A day on the globeROENES中文
The Earth on 7 January, with the rays of the day’s events
  1. A birthday on the globe

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

    For 7 January, the English Wikipedia lists 54 events and 163 births. 27 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 7 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 7 January the Sun passes straight overhead at noon along the parallel of 22.4° south. In London, the day lasts about 8 hours 5 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. 7 January

    Britain and Ireland#

    Four events from the day’s list are placed here, between 1327 and 1989.

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

  4. Britain & Ireland · Palace of Westminster

    1327

    The Parliament of 1327, which was instrumental in the transfer of the English Crown from King Edward II to his son, Edward III, began at the Palace of Westminster.

    On the map: Palace of Westminster.

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

    Wikipedia: Parliament of 1327

  5. Britain & Ireland · Dover

    1785

    Frenchman Jean-Pierre Blanchard and American John Jeffries travel from Dover, England, to Calais, France, in a gas balloon.

    On the map: Dover.

    Wikipedia: Jean-Pierre Blanchard

  6. 7 January

    Europe#

    11 events from the day’s list are placed here, between 49 BC and 2020.

    The globe stops at one of them; the whole list is further down. All 11

  7. Europe · Rome

    1935

    Benito Mussolini and French Foreign Minister Pierre Laval sign the Franco-Italian Agreement.

    On the map: Rome.

    Wikipedia: Franco-Italian Agreement of 1935

  8. 7 January

    North America#

    Seven events from the day’s list are placed here, between 1608 and 2025.

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

  9. North America · New York City

    1954

    Georgetown–IBM experiment: The first public demonstration of a machine translation system is held in New York at the head office of IBM.

    On the map: New York City.

    Wikipedia: Georgetown–IBM experiment

  10. North America · Cape Canaveral Launch Complex 36

    1968

    Surveyor program: Surveyor 7, the last spacecraft in the Surveyor series, lifts off from Cape Canaveral Launch Complex 36A.

    On the map: Cape Canaveral Launch Complex 36.

    Wikipedia: Surveyor program

  11. 7 January

    Born on 7 January#

    The English Wikipedia lists 163 births for this day. The blue points are the birthplaces of 59 of these people: those written about in the most Wikipedia editions, where Wikidata gives a place of birth.

  12. Born on 7 January

    1971

    Jeremy Renner, American actor

    Place of birth: Modesto.

    Wikipedia: Jeremy Renner

  13. Born on 7 January

    1964

    Nicolas Cage, American actor

    Place of birth: Long Beach.

    Wikipedia: Nicolas Cage

  14. Born on 7 January

    1985

    Lewis Hamilton, English racing driver

    Place of birth: Stevenage.

    Wikipedia: Lewis Hamilton

  15. Born on 7 January

    1502

    Pope Gregory XIII (died 1585)

    Place of birth: Bologna.

    Wikipedia: Pope Gregory XIII

  16. Born on 7 January

    1991

    Eden Hazard, Belgian footballer

    Place of birth: La Louvière.

    Wikipedia: Eden Hazard

  17. Born in Britain and Ireland

    1941

    John E. Walker, English chemist and academic, Nobel Prize laureate

    Place of birth: Halifax.

    Wikipedia: John E. Walker

  18. Born in Britain and Ireland

    1827

    Sandford Fleming, Scottish-Canadian engineer, created Universal Standard Time (died 1915)

    Place of birth: Kirkcaldy.

    Wikipedia: Sandford Fleming

  19. Born in Britain and Ireland

    1985

    Wayne Routledge, English footballer

    Place of birth: Sidcup.

    Wikipedia: Wayne Routledge

  20. 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 7 January

The list is the English Wikipedia’s, in its own wording, as it stood in October 2026. 19 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

    The Senate of Rome says that Caesar will be declared a public enemy unless he disbands his army, prompting the tribunes who support him to flee to where Caesar is waiting in Ravenna.

    Europe · RavennaWikipedia: Senate of the Roman Republic
  2. 1078

    The people of Constantinople revolt, lynch the unpopular official Nikephoritzes and proclaim Nikephoros Botaneiates as emperor.

    Asia · ConstantinopleWikipedia: Constantinople
  3. 1325

    Afonso IV becomes King of Portugal.

  4. 1327

    The Parliament of 1327, which was instrumental in the transfer of the English Crown from King Edward II to his son, Edward III, began at the Palace of Westminster.

    Britain & Ireland · Palace of WestminsterWikipedia: Parliament of 1327
  5. 1558

    French troops, led by Francis, Duke of Guise, take Calais, the last continental possession of England.

    Europe · Siege of CalaisWikipedia: Siege of Calais
  6. 1608

    Fire destroys Jamestown, Virginia.

    North America · JamestownWikipedia: Jamestown
  7. 1610

    Galileo Galilei makes his first observation of the four Galilean moons: Ganymede, Callisto, Io and Europa, although he is not able to distinguish the last two until the following night.

    no place on the mapWikipedia: Galileo Galilei
  8. 1708

    Bashkir rebels besiege Yelabuga.

    Europe · YelabugaWikipedia: Siege of Yelabuga
  9. 1708

    Battle of Zlatoust: Battle between Bashkir and Tatar rebels and the government troops of the Tsardom of Russia. It is one of the events of the Bashkir rebellion of 1704–1711.

    Europe · Tsardom of RussiaWikipedia: Tsardom of Russia
  10. 1738

    A peace treaty is signed between Peshwa Bajirao and Jai Singh II following Maratha victory in the Battle of Bhopal.

    Africa · Battle of BhopalWikipedia: Battle of Bhopal
  11. 1782

    The first American commercial bank, the Bank of North America, opens.

  12. 1785

    Frenchman Jean-Pierre Blanchard and American John Jeffries travel from Dover, England, to Calais, France, in a gas balloon.

    Britain & Ireland · DoverWikipedia: Jean-Pierre Blanchard
  13. 1797

    The Italian tricolour was first adopted as an official flag by the government of the Cispadane Republic.

    Europe · Cispadane RepublicWikipedia: Flag of Italy
  14. 1835

    HMS Beagle, with Charles Darwin on board, drops anchor off the Chonos Archipelago.

    Latin America · Chonos ArchipelagoWikipedia: HMS Beagle
  15. 1867

    The Kingstree jail fire kills 22 freedmen in Reconstruction-era South Carolina.

    North America · South CarolinaWikipedia: Reconstruction era
  16. 1894

    Thomas Edison makes a kinetoscopic film of someone sneezing. On the same day, his employee, William Kennedy Dickson, receives a patent for motion picture film.

    no place on the mapWikipedia: Thomas Edison
  17. 1904

    The distress signal "CQD" is established only to be replaced two years later by "SOS".

    no place on the mapWikipedia: Distress signal
  18. 1919

    Montenegrin guerrilla fighters rebel against the planned annexation of Montenegro by Serbia, but fail.

  19. 1920

    The New York State Assembly refuses to seat five duly elected Socialist assemblymen.

  20. 1922

    Dáil Éireann ratifies the Anglo-Irish Treaty by a 64–57 vote.

  21. 1927

    The first transatlantic commercial telephone service is established from New York City to London.

  22. 1928

    A disastrous flood of the River Thames kills 14 people and causes extensive damage to much of riverside London.

    Britain & Ireland · 1928 Thames floodWikipedia: 1928 Thames flood
  23. 1931

    Guy Menzies flies the first solo non-stop trans-Tasman flight (from Australia to New Zealand) in 11 hours and 45 minutes, crash-landing on New Zealand's west coast.

    Oceania · Westland DistrictWikipedia: Guy Menzies
  24. 1935

    Benito Mussolini and French Foreign Minister Pierre Laval sign the Franco-Italian Agreement.

    Europe · RomeWikipedia: Franco-Italian Agreement of 1935
  25. 1939

    French physicist Marguerite Perey identified francium, the last element to be discovered in nature rather than by synthesis.

    no place on the mapWikipedia: Marguerite Perey
  26. 1940

    Winter War: Battle of Raate Road: The Finnish 9th Division finally defeat the numerically superior Soviet forces on the Raate-Suomussalmi road.

    Europe · Battle of Raate RoadWikipedia: Winter War
  27. 1948

    Kentucky Air National Guard pilot Thomas Mantell crashes while in pursuit of a supposed UFO.

  28. 1950

    In the Sverdlovsk air disaster, all 19 of those on board are killed, including almost the entire national ice hockey team (VVS Moscow) of the Soviet Air Force – 11 players, as well as a team doctor and a masseur.

    Asia · 1950 Sverdlovsk plane crashWikipedia: 1950 Sverdlovsk plane crash
  29. 1954

    Georgetown–IBM experiment: The first public demonstration of a machine translation system is held in New York at the head office of IBM.

    North America · New York CityWikipedia: Georgetown–IBM experiment
  30. 1955

    Contralto Marian Anderson becomes the first person of color to perform at the Metropolitan Opera in Giuseppe Verdi's Un ballo in maschera.

  31. 1959

    The United States recognizes the new Cuban government of Fidel Castro.

    Latin America · CubaWikipedia: Cuba
  32. 1968

    Surveyor program: Surveyor 7, the last spacecraft in the Surveyor series, lifts off from Cape Canaveral Launch Complex 36A.

    North America · Cape Canaveral Launch Complex 36Wikipedia: Surveyor program
  33. 1972

    Iberia Flight 602 crashes near Ibiza Airport, killing all 104 people on board.

    Europe · Iberia Flight 602Wikipedia: Iberia Flight 602
  34. 1973

    In his second shooting spree of the week, Mark Essex fatally shoots seven people and wounds five others at Howard Johnson's Hotel in New Orleans, before being shot to death by police officers.

    North America · New OrleansWikipedia: Mark Essex
  35. 1978

    An article entitled "Iran and Red and Black Colonization" was published in the newspaper Ettela'at attacking Ruhollah Khomeini, then in exile in Iraq.

  36. 1979

    Third Indochina War: Cambodian–Vietnamese War: Phnom Penh falls to the advancing Vietnamese troops, driving out Pol Pot and the Khmer Rouge.

    Asia · Phnom PenhWikipedia: Cambodian–Vietnamese War
  37. 1980

    U.S. President Jimmy Carter authorizes legislation giving $1.5 billion in loans to bail out the Chrysler Corporation.

    no place on the mapWikipedia: Jimmy Carter
  38. 1984

    Brunei becomes the sixth member of the Association of Southeast Asian Nations (ASEAN).

    Asia · BruneiWikipedia: ASEAN
  39. 1985

    Japan Aerospace Exploration Agency launches Sakigake, Japan's first interplanetary spacecraft and the first deep space probe to be launched by any country other than the United States or the Soviet Union.

    no place on the mapWikipedia: JAXA
  40. 1989

    Representatives of Iranian leader Ruhollah Khomeini delivered a letter to Mikhail Gorbachev, inviting him to consider Islam as an alternative to communism, and predicting the dissolution of the Soviet Bloc.

    no place on the mapWikipedia: Ruhollah Khomeini
  41. 1989

    Sutton United, a team in the fifth tier of English league football, defeated top-tier Coventry City in one of the biggest upsets in FA Cup history.

    Britain & Ireland · Gander Green LaneWikipedia: Sutton United 2–1 Coventry City
  42. 1991

    Roger Lafontant, former leader of the Tonton Macoute in Haiti under François Duvalier, attempts a coup d'état, which ends in his arrest.

    Latin America · HaitiWikipedia: Roger Lafontant
  43. 1993

    Bosnian War: The Bosnian Army executes a surprise attack at the village of Kravica in Srebrenica.

    Europe · Kravica attackWikipedia: Kravica attack
  44. 1993

    The Fourth Republic of Ghana is inaugurated with Jerry Rawlings as president.

    no place on the mapWikipedia: History of Ghana
  45. 1994

    A British Aerospace Jetstream 41 operating as United Express Flight 6291 crashes in Gahanna, Ohio, killing five of the eight people on board.

    North America · United Express Flight 6291Wikipedia: United Express Flight 6291
  46. 1999

    The Senate trial in the impeachment of U.S. President Bill Clinton begins.

  47. 2010

    In Nag Hammadi, Egypt, Muslim gunmen opened fire on a crowd of Coptic Christians leaving church after attending Christmas Liturgy, killing eight of them, as well as one Muslim bystander.

    Africa · Nag Hammadi massacreWikipedia: Nag Hammadi massacre
  48. 2012

    A hot air balloon crashes near Carterton, New Zealand, killing all 11 people on board.

    Oceania · 2012 Carterton hot air balloon crashWikipedia: 2012 Carterton hot air balloon crash
  49. 2015

    A car bomb explodes outside a police college in the Yemeni capital Sanaa with at least 38 people reported dead and more than 63 injured.

    Asia · January 2015 Sanaa bombingWikipedia: January 2015 Sanaa bombing
  50. 2015

    Two gunmen commit mass murder at the offices of Charlie Hebdo in Paris, executing twelve people and wounding eleven others.

    Europe · Charlie Hebdo shootingWikipedia: Charlie Hebdo shooting
  51. 2020

    After 253 days without an operational government, a second round of investiture votes produced Spain's first coalition government since the Second Republic.

    Europe · Second Spanish RepublicWikipedia: 2019–2020 Spanish government formation
  52. 2020

    The 6.4Mw 2019–20 Puerto Rico earthquakes kill four and injure nine in southern Puerto Rico.

    Latin America · 2019–20 Puerto Rico earthquakesWikipedia: 2019–20 Puerto Rico earthquakes
  53. 2023

    The longest U.S. House of Representatives speaker election since the December 1859 – February 1860 U.S. speaker election concludes and Kevin McCarthy is elected 55th Speaker of the United States House of Representatives.

  54. 2025

    A series of wildfires ravage the Greater Los Angeles area, resulting in at least 16 deaths and 13,401 structures destroyed.

    North America · Greater Los AngelesWikipedia: January 2025 Southern California wildfires

Who was born on 7 January

In order of how many Wikipedia editions have an article about each. The first 60 of 163 are shown.

  1. 1800

    Millard Fillmore, American politician, 13th President of the United States (died 1874)

    SummerhillWikipedia: Millard Fillmore
  2. 1971

    Jeremy Renner, American actor

    ModestoWikipedia: Jeremy Renner
  3. 1964

    Nicolas Cage, American actor

    Long BeachWikipedia: Nicolas Cage
  4. 1985

    Lewis Hamilton, English racing driver

    StevenageWikipedia: Lewis Hamilton
  5. 1502

    Pope Gregory XIII (died 1585)

    BolognaWikipedia: Pope Gregory XIII
  6. 1991

    Eden Hazard, Belgian footballer

    La LouvièreWikipedia: Eden Hazard
  7. 1970

    Andy Burnham, English politician, Prime Minister of the United Kingdom

    AintreeWikipedia: Andy Burnham
  8. 1858

    Eliezer Ben-Yehuda, Belarusian lexicographer and journalist (died 1922)

    LužkiWikipedia: Eliezer Ben-Yehuda
  9. 1962

    Aleksandr Dugin, Russian political analyst and strategist known for his fascist views

    MoscowWikipedia: Aleksandr Dugin
  10. 1768

    Joseph Bonaparte, Italian king (died 1844)

    CorteWikipedia: Joseph Bonaparte
  11. 1844

    Bernadette Soubirous, French nun and saint (died 1879)

    LourdesWikipedia: Bernadette Soubirous
  12. 1891

    Zora Neale Hurston, American novelist, short story writer, and folklorist (died 1960)

    NotasulgaWikipedia: Zora Neale Hurston
  13. 1873

    Charles Péguy, French poet and journalist (died 1914)

    OrléansWikipedia: Charles Péguy
  14. 1899

    Francis Poulenc, French pianist and composer (died 1963)

    ParisWikipedia: Francis Poulenc
  15. 1941

    John E. Walker, English chemist and academic, Nobel Prize laureate

    HalifaxWikipedia: John E. Walker
  16. 1871

    Émile Borel, French mathematician and politician (died 1956)

    Saint-AffriqueWikipedia: Émile Borel
  17. 1934

    Tassos Papadopoulos, Cypriot lawyer and politician, 5th President of Cyprus (died 2008)

    Ayios Antonios, NicosiaWikipedia: Tassos Papadopoulos
  18. 1963

    Rand Paul, American politician and physician

    PittsburghWikipedia: Rand Paul
  19. 1967

    Nick Clegg, English academic and politician, Deputy Prime Minister of the United Kingdom

    Chalfont St GilesWikipedia: Nick Clegg
  20. 1977

    Sofi Oksanen, Finnish author and playwright

    JyväskyläWikipedia: Sofi Oksanen
  21. 1925

    Gerald Durrell, Indian-English zookeeper, conservationist and author, founded Durrell Wildlife Park (died 1995)

    JamshedpurWikipedia: Gerald Durrell
  22. 1943

    Sadako Sasaki, Japanese survivor of the atomic bombing of Hiroshima, known for one thousand origami cranes (died 1955)

    HiroshimaWikipedia: Sadako Sasaki
  23. 1987

    Davide Astori, Italian footballer (died 2018)

    San Giovanni BiancoWikipedia: Davide Astori
  24. 1991

    Caster Semenya, South African sprinter

    PolokwaneWikipedia: Caster Semenya
  25. 1956

    David Caruso, American actor

    Forest HillsWikipedia: David Caruso
  26. 1982

    Lauren Cohan, American-English actress

    Cherry HillWikipedia: Lauren Cohan
  27. 1988

    Haley Bennett, American actress and singer

    Fort MyersWikipedia: Haley Bennett
  28. 1945

    Raila Odinga, Kenyan engineer and politician, 2nd Prime Minister of Kenya (died 2025)

    MasenoWikipedia: Raila Odinga
  29. 1952

    Sammo Hung, Hong Kong actor, director, producer, and martial artist

    Hong KongWikipedia: Sammo Hung
  30. 1830

    Albert Bierstadt, American painter (died 1902)

    SolingenWikipedia: Albert Bierstadt
  31. 1827

    Sandford Fleming, Scottish-Canadian engineer, created Universal Standard Time (died 1915)

    KirkcaldyWikipedia: Sandford Fleming
  32. 1935

    Valery Kubasov, Russian engineer and astronaut (died 2014)

    VyaznikiWikipedia: Valery Kubasov
  33. 1990

    Gregor Schlierenzauer, Austrian ski jumper

    FulpmesWikipedia: Gregor Schlierenzauer
  34. 1928

    William Peter Blatty, American author and screenwriter (died 2017)

    New York CityWikipedia: William Peter Blatty
  35. 1961

    John Thune, American lawyer and politician

    PierreWikipedia: John Thune
  36. 1987

    Lyndsy Fonseca, American actress

    OaklandWikipedia: Lyndsy Fonseca
  37. 1957

    Katie Couric, American television journalist, anchor, and author

    Arlington CountyWikipedia: Katie Couric
  38. 1873

    Adolph Zukor, Hungarian-American film producer, co-founded Paramount Pictures (died 1976)

    RicseWikipedia: Adolph Zukor
  39. 1950

    Juan Gabriel, Mexican singer-songwriter (died 2016)

    ParácuaroWikipedia: Juan Gabriel
  40. 1834

    Johann Philipp Reis, German physicist and academic, invented the Reis telephone (died 1874)

    GelnhausenWikipedia: Johann Philipp Reis
  41. 1912

    Charles Addams, American cartoonist, created The Addams Family (died 1988)

    WestfieldWikipedia: Charles Addams
  42. 1942

    Vasily Alekseyev, Russian-German weightlifter and coach (died 2011)

  43. 1990

    Liam Aiken, American actor

    New York CityWikipedia: Liam Aiken
  44. 1922

    Jean-Pierre Rampal, French flute player (died 2000)

    MarseilleWikipedia: Jean-Pierre Rampal
  45. 1995

    Yulia Putintseva, Kazakhstani tennis player

    MoscowWikipedia: Yulia Putintseva
  46. 1948

    Kenny Loggins, American singer-songwriter

    EverettWikipedia: Kenny Loggins
  47. 1969

    Marco Simone, Italian footballer and manager

    CastellanzaWikipedia: Marco Simone
  48. 1979

    Aloe Blacc, American musician, singer, songwriter, record producer, actor, businessman and philanthropist

    Newport BeachWikipedia: Aloe Blacc
  49. 1983

    Brett Dalton, American actor

    San JoseWikipedia: Brett Dalton
  50. 1985

    Wayne Routledge, English footballer

    SidcupWikipedia: Wayne Routledge
  51. 1929

    Terry Moore, American actress

    Los AngelesWikipedia: Terry Moore
  52. 1875

    Gustav Flatow, German gymnast (died 1945)

    KościerzynaWikipedia: Gustav Flatow
  53. 1926

    Kim Jong-pil, South Korean lieutenant and politician, 11th Prime Minister of South Korea (died 2018)

    Buyeo CountyWikipedia: Kim Jong-pil
  54. 1920

    Vincent Gardenia, Italian-American actor (died 1992)

    NaplesWikipedia: Vincent Gardenia
  55. 1797

    Mariano Paredes, Mexican general and 16th president (1845–1846) (died 1849)

    Mexico CityWikipedia: Mariano Paredes
  56. 1355

    Thomas of Woodstock, Duke of Gloucester, English politician, Lord High Constable of England (died 1397)

  57. 1647

    William Louis, Duke of Württemberg (died 1677)

  58. 2012

    Blue Ivy Carter, American singer and actress

    New York CityWikipedia: Blue Ivy Carter
  59. 1977

    Dustin Diamond, American actor and comedian (died 2021)

    San JoseWikipedia: Dustin Diamond
  60. 1997

    Lamar Jackson, American football player

    Pompano BeachWikipedia: Lamar Jackson

What is celebrated on 7 January

  • Christian Feast Day: André Bessette (Canada)
  • Christian Feast Day: Blessed Marie Thérèse Haze
  • Christian Feast Day: Canute Lavard
  • Christian Feast Day: Felix and Januarius
  • Christian Feast Day: Lucian of Antioch
  • Christian Feast Day: Raymond of Penyafort
  • Christian Feast Day: Synaxis of John the Forerunner & Baptist (Julian calendar)
  • Christian Feast Day: January 7 (Eastern Orthodox liturgics)
  • Christmas (Eastern Orthodox Churches and Oriental Orthodox Churches using the Julian calendar, Rastafari) Christmas in Russia
  • Christmas (Eastern Orthodox Churches and Oriental Orthodox Churches using the Julian calendar, Rastafari) Christmas in Ukraine
  • Christmas (Eastern Orthodox Churches and Oriental Orthodox Churches using the Julian calendar, Rastafari) Christmas in Serbia
  • Christmas (Eastern Orthodox Churches and Oriental Orthodox Churches using the Julian calendar, Rastafari) Ethiopian Christmas
  • Christmas (Eastern Orthodox Churches and Oriental Orthodox Churches using the Julian calendar, Rastafari) Remembrance Day of the Dead (Armenia)
  • Distaff Day (medieval Europe)

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