil after the Kurdish Masoud Barzani appealed for help to defeat his Kurdish rival PUK.

    no place on the mapWikipedia: Saddam Hussein
  50. 1997

    Diana, Princess of Wales, her partner, Dodi Fayed, and driver Henri Paul die in a car crash in Paris.

    Europe · Death of Diana, Princess of WalesWikipedia: Death of Diana, Princess of Wales
  51. 1999

    A LAPA Boeing 737-200 crashes during takeoff from Jorge Newbury Airport in Buenos Aires, killing 65, including two on the ground.

    Latin America · LAPA Flight 3142Wikipedia: LAPA Flight 3142
  52. 1999

    The first of a series of bombings in Moscow kills one person and wounds 40 others.

    Europe · MoscowWikipedia: 1999 Russian apartment bombings
  53. 2002

    Typhoon Rusa, the most powerful typhoon to hit South Korea in 43 years, makes landfall, killing at least 236 people.

    no place on the mapWikipedia: Typhoon Rusa
  54. 2005

    The 2005 Al-Aaimmah bridge stampede in Baghdad kills 953 people.

    Asia · 2005 Al-Aimmah Bridge disasterWikipedia: 2005 Al-Aimmah Bridge disaster
  55. 2006

    Edvard Munch's famous painting, The Scream, stolen on August 22, 2004, is recovered in a raid by Norwegian police.

    no place on the mapWikipedia: The Scream
  56. 2010

    The last episode of The Bill, the longest-running police drama in British television history, was broadcast.

    no place on the mapWikipedia: The Bill
  57. 2016

    Brazil's President Dilma Rousseff is impeached and removed from office.

    no place on the mapWikipedia: Dilma Rousseff
  58. 2019

    A sightseeing helicopter crashes in the mountains of Skoddevarre in Alta, Norway, killing all six people on board.

    Europe · 2019 Alta helicopter crashWikipedia: 2019 Alta helicopter crash
  59. 2024

    A helicopter crashes in Kamchatka Krai in the Russian Far East, killing all 22 occupants.

    Asia · 2024 Kamchatka Mil Mi-8 crashWikipedia: 2024 Kamchatka Mil Mi-8 crash
  60. 2025

    A landslide in the Darfur region of Sudan kills over 1000 people.

    Africa · 2025 Tarasin landslideWikipedia: 2025 Tarasin landslide
  61. 2025

    An earthquake in eastern Afghanistan kills over 1400 people.

    Asia · 2025 Kunar earthquakeWikipedia: 2025 Kunar earthquake

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 Chinese and were translated for this page.

  1. 1965

    Amendments to Articles 23, 27 and 61 of the UN Charter are adopted, enlarging the Security Council of the United Nations and expanding its powers.

    North America · Charter of the United NationsTranslated from the list on Wikipedia in ChineseWikipedia: 联合国宪章

Who was born on 31 August

In order of how many Wikipedia editions have an article about each. The first 60 of 257 are shown.

  1. 12

    Caligula, Roman emperor (died 41)

    AntiumWikipedia: Caligula
  2. 1956

    Tsai Ing-wen, Taiwanese politician and the President of the Republic of China

    Zhongshan DistrictWikipedia: Tsai Ing-wen
  3. 1870

    Maria Montessori, Italian physician and educator (died 1952)

    ChiaravalleWikipedia: Maria Montessori
  4. 1960

    Hassan Nasrallah, Lebanese politician, 3rd Secretary-General of Hezbollah (died 2024)

    Bourj HammoudWikipedia: Hassan Nasrallah
  5. 1985

    Mohammed bin Salman, Crown Prince of Saudi Arabia

    RiyadhWikipedia: Mohammed bin Salman
  6. 1811

    Théophile Gautier, French poet and critic (died 1872)

    TarbesWikipedia: Théophile Gautier
  7. 1949

    Richard Gere, American actor and producer

    PhiladelphiaWikipedia: Richard Gere
  8. 161

    Commodus, Roman emperor (died 192)

    LanuviumWikipedia: Commodus
  9. 1821

    Hermann von Helmholtz, German physician and physicist (died 1894)

    PotsdamWikipedia: Hermann von Helmholtz
  10. 1569

    Jahangir, Mughal emperor (died 1627)

    Fatehpur SikriWikipedia: Jahangir
  11. 1880

    Wilhelmina, queen of the Netherlands (died 1962)

    Noordeinde PalaceWikipedia: Wilhelmina of the Netherlands
  12. 1970

    Queen Rania of Jordan

    Kuwait CityWikipedia: Queen Rania of Jordan
  13. 1982

    Pepe Reina, Spanish footballer

    MadridWikipedia: Pepe Reina
  14. 1879

    Taishō, Emperor of Japan (died 1926)

    Akasaka EstateWikipedia: Emperor Taishō
  15. 1908

    William Saroyan, American novelist, playwright, and short story writer (died 1981)

    FresnoWikipedia: William Saroyan
  16. 1971

    Chris Tucker, American comedian and actor

    AtlantaWikipedia: Chris Tucker
  17. 1928

    James Coburn, American actor (died 2002)

    LaurelWikipedia: James Coburn
  18. 1949

    Hugh David Politzer, American physicist and academic, Nobel Prize laureate

    New York CityWikipedia: Hugh David Politzer
  19. 1970

    Nikola Gruevski, Macedonian economist and politician, 6th Prime Minister of the Republic of Macedonia

    SkopjeWikipedia: Nikola Gruevski
  20. 1897

    Fredric March, American actor (died 1975)

    RacineWikipedia: Fredric March
  21. 1988

    David Ospina, Colombian footballer

    ItagüíWikipedia: David Ospina
  22. 1919

    Amrita Pritam, Indian poet and author (died 2005)

    GujranwalaWikipedia: Amrita Pritam
  23. 1945

    Van Morrison, Northern Irish singer-songwriter

    BelfastWikipedia: Van Morrison
  24. 1907

    Ramon Magsaysay, Filipino captain, engineer, and politician, 7th President of the Philippines (died 1957)

    IbaWikipedia: Ramon Magsaysay
  25. 1945

    Itzhak Perlman, Israeli-American violinist and conductor

    Tel AvivWikipedia: Itzhak Perlman
  26. 1879

    Alma Mahler, Austrian-American composer and author (died 1964)

    ViennaWikipedia: Alma Mahler
  27. 1977

    Jeff Hardy, American wrestler and singer

    CameronWikipedia: Jeff Hardy
  28. 1843

    Georg von Hertling, German academic and politician, 7th Chancellor of the German Empire (died 1919)

    DarmstadtWikipedia: Georg von Hertling
  29. 1992

    Nicolás Tagliafico, Argentine footballer

    Rafael CalzadaWikipedia: Nicolás Tagliafico
  30. 1991

    Cédric Soares, Portuguese footballer

    SingenWikipedia: Cédric Soares
  31. 1834

    Amilcare Ponchielli, Italian composer and educator (died 1886)

    Paderno PonchielliWikipedia: Amilcare Ponchielli
  32. 1955

    Edwin Moses, American hurdler

    DaytonWikipedia: Edwin Moses
  33. 1962

    Dee Bradley Baker, American voice actor

    BloomingtonWikipedia: Dee Bradley Baker
  34. 1907

    Altiero Spinelli, Italian theorist and politician (died 1986)

    RomeWikipedia: Altiero Spinelli
  35. 1985

    Rolando, Portuguese footballer

    São VicenteWikipedia: Rolando
  36. 1979

    Mickie James, American wrestler

    RichmondWikipedia: Mickie James
  37. 1947

    Somchai Wongsawat, Thai lawyer and politician, 26th Prime Minister of Thailand

    Suan KhanWikipedia: Somchai Wongsawat
  38. 1975

    Sara Ramirez, Mexican-American actor and musician

    MazatlánWikipedia: Sara Ramirez
  39. 1976

    Roque Júnior, Brazilian footballer and manager

    Santa Rita do SapucaíWikipedia: Roque Júnior
  40. 1921

    Raymond Williams, Welsh author and academic (died 1988)

    PandyWikipedia: Raymond Williams
  41. 1925

    Maurice Pialat, French actor and director (died 2003)

    CunlhatWikipedia: Maurice Pialat
  42. 1913

    Bernard Lovell, English physicist and astronomer (died 2012)

    Oldland CommonWikipedia: Bernard Lovell
  43. 1924

    Buddy Hackett, American actor and singer (died 2003)

    BrooklynWikipedia: Buddy Hackett
  44. 2001

    Amanda Anisimova, American tennis player

    Freehold TownshipWikipedia: Amanda Anisimova
  45. 1948

    Rudolf Schenker, German guitarist and songwriter

    HildesheimWikipedia: Rudolf Schenker
  46. 1966

    Lyuboslav Penev, Bulgarian footballer and manager

    DobrichWikipedia: Lyuboslav Penev
  47. 1996

    Jalen Brunson, American basketball player

    New BrunswickWikipedia: Jalen Brunson
  48. 2004

    Jang Won-young, South Korean singer and model

    SeoulWikipedia: Jang Won-young
  49. 1878

    Frank Jarvis, American sprinter and lawyer (died 1933)

    CaliforniaWikipedia: Frank Jarvis
  50. 1953

    Pavel Vinogradov, Russian astronaut and engineer

    MagadanWikipedia: Pavel Vinogradov
  51. 1969

    Andrew Cunanan, American spree killer (died 1997)

    Wikipedia: Andrew Cunanan
  52. 1984

    Ted Ligety, American skier

    Salt Lake CityWikipedia: Ted Ligety
  53. 1914

    Richard Basehart, American actor (died 1984)

    ZanesvilleWikipedia: Richard Basehart
  54. 1928

    Jaime Sin, Filipino cardinal (died 2005)

    New WashingtonWikipedia: Jaime Sin
  55. 1947

    Luca Cordero di Montezemolo, Italian businessman

    BolognaWikipedia: Luca di Montezemolo
  56. 1970

    Debbie Gibson, American singer-songwriter, producer, and actress

    BrooklynWikipedia: Debbie Gibson
  57. 1883

    Ramón Fonst, Cuban fencer (died 1959)

    HavanaWikipedia: Ramón Fonst
  58. 1978

    Philippe Christanval, French footballer

    ParisWikipedia: Philippe Christanval
  59. 1993

    Pablo Marí, Spanish football player

    AlmussafesWikipedia: Pablo Marí
  60. 1948

    Holger Osieck, German footballer and manager

    HombergWikipedia: Holger Osieck

What is celebrated on 31 August

  • Baloch-Pakhtun Unity Day (Balochs and Pashtuns, International observance)
  • Christian feast day: Aidan of Lindisfarne
  • Christian feast day: Aristides of Athens
  • Christian feast day: Cuthburh
  • Christian feast day: Joseph of Arimathea
  • Christian feast day: Nicodemus
  • Christian feast day: Paulinus of Trier
  • Christian feast day: Raymond Nonnatus
  • Christian feast day: Wala of Corbie
  • Christian feast day: August 31 (Eastern Orthodox liturgics)
  • Day of Solidarity and Freedom (Poland)
  • Departure Day, celebrates the withdrawal of American troops from Afghanistan
  • Independence Day, celebrates the independence of Kyrgyzstan from the Soviet Union in 1991.
  • Independence Day, celebrates the independence of Malaya from the United Kingdom in 1957.

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