A day on the globeROENES中文
The Earth on 10 January, with the rays of the day’s events
  1. A birthday on the globe

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

    For 10 January, the English Wikipedia lists 46 events and 210 births. 20 of the events stand at their places as rays of light; eight 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 10 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 10 January the Sun passes straight overhead at noon along the parallel of 22.0° south. In London, the day lasts about 8 hours 10 minutes.

    Beyond 68° south the Sun no longer sets; beyond 68° 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. 10 January

    Britain and Ireland#

    Three events from the day’s list are placed here, between 1645 and 1946.

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

  4. Britain & Ireland · Paddington tube station

    1863

    The Metropolitan Railway, the world's oldest underground railway, opens between Paddington and Farringdon, marking the beginning of the London Underground.

    On the map: Paddington tube station.

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

    Wikipedia: Metropolitan Railway

  5. Britain & Ireland · Methodist Central Hall, Westminster

    1946

    The first General Assembly of the United Nations assembles in the Methodist Central Hall, Westminster. Fifty-one nations are represented.

    On the map: Methodist Central Hall, Westminster.

    Wikipedia: Methodist Central Hall, Westminster

  6. 10 January

    North America#

    Six events from the day’s list are placed here, between 1791 and 2019.

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

  7. North America · New Orleans

    1812

    The first steamboat on the Ohio River or the Mississippi River arrives in New Orleans, 82 days after departing from Pittsburgh.

    On the map: New Orleans.

    Wikipedia: New Orleans

  8. North America · Spindletop

    1901

    The first great Texas oil gusher is discovered at Spindletop in Beaumont, Texas.

    On the map: Spindletop.

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

    Wikipedia: Texas

  9. North America · United States Congress

    1984

    Holy See–United States relations: The United States and Holy See (Vatican City) re-establish full diplomatic relations after almost 117 years, overturning the United States Congress's 1867 ban on public funding for such a diplomatic envoy.

    On the map: United States Congress.

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

    Wikipedia: United States Congress

  10. 10 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 Chinese and Spanish and were translated for this page.

  11. From Wikipedia in Chinese · Nuremberg

    1356

    Charles IV of Luxembourg, King of Bohemia, promulgates the Golden Bull in Nuremberg.

    On the map: Nuremberg.

    Translated from the list on Wikipedia in Chinese.

    The article on Wikipedia in Chinese: 波希米亚

  12. From Wikipedia in Spanish · Seville

    1503

    In Seville (Spain), the Casa de Contratación de Indias is created, intended as a depository for goods imported from and exported to the Americas, by royal decrees of 10 January and 14 February.

    On the map: Seville.

    Translated from the list on Wikipedia in Spanish.

    The article on Wikipedia in Spanish: Sevilla

  13. 10 January

    Born on 10 January#

    The English Wikipedia lists 210 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.

  14. Born on 10 January

    626

    Husayn ibn Ali, the third Shia Imam (died 680)

    Place of birth: Medina.

    Wikipedia: Husayn ibn Ali

  15. Born on 10 January

    1938

    Donald Knuth, American computer scientist and mathematician

    Place of birth: Milwaukee.

    Wikipedia: Donald Knuth

  16. Born on 10 January

    1936

    Robert Woodrow Wilson, American physicist and astronomer, Nobel Prize laureate

    Place of birth: Houston.

    Wikipedia: Robert Woodrow Wilson

  17. Born on 10 January

    1883

    Aleksey Nikolayevich Tolstoy, Russian journalist, author, and poet (died 1945)

    Place of birth: Pugachyov.

    Wikipedia: Aleksey Nikolayevich Tolstoy

  18. Born on 10 January

    1945

    Rod Stewart, British singer-songwriter

    Place of birth: London.

    Wikipedia: Rod Stewart

  19. Born in Britain and Ireland

    1999

    Mason Mount, English footballer

    Place of birth: Portsmouth.

    Wikipedia: Mason Mount

  20. Born in Britain and Ireland

    1903

    Barbara Hepworth, English sculptor (died 1975)

    Place of birth: Wakefield.

    Wikipedia: Barbara Hepworth

  21. Born in Britain and Ireland

    1908

    Bernard Lee, English actor (died 1981)

    Place of birth: Brentford.

    Wikipedia: Bernard Lee

  22. 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 10 January

The list is the English Wikipedia’s, in its own wording, as it stood in October 2026. 18 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. 49 BC

    Julius Caesar crosses the Rubicon, signalling the start of civil war.

  2. 9

    The Western Han dynasty ends when Wang Mang claims that the divine Mandate of Heaven called for the end of the dynasty and the beginning of his own, the Xin dynasty.

    Asia · Han dynastyWikipedia: Han dynasty
  3. 69

    Lucius Calpurnius Piso Licinianus is appointed by Galba as deputy Roman Emperor.

  4. 236

    Pope Fabian succeeds Anterus to become the twentieth pope of Rome.

    Europe · Ancient RomeWikipedia: Pope Fabian
  5. 976

    After the death of his guardian John I Tzimiskes, Basil II became the effective ruler and senior emperor of the Byzantine Empire.

    Asia · Byzantine EmpireWikipedia: John I Tzimiskes
  6. 1072

    Robert Guiscard conquers Palermo in Sicily for the Normans.

    Europe · PalermoWikipedia: Robert Guiscard
  7. 1430

    Philip the Good, the Duke of Burgundy, establishes the Order of the Golden Fleece, the most prestigious, exclusive, and expensive order of chivalry in the world.

    no place on the mapWikipedia: Philip the Good
  8. 1475

    Stephen III of Moldavia defeats the Ottoman Empire at the Battle of Vaslui.

    Europe · Battle of VasluiWikipedia: Battle of Vaslui
  9. 1645

    Archbishop William Laud is beheaded for treason at the Tower of London.

    Britain & Ireland · Tower of LondonWikipedia: William Laud
  10. 1776

    American Revolution: Thomas Paine publishes his pamphlet Common Sense.

    no place on the mapWikipedia: Thomas Paine
  11. 1791

    The Siege of Dunlap's Station begins near Cincinnati during the Northwest Indian War.

    North America · Siege of Dunlap's StationWikipedia: Siege of Dunlap's Station
  12. 1812

    The first steamboat on the Ohio River or the Mississippi River arrives in New Orleans, 82 days after departing from Pittsburgh.

    North America · New OrleansWikipedia: New Orleans
  13. 1861

    American Civil War: Florida becomes the third state to secede from the Union.

    North America · FloridaWikipedia: American Civil War
  14. 1863

    The Metropolitan Railway, the world's oldest underground railway, opens between Paddington and Farringdon, marking the beginning of the London Underground.

    Britain & Ireland · Paddington tube stationWikipedia: Metropolitan Railway
  15. 1870

    John D. Rockefeller incorporates Standard Oil.

  16. 1876

    The Plan of Tuxtepec is announced.

    no place on the mapWikipedia: Plan of Tuxtepec
  17. 1901

    New York: Automobile Club of America installs signs on major highways.

  18. 1901

    The first great Texas oil gusher is discovered at Spindletop in Beaumont, Texas.

    North America · SpindletopWikipedia: Texas
  19. 1916

    World War I: Imperial Russia begins the Erzurum Offensive, leading to the defeat of the Ottoman Empire's Third Army.

    Asia · Erzurum offensiveWikipedia: World War I
  20. 1917

    Imperial Trans-Antarctic Expedition: Seven survivors of the Ross Sea party are rescued after being stranded for several months.

  21. 1920

    League of Nations Covenant automatically enters into force after the Treaty of Versailles is ratified by Germany.

    Europe · GermanyWikipedia: Treaty of Versailles
  22. 1920

    The Treaty of Versailles takes effect, officially ending World War I for all combatant nations except the United States.

  23. 1923

    Lithuanian residents of the Klaipėda Region began a revolt, ahead of a League of Nations decision on their future which they expected to be against their interest.

    Europe · Klaipėda RevoltWikipedia: Klaipėda Revolt
  24. 1927

    Fritz Lang's futuristic film Metropolis is released in Germany.

    no place on the mapWikipedia: Fritz Lang
  25. 1929

    Tintin in the Land of the Soviets, the first volume of The Adventures of Tintin by the Belgian cartoonist Hergé, began serialisation.

  26. 1941

    World War II: The Greek army captures Kleisoura.

    Europe · Capture of Klisura PassWikipedia: Capture of Klisura Pass
  27. 1946

    The United States Army Signal Corps successfully conducts Project Diana, bouncing radio waves off the Moon and receiving the reflected signals.

  28. 1946

    The first General Assembly of the United Nations assembles in the Methodist Central Hall, Westminster. Fifty-one nations are represented.

    Britain & Ireland · Methodist Central Hall, WestminsterWikipedia: Methodist Central Hall, Westminster
  29. 1946

    The first session of the United Nations General Assembly convened in London with representatives from the original 51 member states.

  30. 1954

    BOAC Flight 781, a de Havilland DH.106 Comet 1, explodes and falls into the Tyrrhenian Sea, killing 35 people.

    Europe · BOAC Flight 781Wikipedia: BOAC Flight 781
  31. 1966

    Tashkent Declaration, a peace agreement between India and Pakistan signed that resolved the Indo-Pakistani War of 1965.

    Asia · TashkentWikipedia: Tashkent Declaration
  32. 1972

    Sheikh Mujibur Rahman returns to the newly independent Bangladesh as president after spending over nine months in prison in Pakistan.

  33. 1980

    The New England Journal of Medicine publishes the letter Addiction Rare in Patients Treated with Narcotics, which is later misused to downplay the general risk of addiction to opioids.

  34. 1981

    Salvadoran Civil War: The FMLN launches its first major offensive, gaining control of most of Morazán and Chalatenango departments.

    Latin America · Morazán DepartmentWikipedia: Salvadoran Civil War
  35. 1984

    Holy See–United States relations: The United States and Holy See (Vatican City) re-establish full diplomatic relations after almost 117 years, overturning the United States Congress's 1867 ban on public funding for such a diplomatic envoy.

    North America · United States CongressWikipedia: United States Congress
  36. 1985

    Sandinista Daniel Ortega becomes president of Nicaragua and vows to continue the transformation to socialism and alliance with the Soviet Union and Cuba.

    Latin America · NicaraguaWikipedia: Sandinista National Liberation Front
  37. 1985

    Sir Clive Sinclair launched the Sinclair C5 personal electric vehicle, "one of the great marketing bombs of postwar British industry", which later became a cult collectable despite its commercial failure.

    no place on the mapWikipedia: Clive Sinclair
  38. 1990

    Time Warner is formed by the merger of Time Inc. and Warner Communications.

    no place on the mapWikipedia: WarnerMedia
  39. 1993

    The Braer Storm, the strongest extratropical cyclone ever recorded in the North Atlantic, reached peak intensity.

    no place on the mapWikipedia: Braer Storm
  40. 2000

    Crossair Flight 498, a Saab 340 aircraft, crashes in Niederhasli, Switzerland, after taking off from Zurich Airport, killing 13 people.

    Europe · Crossair Flight 498Wikipedia: Crossair Flight 498
  41. 2003

    North Korea withdraws from the Treaty on the Non-Proliferation of Nuclear Weapons, making it the first state to withdraw from the treaty.

  42. 2007

    A general strike begins in Guinea in an attempt to get President Lansana Conté to resign.

    Africa · GuineaWikipedia: 2007 Guinean general strike
  43. 2012

    A bombing at Jamrud in Pakistan, kills at least 30 people and injures 78 others.

    Asia · JamrudWikipedia: 2012 Khyber Agency bombing
  44. 2013

    More than 100 people are killed and 270 injured in several bomb blasts in the Quetta area of Pakistan.

    Asia · January 2013 Pakistan bombingsWikipedia: January 2013 Pakistan bombings
  45. 2015

    A traffic accident between an oil tanker truck and passenger coach en route to Shikarpur from Karachi on the Pakistan National Highway Link Road near Gulshan-e-Hadeed, Karachi, killing at least 62 people.

    Asia · Shikarpur, SindhWikipedia: Gulshan-e-Hadeed
  46. 2019

    A 13-year-old American girl, Jayme Closs, is found alive in Gordon, Wisconsin, having been kidnapped 88 days earlier from her parents' home whilst they were murdered.

    North America · Kidnapping of Jayme ClossWikipedia: Kidnapping of Jayme Closs

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 Spanish and were translated for this page.

  1. 1356

    Charles IV of Luxembourg, King of Bohemia, promulgates the Golden Bull in Nuremberg.

    Europe · NurembergTranslated from the list on Wikipedia in ChineseWikipedia: 波希米亚
  2. 1503

    In Seville (Spain), the Casa de Contratación de Indias is created, intended as a depository for goods imported from and exported to the Americas, by royal decrees of 10 January and 14 February.

    Europe · SevilleTranslated from the list on Wikipedia in SpanishWikipedia: Sevilla

Who was born on 10 January

In order of how many Wikipedia editions have an article about each. The first 60 of 210 are shown.

  1. 626

    Husayn ibn Ali, the third Shia Imam (died 680)

    MedinaWikipedia: Husayn ibn Ali
  2. 1938

    Donald Knuth, American computer scientist and mathematician

    MilwaukeeWikipedia: Donald Knuth
  3. 1934

    Leonid Kravchuk, Ukrainian politician, 1st President of Ukraine (died 2022)

    Velykyi ZhytynWikipedia: Leonid Kravchuk
  4. 1936

    Robert Woodrow Wilson, American physicist and astronomer, Nobel Prize laureate

    HoustonWikipedia: Robert Woodrow Wilson
  5. 1883

    Aleksey Nikolayevich Tolstoy, Russian journalist, author, and poet (died 1945)

    PugachyovWikipedia: Aleksey Nikolayevich Tolstoy
  6. 1945

    Rod Stewart, British singer-songwriter

    LondonWikipedia: Rod Stewart
  7. 1974

    Hrithik Roshan, Indian actor

    MumbaiWikipedia: Hrithik Roshan
  8. 1913

    Gustáv Husák, Slovak politician, 9th President of Czechoslovakia (died 1991)

    DúbravkaWikipedia: Gustáv Husák
  9. 1949

    George Foreman, American boxer, actor, and businessman (died 2025)

    MarshallWikipedia: George Foreman
  10. 1880

    Manuel Azaña, Spanish jurist and politician, 7th President of Spain (died 1940)

    Casa natal de Manuel AzañaWikipedia: Manuel Azaña
  11. 1769

    Michel Ney, French general (died 1815)

    SaarlouisWikipedia: Michel Ney
  12. 1981

    Jared Kushner, American real estate investor and political figure

    LivingstonWikipedia: Jared Kushner
  13. 1999

    Mason Mount, English footballer

    PortsmouthWikipedia: Mason Mount
  14. 1949

    Linda Lovelace, American pornographic actress and activist (died 2002)

    The BronxWikipedia: Linda Lovelace
  15. 1916

    Sune Bergström, Swedish biochemist and academic, Nobel Prize laureate (died 2004)

    Kungsholm parishWikipedia: Sune Bergström
  16. 1834

    John Dalberg-Acton, 1st Baron Acton, Italian-English historian and politician (died 1902)

  17. 1960

    Brian Cowen, Irish lawyer and politician, 12th Taoiseach of Ireland

    TullamoreWikipedia: Brian Cowen
  18. 1974

    Jemaine Clement, New Zealand comedian, actor, and musician

    MastertonWikipedia: Jemaine Clement
  19. 1953

    Pat Benatar, American singer-songwriter

    BrooklynWikipedia: Pat Benatar
  20. 1984

    Marouane Chamakh, Moroccan footballer

    TonneinsWikipedia: Marouane Chamakh
  21. 1480

    Margaret of Austria, Duchess of Savoy (died 1530)

  22. 1980

    Sarah Shahi, American actress

    EulessWikipedia: Sarah Shahi
  23. 1984

    Kalki Koechlin, Indian actress

    PondicherryWikipedia: Kalki Koechlin
  24. 1903

    Barbara Hepworth, English sculptor (died 1975)

    WakefieldWikipedia: Barbara Hepworth
  25. 1999

    Youssouf Fofana, French footballer

    ParisWikipedia: Youssouf Fofana
  26. 1944

    William Sanderson, American actor

    MemphisWikipedia: William Sanderson
  27. 1859

    Francesc Ferrer i Guàrdia, Spanish philosopher and academic (died 1909)

    AlellaWikipedia: Francisco Ferrer
  28. 1939

    Sal Mineo, American actor (died 1976)

    New York CityWikipedia: Sal Mineo
  29. 1947

    Peer Steinbrück, German politician, German Minister of Finance

    HamburgWikipedia: Peer Steinbrück
  30. 1913

    Mehmet Shehu, Albanian soldier and politician, 22nd Prime Minister of Albania (died 1981)

    ÇorrushWikipedia: Mehmet Shehu
  31. 1780

    Martin Lichtenstein, German physician and explorer (died 1857)

    HamburgWikipedia: Hinrich Lichtenstein
  32. 1918

    Arthur Chung, Guyanese lawyer and politician, 1st President of Guyana (died 2008)

    Windsor ForestWikipedia: Arthur Chung
  33. 1943

    Jim Croce, American singer-songwriter (died 1973)

    South PhiladelphiaWikipedia: Jim Croce
  34. 1986

    Kirsten Flipkens, Belgian tennis player

    GeelWikipedia: Kirsten Flipkens
  35. 1956

    Antonio Muñoz Molina, Spanish author

    ÚbedaWikipedia: Antonio Muñoz Molina
  36. 1987

    César Cielo, Brazilian swimmer

    Santa Bárbara d'OesteWikipedia: César Cielo
  37. 1898

    Katharine Burr Blodgett, American physicist and engineer (died 1979)

    SchenectadyWikipedia: Katharine Burr Blodgett
  38. 1908

    Paul Henreid, Italian-American actor and director (died 1992)

    TriesteWikipedia: Paul Henreid
  39. 1908

    Bernard Lee, English actor (died 1981)

    BrentfordWikipedia: Bernard Lee
  40. 1939

    Scott McKenzie, American singer-songwriter and guitarist (died 2012)

    Wikipedia: Scott McKenzie
  41. 1875

    Issai Schur, German mathematician and academic (died 1941)

    MahilyowWikipedia: Issai Schur
  42. 1887

    Robinson Jeffers, American poet and philosopher (died 1962)

    PittsburghWikipedia: Robinson Jeffers
  43. 1930

    Roy E. Disney, American businessman (died 2009)

    Los AngelesWikipedia: Roy E. Disney
  44. 1936

    Stephen E. Ambrose, American historian and author (died 2002)

    DecaturWikipedia: Stephen E. Ambrose
  45. 1959

    Chris Van Hollen, American lawyer and politician

    KarachiWikipedia: Chris Van Hollen
  46. 1959

    Fran Walsh, New Zealand screenwriter and producer

    WellingtonWikipedia: Fran Walsh
  47. 1944

    Frank Sinatra, Jr., American singer and actor (died 2016)

    Jersey CityWikipedia: Frank Sinatra Jr.
  48. 1947

    Tiit Vähi, Estonian engineer and politician, 11th Prime Minister of Estonia

    ValgaWikipedia: Tiit Vähi
  49. 1955

    Michael Schenker, German musician and songwriter

    SarstedtWikipedia: Michael Schenker
  50. 1802

    Carl Ritter von Ghega, Italian-Austrian engineer, designed the Semmering railway (died 1860)

    VeniceWikipedia: Karl Ritter von Ghega
  51. 1904

    Ray Bolger, American actor and dancer (died 1987)

    DorchesterWikipedia: Ray Bolger
  52. 1920

    Roberto M. Levingston, Argentinian general and politician, 36th President of Argentina (died 2015)

    San LuisWikipedia: Roberto Marcelo Levingston
  53. 1912

    Maria Mandl, Austrian Lagerführerin at Auschwitz koncentration camp (died 1948)

    MünzkirchenWikipedia: Maria Mandl
  54. 1928

    Philip Levine, American poet and academic (died 2015)

    DetroitWikipedia: Philip Levine
  55. 1948

    Bernard Thévenet, French cyclist and sportscaster

    Saint-Julien-de-CivryWikipedia: Bernard Thévenet
  56. 1989

    Ali Gabr, Egyptian footballer

    TantaWikipedia: Ali Gabr
  57. 1935

    Ronnie Hawkins, American rockabilly singer-songwriter and guitarist (died 2022)

    HuntsvilleWikipedia: Ronnie Hawkins
  58. 1864

    Grand Duke Peter Nikolaevich of Russia (died 1931)

    Saint PetersburgWikipedia: Grand Duke Peter Nikolaevich of Russia
  59. 1945

    Gunther von Hagens, German anatomist, invented plastination

    Skalmierzyce, Greater Poland VoivodeshipWikipedia: Gunther von Hagens
  60. 1960

    Gurinder Chadha, Kenyan-English director, producer, and screenwriter

    NairobiWikipedia: Gurinder Chadha

What is celebrated on 10 January

  • Christian feast day: Behnam, Sarah, and the Forty Martyrs (Armenian Apostolic Church)
  • Christian feast day: Gregory of Nyssa
  • Christian feast day: Leonie Aviat
  • Christian feast day: Obadiah (Coptic Church)
  • Christian feast day: Peter Orseolo
  • Christian feast day: Pope Agatho (Roman Catholic)
  • Christian feast day: William Laud (Anglican Communion)
  • Christian feast day: William of Donjeon
  • Christian feast day: January 10 (Eastern Orthodox liturgics)
  • Fête du Vodoun (Benin)
  • Margaret Thatcher Day (Falkland Islands)
  • Majority Rule Day (Bahamas)

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