A day on the globeROENES中文
The Earth on 25 February, with the rays of the day’s events
  1. A birthday on the globe

    25 February on the globe: what happened in the world on this day, and who was born

    For 25 February, the English Wikipedia lists 32 events and 157 births. 20 of the events stand at their places as rays of light; six 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 25 February

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

    On 25 February the Sun passes straight overhead at noon along the parallel of 9.3° south. In London, the day lasts about 10 hours 35 minutes.

    Beyond 81° south the Sun no longer sets; beyond 81° 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. 25 February

    Europe#

    10 events from the day’s list are placed here, between 1705 and 2009.

    The globe stops at two of them; the whole list is further down. All 10

  4. Europe · Hamburg

    1705

    George Frideric Handel's opera Nero premieres in Hamburg.

    On the map: Hamburg.

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

    Wikipedia: George Frideric Handel

  5. Europe · Budapest

    1991

    Disbandment of the Warsaw Pact at a meeting of its members in Budapest.

    On the map: Budapest.

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

    Wikipedia: Warsaw Pact

  6. 25 February

    Latin America and the Caribbean#

    Two events from the day’s list are placed here, between 1951 and 1980.

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

  7. Latin America · Buenos Aires

    1951

    The first Pan American Games are officially opened in Buenos Aires by Argentine President Juan Perón.

    On the map: Buenos Aires.

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

    Wikipedia: Pan American Games

  8. 25 February

    North America#

    Five events from the day’s list are placed here, between 1843 and 2016.

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

  9. North America · Calaveras County, California

    1866

    Miners in Calaveras County, California, discovered a human skull that was taken to show that humans had existed during the Pliocene, a thesis that was later disproved.

    On the map: Calaveras County, California.

    Wikipedia: Calaveras County, California

  10. North America · United States Congress

    1870

    Hiram Rhodes Revels, a Republican from Mississippi, is sworn into the United States Senate, becoming the first African American ever to sit in Congress.

    On the map: United States Congress.

    Wikipedia: United States Congress

  11. North America · Newport News, Virginia

    1933

    Launch of the USS Ranger at Newport News, Virginia. It is the first purpose-built aircraft carrier to be commissioned by the US Navy.

    On the map: Newport News, Virginia.

    Wikipedia: United States Navy

  12. 25 February

    What the other Wikipedias remember#

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

  13. From Wikipedia in Romanian · 1952 Winter Olympics

    1952

    Closing ceremony of the Winter Olympic Games in Oslo, Norway.

    On the map: 1952 Winter Olympics.

    Translated from the list on Wikipedia in Romanian.

    The article on Wikipedia in Romanian: Jocurile Olimpice de iarnă din 1952

  14. From Wikipedia in Spanish · Seoul

    2003

    In Seoul (South Korea), the new president Roh Moo-hyun, successor to Kim Dae-jung, is sworn into office.

    On the map: Seoul.

    Translated from the list on Wikipedia in Spanish.

    The article on Wikipedia in Spanish: Seúl

  15. From Wikipedia in Spanish · 2018 Winter Olympics

    2018

    In Pyeongchang (South Korea), the XXIII Winter Olympic Games end.

    On the map: 2018 Winter Olympics.

    Translated from the list on Wikipedia in Spanish.

    The article on Wikipedia in Spanish: Juegos Olímpicos de Pieonchang 2018

  16. 25 February

    Born on 25 February#

    The English Wikipedia lists 157 births for this day. The blue points are the birthplaces of 60 of these people: those written about in the most Wikipedia editions, where Wikidata gives a place of birth.

  17. Born on 25 February

    1943

    George Harrison, English singer-songwriter, guitarist and film producer (died 2001)

    Place of birth: 12 Arnold Grove.

    Wikipedia: George Harrison

  18. Born on 25 February

    1841

    Pierre-Auguste Renoir, French painter and sculptor (died 1919)

    Place of birth: Limoges.

    Wikipedia: Pierre-Auguste Renoir

  19. Born on 25 February

    1707

    Carlo Goldoni, Italian playwright and composer (died 1793)

    Place of birth: Venice.

    Wikipedia: Carlo Goldoni

  20. Born on 25 February

    1871

    Lesya Ukrainka, Ukrainian poet and playwright (died1913)

    Place of birth: Zviahel.

    Wikipedia: Lesya Ukrainka

  21. Born on 25 February

    1917

    Anthony Burgess, English author, playwright, and critic (died 1993)

    Place of birth: Harpurhey.

    Wikipedia: Anthony Burgess

  22. Born in Britain and Ireland

    1986

    Jameela Jamil, English actress and presenter

    Place of birth: Hampstead.

    Wikipedia: Jameela Jamil

  23. Born in Britain and Ireland

    1937

    Tom Courtenay, English actor

    Place of birth: Kingston upon Hull.

    Wikipedia: Tom Courtenay

  24. Born in Britain and Ireland

    1950

    Neil Jordan, Irish film director, screenwriter and author

    Place of birth: Sligo.

    Wikipedia: Neil Jordan

  25. The whole globe of the day

    Drag the globe to turn it. Touch a ray or a point to read what happened there.

Everything Wikipedia lists for 25 February

The list is the English Wikipedia’s, in its own wording, as it stood in October 2026. Six 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. 138

    Roman emperor Hadrian adopts Antoninus Pius as his son, effectively making him his successor.

    no place on the mapWikipedia: Roman emperor
  2. 628

    Khosrow II, the last great Shah of the Sasanian Empire (Iran), is overthrown by his son Kavadh II.

    Asia · Sasanian EmpireWikipedia: Khosrow II
  3. 1705

    George Frideric Handel's opera Nero premieres in Hamburg.

    Europe · HamburgWikipedia: George Frideric Handel
  4. 1836

    Samuel Colt is granted a United States patent for his revolver firearm.

    no place on the mapWikipedia: Samuel Colt
  5. 1843

    Lord George Paulet occupies the Kingdom of Hawaii in the name of Great Britain in the Paulet affair.

    North America · Paulet affairWikipedia: Paulet affair
  6. 1866

    Miners in Calaveras County, California, discovered a human skull that was taken to show that humans had existed during the Pliocene, a thesis that was later disproved.

    North America · Calaveras County, CaliforniaWikipedia: Calaveras County, California
  7. 1870

    Hiram Rhodes Revels, a Republican from Mississippi, is sworn into the United States Senate, becoming the first African American ever to sit in Congress.

    North America · United States CongressWikipedia: United States Congress
  8. 1875

    Guangxu Emperor of Qing dynasty China begins his reign, under Empress Dowager Cixi's regency.

    Asia · Qing dynastyWikipedia: Guangxu Emperor
  9. 1912

    Marie-Adélaïde, the eldest of six daughters of Guillaume IV, becomes the first reigning Grand Duchess of Luxembourg.

  10. 1916

    World War I: In the Battle of Verdun, a German unit captures Fort Douaumont, keystone of the French defences, without a fight.

    Europe · Battle of VerdunWikipedia: World War I
  11. 1918

    World War I: German forces capture Tallinn to virtually complete the occupation of Estonia.

    Europe · TallinnWikipedia: Tallinn
  12. 1921

    Georgian capital Tbilisi falls to the invading Russian forces after heavy fighting and the Russians declare the Georgian Soviet Socialist Republic.

    Asia · TbilisiWikipedia: Soviet invasion of Georgia
  13. 1932

    Adolf Hitler, having been stateless for seven years, obtains German citizenship when he is appointed a Brunswick state official by Dietrich Klagges, a fellow Nazi. As a result, Hitler is able to run for Reichspräsident in the 1932 election.

    no place on the mapWikipedia: Adolf Hitler
  14. 1933

    Launch of the USS Ranger at Newport News, Virginia. It is the first purpose-built aircraft carrier to be commissioned by the US Navy.

    North America · Newport News, VirginiaWikipedia: United States Navy
  15. 1939

    As part of British air raid precautions, the first of 2.5 million Anderson shelters is constructed in a garden in Islington, north London.

    Britain & Ireland · IslingtonWikipedia: Air Raid Precautions
  16. 1941

    The outlawed Communist Party of the Netherlands organises a general strike in German-occupied Amsterdam to protest against Nazi persecution of Dutch Jews.

    Europe · AmsterdamWikipedia: February strike
  17. 1947

    Soviet NKVD forces in Hungary abduct Béla Kovács—secretary-general of the majority Independent Smallholders' Party—and deport him to the USSR in defiance of Parliament. His arrest is an important turning point in the Communist takeover of Hungary.

    Europe · Second Hungarian RepublicWikipedia: NKVD
  18. 1947

    The formal abolition of Prussia is proclaimed by the Allied Control Council, the Prussian government having already been abolished by the Preußenschlag of 1932.

  19. 1948

    In a coup d'état led by Klement Gottwald, the Communist Party of Czechoslovakia takes control of government in Prague to end the Third Czechoslovak Republic.

    Europe · PragueWikipedia: 1948 Czechoslovak coup d'état
  20. 1951

    The first Pan American Games are officially opened in Buenos Aires by Argentine President Juan Perón.

    Latin America · Buenos AiresWikipedia: Pan American Games
  21. 1956

    In his speech On the Cult of Personality and Its Consequences, Nikita Khrushchev, leader of the Soviet Union, denounces Stalin.

  22. 1980

    The government of Suriname is overthrown by a military coup led by Dési Bouterse.

    Latin America · 1980 Surinamese coup d'étatWikipedia: 1980 Surinamese coup d'état
  23. 1986

    People Power Revolution: President of the Philippines Ferdinand Marcos flees the nation after 20 years of rule; Corazon Aquino becomes the Philippines' first female president.

    Asia · PhilippinesWikipedia: People Power Revolution
  24. 1991

    Disbandment of the Warsaw Pact at a meeting of its members in Budapest.

    Europe · BudapestWikipedia: Warsaw Pact
  25. 1994

    American-Israeli extremist Baruch Goldstein commits a mass shooting at the Cave of the Patriarchs mausoleum, leaving 29 dead and over 100 injured before he is disarmed and beaten to death by survivors.

    Asia · Cave of the Patriarchs massacreWikipedia: Cave of the Patriarchs massacre
  26. 1999

    Alitalia Flight 1553 crashes at Genoa Cristoforo Colombo Airport in Genoa, Italy, killing four.

    Europe · Minerva Airlines Flight 1553Wikipedia: Minerva Airlines Flight 1553
  27. 2009

    Soldiers of the Bangladesh Rifles mutiny at their headquarters in Pilkhana, Dhaka, Bangladesh, resulting in 74 deaths, including 57 army officials.

    Asia · Bangladesh Rifles revoltWikipedia: Bangladesh Rifles revolt
  28. 2009

    Turkish Airlines Flight 1951 crashes during landing at the Amsterdam Schiphol Airport, Netherlands, primarily due to a faulty radio altimeter, resulting in the death of nine passengers and crew including all three pilots.

    Europe · Turkish Airlines Flight 1951Wikipedia: Turkish Airlines Flight 1951
  29. 2015

    At least 310 people are killed in avalanches in northeastern Afghanistan.

    Asia · Panjshir ProvinceWikipedia: 2015 Afghanistan avalanches
  30. 2016

    Three people are killed and fourteen others injured in a series of shootings in the small Kansas cities of Newton and Hesston.

    North America · HesstonWikipedia: Hesston shootings
  31. 2020

    Hong Kong–based writer and publisher Gui Minhai, known for writing about Chinese Communist Party politicians, was sentenced to ten years' imprisonment for intelligence violations.

    no place on the mapWikipedia: Gui Minhai
  32. 2026

    Four people are killed and several more are injured when Cuban Border Guard Troops confront and open fire on a US-registered speedboat violating Cuban waters.

What the other Wikipedias remember

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

  1. 1952

    Closing ceremony of the Winter Olympic Games in Oslo, Norway.

    Europe · 1952 Winter OlympicsTranslated from the list on Wikipedia in RomanianWikipedia: Jocurile Olimpice de iarnă din 1952
  2. 2003

    In Seoul (South Korea), the new president Roh Moo-hyun, successor to Kim Dae-jung, is sworn into office.

    Asia · SeoulTranslated from the list on Wikipedia in SpanishWikipedia: Seúl
  3. 2018

    In Pyeongchang (South Korea), the XXIII Winter Olympic Games end.

    Asia · 2018 Winter OlympicsTranslated from the list on Wikipedia in SpanishWikipedia: Juegos Olímpicos de Pieonchang 2018

Who was born on 25 February

In order of how many Wikipedia editions have an article about each. The first 60 of 157 are shown.

  1. 1943

    George Harrison, English singer-songwriter, guitarist and film producer (died 2001)

    12 Arnold GroveWikipedia: George Harrison
  2. 1841

    Pierre-Auguste Renoir, French painter and sculptor (died 1919)

    LimogesWikipedia: Pierre-Auguste Renoir
  3. 1707

    Carlo Goldoni, Italian playwright and composer (died 1793)

    VeniceWikipedia: Carlo Goldoni
  4. 1871

    Lesya Ukrainka, Ukrainian poet and playwright (died1913)

    ZviahelWikipedia: Lesya Ukrainka
  5. 1778

    José de San Martín, Argentinian general and politician, 1st President of Peru (died 1850)

    YapeyúWikipedia: José de San Martín
  6. 1866

    Benedetto Croce, Italian philosopher and politician (died 1952)

    PescasseroliWikipedia: Benedetto Croce
  7. 1873

    Enrico Caruso, Italian-American tenor; the most popular operatic tenor of the early 20th century and the first great recording star. (died 1921)

    NaplesWikipedia: Enrico Caruso
  8. 1950

    Néstor Kirchner, Argentine politician; 51st President of Argentina (died 2010)

    Río GallegosWikipedia: Néstor Kirchner
  9. 1917

    Anthony Burgess, English author, playwright, and critic (died 1993)

    HarpurheyWikipedia: Anthony Burgess
  10. 1953

    José María Aznar, Spanish politician; Prime Minister of Spain, 1996–2004

    MadridWikipedia: José María Aznar
  11. 1949

    Amin Maalouf, Lebanese-French journalist and author

    BeirutWikipedia: Amin Maalouf
  12. 1842

    Karl May, German author, poet, and playwright (died 1912)

    ErnstthalWikipedia: Karl May
  13. 1981

    Park Ji-sung, South Korean footballer

    SeoulWikipedia: Park Ji-sung
  14. 1643

    Ahmed II, Ottoman sultan (died 1695)

    ConstantinopleWikipedia: Ahmed II
  15. 1999

    Gianluigi Donnarumma, Italian footballer

    Castellammare di StabiaWikipedia: Gianluigi Donnarumma
  16. 1881

    Alexei Rykov, Russian politician, Premier of Russia (died 1938)

    SaratovWikipedia: Alexei Rykov
  17. 1965

    Carrot Top, American comedian

    RockledgeWikipedia: Carrot Top
  18. 1971

    Sean Astin, American actor, director and producer

    Santa MonicaWikipedia: Sean Astin
  19. 1888

    John Foster Dulles, American soldier, lawyer, and politician, 52nd United States Secretary of State (died 1959)

    Washington, D.C.Wikipedia: John Foster Dulles
  20. 1966

    Téa Leoni, American actress

    New York CityWikipedia: Téa Leoni
  21. 1885

    Princess Alice of Battenberg, mother of Prince Philip, Duke of Edinburgh (died 1969)

    Windsor CastleWikipedia: Princess Alice of Battenberg
  22. 1976

    Rashida Jones, American actress and writer

    Los AngelesWikipedia: Rashida Jones
  23. 1974

    Dominic Raab, English politician; First Secretary of State and Secretary of State for Foreign and Commonwealth Affairs

    BuckinghamshireWikipedia: Dominic Raab
  24. 1982

    Flavia Pennetta, Italian tennis player

    BrindisiWikipedia: Flavia Pennetta
  25. 1957

    Tharman Shanmugaratnam, Singaporean economist and politician; 5th Senior Minister and 9th President of Singapore

    SingaporeWikipedia: Tharman Shanmugaratnam
  26. 1894

    Meher Baba, Indian spiritual master (died 1969)

    PuneWikipedia: Meher Baba
  27. 1865

    Andranik, Armenian general (died 1927)

    ŞebinkarahisarWikipedia: Andranik
  28. 1997

    Isabelle Fuhrman, American actress

    Washington, D.C.Wikipedia: Isabelle Fuhrman
  29. 1845

    George Reid, Scottish-Australian lawyer and politician, 4th Prime Minister of Australia (died 1918)

    JohnstoneWikipedia: George Reid
  30. 1925

    Shehu Shagari, Nigerian politician, 6th President of Nigeria (died 2018)

    ShagariWikipedia: Shehu Shagari
  31. 1986

    Jameela Jamil, English actress and presenter

    HampsteadWikipedia: Jameela Jamil
  32. 1907

    Sabahattin Ali, Turkish journalist, author, and poet (died 1948)

    ArdinoWikipedia: Sabahattin Ali
  33. 1928

    Paul Elvstrøm, Danish yachtsman (died 2016)

    HellerupWikipedia: Paul Elvstrøm
  34. 1985

    Joakim Noah, French-American basketball player

    New York CityWikipedia: Joakim Noah
  35. 1913

    Gert Fröbe, German actor (died 1988)

    OberplanitzWikipedia: Gert Fröbe
  36. 1896

    Ida Noddack, German chemist and physicist (died 1978)

    WeselWikipedia: Ida Noddack
  37. 1937

    Tom Courtenay, English actor

    Kingston upon HullWikipedia: Tom Courtenay
  38. 1949

    Ric Flair, American professional wrestler

    MemphisWikipedia: Ric Flair
  39. 1980

    Kash Patel, American lawyer, former federal prosecutor and official

    Garden CityWikipedia: Kash Patel
  40. 1999

    Matvey Safonov, Russian footballer

    StavropolWikipedia: Matvey Safonov
  41. 1962

    Birgit Fischer, German kayaker

    Brandenburg an der HavelWikipedia: Birgit Fischer
  42. 1950

    Neil Jordan, Irish film director, screenwriter and author

    SligoWikipedia: Neil Jordan
  43. 1670

    Maria Margarethe Kirch, German astronomer and mathematician (died 1720)

    PanitzschWikipedia: Maria Margaretha Kirch
  44. 1938

    Diane Baker, American actress and producer

    HollywoodWikipedia: Diane Baker
  45. 1946

    Jean Todt, French racing driver and team manager

    PierrefortWikipedia: Jean Todt
  46. 1883

    Princess Alice, Countess of Athlone (died 1981)

    Windsor CastleWikipedia: Princess Alice, Countess of Athlone
  47. 1901

    Zeppo Marx, American comedian and theatrical agent (died 1979)

    ManhattanWikipedia: Zeppo Marx
  48. 1932

    Tony Brooks, English racing driver (died 2022)

    DukinfieldWikipedia: Tony Brooks
  49. 1944

    François Cevert, French racing driver (died 1973)

    13th arrondissement of ParisWikipedia: François Cevert
  50. 1975

    Chelsea Handler, American comedian, actress, author, and television host

    LivingstonWikipedia: Chelsea Handler
  51. 1682

    Giovanni Battista Morgagni, Italian anatomist and pathologist (died 1771)

  52. 1973

    Anson Mount, American actor

    White BluffWikipedia: Anson Mount
  53. 1971

    Daniel Powter, Canadian singer-songwriter and musician

    VernonWikipedia: Daniel Powter
  54. 1966

    Alexis Denisof, American actor

    SalisburyWikipedia: Alexis Denisof
  55. 1968

    Oumou Sangaré, Malian musician

    BamakoWikipedia: Oumou Sangaré
  56. 1995

    Mario Hezonja, Croatian basketball player

    DubrovnikWikipedia: Mario Hezonja
  57. 2005

    Noah Jupe, English actor

    London Borough of IslingtonWikipedia: Noah Jupe
  58. 1918

    Bobby Riggs, American tennis player (died 1995)

    Los AngelesWikipedia: Bobby Riggs
  59. 1989

    Kana Hanazawa, Japanese voice actress and singer

    TokyoWikipedia: Kana Hanazawa
  60. 1947

    Lee Evans, American sprinter and athletics coach (died 2021)

    MaderaWikipedia: Lee Evans

What is celebrated on 25 February

  • Christian feast days: Æthelberht of Kent
  • Christian feast days: Blessed Ciriaco María Sancha y Hervás
  • Christian feast days: Gerland of Agrigento
  • Christian feast days: John Roberts, writer and missionary (Anglican Communion)
  • Christian feast days: Hamburg Matthiae-mahl, feast of Hanseatic League cities on the mediaeval first day of spring
  • Christian feast days: Blessed Maria Adeodata Pisani
  • Christian feast days: Blessed Robert of Arbrissel, founder of Fontevraud Abbey
  • Christian feast days: Saint Walpurga (she was canonised on 1 May c. 870 and Walpurgis Night is celebrated 30 April)
  • Christian feast days: February 25 (Eastern Orthodox liturgics)
  • Kitano Baika-sai or "Plum Blossom Festival" (Kitano Tenman-gu Shrine, Kyoto, Japan)
  • Memorial Day for the Victims of the Communist Dictatorships (Hungary)
  • National Day (Kuwait)
  • People Power Day (Philippines)
  • Revolution Day in Suriname

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