A day on the globeROENES中文
The Earth on 28 March, with the rays of the day’s events
  1. A birthday on the globe

    28 March on the globe: what happened in the world on this day, and who was born

    For 28 March, the English Wikipedia lists 50 events and 178 births. 28 of the events stand at their places as rays of light; three more are dashed circles, where the sentence links only to a country or a sea. The taller the ray, the longer ago it happened. The people born that day come further down, as blue points.

    A birthday, yours or someone else’s:

  2. The Earth on 28 March

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

    On 28 March the Sun passes straight overhead at noon along the parallel of 3.2° north. In London, the day lasts about 12 hours 45 minutes.

    Beyond 87° north the Sun no longer sets; beyond 87° south it no longer rises.

    The line between day and night is tilted on the globe exactly as on this day of the year. On the dark side you can see the lights of towns.

  3. 28 March

    Britain and Ireland#

    Two events from the day’s list are placed here, between 1646 and 1902.

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

  4. Britain & Ireland · Keswick School of Industrial Art

    1902

    The Hexham Abbey high-altar cross, amongst the most important works produced that year by the Keswick School of Industrial Art, was unveiled on Good Friday.

    On the map: Keswick School of Industrial Art.

    Wikipedia: Hexham Abbey high-altar cross

  5. 28 March

    Europe#

    13 events from the day’s list are placed here, between 1566 and 2020.

    The globe stops at one of them; the whole list is further down. All 13

  6. Europe · Athens International Airport

    2001

    Athens International Airport Eleftherios Venizelos begins operation.

    On the map: Athens International Airport.

    Wikipedia: Athens International Airport

  7. 28 March

    North America#

    Six events from the day’s list are placed here, between 1776 and 1979.

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

  8. North America · Presidio of San Francisco

    1776

    Juan Bautista de Anza finds the site for the Presidio of San Francisco.

    On the map: Presidio of San Francisco.

    Wikipedia: Juan Bautista de Anza

  9. North America · Supreme Court of the United States

    1978

    The US Supreme Court hands down 5–3 decision in Stump v. Sparkman, a controversial case involving involuntary sterilization and judicial immunity.

    On the map: Supreme Court of the United States.

    Wikipedia: Supreme Court of the United States

  10. 28 March

    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 Romanian and were translated for this page.

  11. From Wikipedia in Chinese · Supreme Court of the United States

    1898

    The United States Supreme Court rules in United States v. Wong Kim Ark, holding that all persons born within the United States are United States citizens.

    On the map: Supreme Court of the United States.

    Translated from the list on Wikipedia in Chinese.

    The article on Wikipedia in Chinese: 美国最高法院

  12. From Wikipedia in Romanian · Constantinople

    1930

    The Turkish cities of Constantinople and Angora change their names to Istanbul and Ankara respectively.

    On the map: Constantinople.

    Translated from the list on Wikipedia in Romanian.

    The article on Wikipedia in Romanian: Ankara

  13. From Wikipedia in Chinese · Taipei Metro

    1996

    The Muzha Line of the Taipei Metro formally opens to service, as the first metro line in Taiwan.

    On the map: Taipei Metro.

    Translated from the list on Wikipedia in Chinese.

    The article on Wikipedia in Chinese: 台北捷运

  14. 28 March

    Born on 28 March#

    The English Wikipedia lists 178 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.

  15. Born on 28 March

    1986

    Lady Gaga, American singer-songwriter and actress

    Place of birth: Lenox Hill Hospital.

    Wikipedia: Lady Gaga

  16. Born on 28 March

    1868

    Maxim Gorky, Russian novelist, short story writer, and playwright (died 1936)

    Place of birth: Nizhny Novgorod.

    Wikipedia: Maxim Gorky

  17. Born on 28 March

    1930

    Jerome Isaac Friedman, American physicist and academic, Nobel Prize laureate

    Place of birth: Chicago.

    Wikipedia: Jerome Isaac Friedman

  18. Born on 28 March

    1942

    Daniel Dennett, American philosopher and academic (died 2024)

    Wikipedia: Daniel Dennett

  19. Born on 28 March

    1985

    Stanislas Wawrinka, Swiss tennis player

    Place of birth: Lausanne.

    Wikipedia: Stan Wawrinka

  20. Born in Britain and Ireland

    1921

    Dirk Bogarde, English actor and author (died 1999)

    Place of birth: West Hampstead.

    Wikipedia: Dirk Bogarde

  21. Born in Britain and Ireland

    1942

    Mike Newell, English director and producer

    Place of birth: St Albans.

    Wikipedia: Mike Newell

  22. Born in Britain and Ireland

    1902

    Flora Robson, English actress (died 1984)

    Place of birth: South Shields.

    Wikipedia: Flora Robson

  23. 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 28 March

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. 37

    Roman emperor Caligula accepts the titles of the Principate, bestowed on him by the Senate.

    no place on the mapWikipedia: Roman emperor
  2. 193

    After assassinating the Roman Emperor Pertinax, his Praetorian Guards auction off the throne to Didius Julianus.

    no place on the mapWikipedia: Assassination
  3. 364

    Roman Emperor Valentinian I appoints his brother Flavius Valens co-emperor.

    no place on the mapWikipedia: Valentinian I
  4. 1065

    The Great German Pilgrimage, which had been under attack by Bedouin bandits for three days, is rescued by the Fatimid governor of Ramla.

  5. 1566

    The foundation stone of Valletta, Malta's capital city, is laid by Jean Parisot de Valette, Grand Master of the Sovereign Military Order of Malta.

    Europe · VallettaWikipedia: Valletta
  6. 1646

    Irish Confederate Wars: Donough MacCarty, 1st Earl of Clancarty, signed the First Ormond Peace for the Confederates in exchange for greater freedom of religion.

    Britain & Ireland · Confederate IrelandWikipedia: Irish Confederate Wars
  7. 1745

    War of the Austrian Succession: In the Battle of Vilshofen, Austrian forces defeat French forces.

  8. 1776

    Juan Bautista de Anza finds the site for the Presidio of San Francisco.

    North America · Presidio of San FranciscoWikipedia: Juan Bautista de Anza
  9. 1795

    Partitions of Poland: The Duchy of Courland and Semigallia, a northern fief of the Polish–Lithuanian Commonwealth, ceases to exist and becomes part of Imperial Russia.

  10. 1801

    Treaty of Florence is signed, ending the war between the French Republic and the Kingdom of Naples.

  11. 1802

    Heinrich Wilhelm Matthäus Olbers discovers 2 Pallas, the second asteroid ever to be discovered.

  12. 1809

    Peninsular War: France defeats Spain in the Battle of Medellín.

    Europe · Battle of MedellínWikipedia: Battle of Medellín
  13. 1814

    War of 1812: In the Battle of Valparaíso, two American naval vessels are captured by two Royal Navy vessels.

    Latin America · ValparaísoWikipedia: Battle of Valparaíso
  14. 1842

    First concert of the Vienna Philharmonic Orchestra, conducted by Otto Nicolai.

  15. 1854

    Crimean War: France and Britain declare war on Russia.

    no place on the mapWikipedia: Crimean War
  16. 1860

    First Taranaki War: The Battle of Waireka begins.

    Oceania · Taranaki RegionWikipedia: First Taranaki War
  17. 1862

    American Civil War: In the Battle of Glorieta Pass, Union forces stop the Confederate invasion of the New Mexico Territory. The battle began on March 26.

    North America · Battle of Glorieta PassWikipedia: American Civil War
  18. 1902

    The Hexham Abbey high-altar cross, amongst the most important works produced that year by the Keswick School of Industrial Art, was unveiled on Good Friday.

    Britain & Ireland · Keswick School of Industrial ArtWikipedia: Hexham Abbey high-altar cross
  19. 1910

    Henri Fabre becomes the first person to fly a seaplane, the Fabre Hydravion, after taking off from water runway Étang le Barre, near Marseille.

    no place on the mapWikipedia: Fabre Hydravion
  20. 1918

    Finnish Civil War: On the so-called "Bloody Maundy Thursday of Tampere", the Whites force the Reds to attack the city center, where the city's fiercest battles being fought in Kalevankangas with large casualties on both sides. During the same day, an explosion at the Red headquarters of Tampere kills several commanders.

    Europe · TampereWikipedia: Finnish Civil War
  21. 1918

    General John J. Pershing, during World War I, cancels 42nd 'Rainbow' Division's orders to Rolampont for further training and diverted it to the occupy the Baccarat sector. Rainbow Division becomes "the first American division to take over an entire sector on its own, which it held longer than any other American division-occupied sector alone for a period of three months".

    Europe · RolampontWikipedia: World War I
  22. 1920

    Palm Sunday tornado outbreak of 1920 affects the Great Lakes region and Deep South states.

    North America · Great LakesWikipedia: 1920 Palm Sunday tornado outbreak
  23. 1933

    The Imperial Airways biplane City of Liverpool is believed to be the first airliner lost to sabotage when a passenger sets a fire on board.

    Europe · 1933 Imperial Airways Diksmuide crashWikipedia: 1933 Imperial Airways Diksmuide crash
  24. 1935

    The Nazi propaganda film Triumph of the Will, directed by Leni Riefenstahl, premiered in Berlin.

  25. 1939

    Spanish Civil War: Generalissimo Francisco Franco conquers Madrid after a three-year siege.

    Europe · MadridWikipedia: Spanish Civil War
  26. 1941

    World War II: First day of the Battle of Cape Matapan in Greece between the navies of the United Kingdom and Australia, and the Royal Italian navy.

    Europe · Battle of Cape MatapanWikipedia: World War II
  27. 1942

    World War II: A British combined force permanently disables the Louis Joubert Lock in Saint-Nazaire in order to keep the German battleship Tirpitz away from the mid-ocean convoy lanes.

    Europe · St Nazaire RaidWikipedia: St Nazaire Raid
  28. 1946

    Cold War: The United States Department of State releases the Acheson–Lilienthal Report, outlining a plan for the international control of nuclear power.

    no place on the mapWikipedia: Cold War
  29. 1959

    The State Council of the People's Republic of China dissolves the government of Tibet.

    no place on the mapWikipedia: History of Tibet
  30. 1961

    ČSA Flight 511 crashes in Igensdorf, Germany, killing 52.

    Europe · ČSA Flight 511Wikipedia: ČSA Flight 511
  31. 1963

    Civil rights movement: Over one hundred high school students conduct a sit-in protest in Rome, Georgia.

    North America · Rome sit-insWikipedia: Civil rights movement
  32. 1965

    An Mw 7.4 earthquake in Chile sets off a series of tailings dam failures, burying the town of El Cobre and killing at least 500 people.

    Latin America · 1965 La Ligua earthquakeWikipedia: 1965 La Ligua earthquake
  33. 1968

    Brazilian high school student Edson Luís de Lima Souto is killed by military police at a student protest.

  34. 1968

    Colonel Sun, written by Kingsley Amis, was published, becoming the first James Bond novel published after the death of Ian Fleming in 1964.

    no place on the mapWikipedia: Colonel Sun
  35. 1969

    Greek poet and Nobel Prize laureate Giorgos Seferis makes a famous statement on the BBC World Service opposing the junta in Greece.

  36. 1970

    An earthquake strikes western Turkey at about 23:05 local time, killing 1,086 and injuring at least 1,200.

    Asia · 1970 Gediz earthquakeWikipedia: 1970 Gediz earthquake
  37. 1978

    The US Supreme Court hands down 5–3 decision in Stump v. Sparkman, a controversial case involving involuntary sterilization and judicial immunity.

    North America · Supreme Court of the United StatesWikipedia: Supreme Court of the United States
  38. 1979

    A coolant leak at the Three Mile Island's Unit 2 nuclear reactor outside Harrisburg, Pennsylvania leads to the core overheating and a partial meltdown.

    North America · Three Mile Island accidentWikipedia: Three Mile Island accident
  39. 1979

    The British House of Commons passes a vote of no confidence against James Callaghan's government by one vote, precipitating a general election.

  40. 1990

    United States President George H. W. Bush posthumously awards Jesse Owens the Congressional Gold Medal.

    no place on the mapWikipedia: George H. W. Bush
  41. 1994

    In South Africa, African National Congress security guards kill dozens of Inkatha Freedom Party protesters.

    Africa · Shell House massacreWikipedia: Shell House massacre
  42. 1997

    In the Tragedy of Otranto, the Italian Navy vessel Sibilla collided with the Albanian civilian vessel Kateri i Radës, causing the latter to sink and leading to dozens of deaths.

    Europe · Tragedy of OtrantoWikipedia: Tragedy of Otranto
  43. 1999

    Kosovo War: Serb paramilitary and military forces kill at least 130 Kosovo Albanians in Izbica.

    Europe · Izbica massacreWikipedia: Kosovo War
  44. 2001

    Athens International Airport Eleftherios Venizelos begins operation.

    Europe · Athens International AirportWikipedia: Athens International Airport
  45. 2003

    In a friendly fire incident, two American A-10 Thunderbolt II aircraft attack British tanks participating in the 2003 invasion of Iraq, killing one soldier.

    Asia · 190th Fighter Squadron, Blues and Royals friendly fire incidentWikipedia: 190th Fighter Squadron, Blues and Royals friendly fire incident
  46. 2005

    An earthquake shakes northern Sumatra with a magnitude of 8.6 and killing over 1000 people.

    Asia · 2005 Nias–Simeulue earthquakeWikipedia: 2005 Nias–Simeulue earthquake
  47. 2006

    At least one million union members, students and unemployed take to the streets in France in protest at the government's proposed First Employment Contract law.

  48. 2015

    A siege of a hotel in Mogadishu by al-Shabaab militants, which began the previous day and killed at least 20 people, ended with the Somali Armed Forces recapturing the premises.

    Africa · 2015 Makka al-Mukarama hotel attackWikipedia: 2015 Makka al-Mukarama hotel attack
  49. 2020

    The region of Uusimaa (with the capital city Helsinki) is temporarily isolated from the rest of Finland due to increased COVID-19 infections.

    Europe · HelsinkiWikipedia: 2020 Uusimaa lockdown
  50. 2025

    An earthquake strikes close to Mandalay, Myanmar with a magnitude of 7.7, killing over 5400 people.

    Asia · 2025 Myanmar earthquakeWikipedia: 2025 Myanmar earthquake

What the other Wikipedias remember

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

  1. 1898

    The United States Supreme Court rules in United States v. Wong Kim Ark, holding that all persons born within the United States are United States citizens.

    North America · Supreme Court of the United StatesTranslated from the list on Wikipedia in ChineseWikipedia: 美国最高法院
  2. 1930

    The Turkish cities of Constantinople and Angora change their names to Istanbul and Ankara respectively.

    Asia · ConstantinopleTranslated from the list on Wikipedia in RomanianWikipedia: Ankara
  3. 1996

    The Muzha Line of the Taipei Metro formally opens to service, as the first metro line in Taiwan.

    Asia · Taipei MetroTranslated from the list on Wikipedia in ChineseWikipedia: 台北捷运

Who was born on 28 March

In order of how many Wikipedia editions have an article about each. The first 60 of 178 are shown.

  1. 1986

    Lady Gaga, American singer-songwriter and actress

    Lenox Hill HospitalWikipedia: Lady Gaga
  2. 1868

    Maxim Gorky, Russian novelist, short story writer, and playwright (died 1936)

    Nizhny NovgorodWikipedia: Maxim Gorky
  3. 1936

    Mario Vargas Llosa, Peruvian writer and politician, Nobel Prize laureate (died 2025)

    ArequipaWikipedia: Mario Vargas Llosa
  4. 1945

    Rodrigo Duterte, Filipino politician, 16th President of the Philippines

    MaasinWikipedia: Rodrigo Duterte
  5. 1515

    Teresa of Ávila, Spanish nun and saint (died 1582)

    ÁvilaWikipedia: Teresa of Ávila
  6. 1592

    John Amos Comenius, Czech bishop and educator (died 1670)

    Uherský BrodWikipedia: John Amos Comenius
  7. 1928

    Zbigniew Brzezinski, Polish-American political activist and analyst; United States National Security Advisor (died 2017)

    WarsawWikipedia: Zbigniew Brzezinski
  8. 1862

    Aristide Briand, French politician, Prime Minister of France, Nobel Prize laureate (died 1932)

    NantesWikipedia: Aristide Briand
  9. 1959

    Laura Chinchilla, Costa Rican politician, 46th President of Costa Rica

    San JoséWikipedia: Laura Chinchilla
  10. 1930

    Jerome Isaac Friedman, American physicist and academic, Nobel Prize laureate

    ChicagoWikipedia: Jerome Isaac Friedman
  11. 1942

    Daniel Dennett, American philosopher and academic (died 2024)

    Wikipedia: Daniel Dennett
  12. 1985

    Stanislas Wawrinka, Swiss tennis player

    LausanneWikipedia: Stan Wawrinka
  13. 1955

    Reba McEntire, American singer-songwriter and actress

    McAlesterWikipedia: Reba McEntire
  14. 1970

    Vince Vaughn, American actor

    MinneapolisWikipedia: Vince Vaughn
  15. 1925

    Innokenty Smoktunovsky, Russian actor (died 1994)

    TatyanovkaWikipedia: Innokenty Smoktunovsky
  16. 1928

    Alexander Grothendieck, German-French mathematician and theorist (died 2014)

    BerlinWikipedia: Alexander Grothendieck
  17. 1981

    Julia Stiles, American actress

    New York CityWikipedia: Julia Stiles
  18. 1948

    Dianne Wiest, American actress

    Kansas CityWikipedia: Dianne Wiest
  19. 1985

    Steve Mandanda, French footballer

    KinshasaWikipedia: Steve Mandanda
  20. 1914

    Bohumil Hrabal, Czech author (died 1997)

    Brno-ŽideniceWikipedia: Bohumil Hrabal
  21. 1892

    Corneille Heymans, Belgian physiologist and academic, Nobel Prize laureate (died 1968)

    GhentWikipedia: Corneille Heymans
  22. 1960

    José Maria Neves, Cape Verdeian politician, 4th Prime Minister of Cape Verde

    Santa CatarinaWikipedia: José Maria Neves
  23. 1750

    Francisco de Miranda, Venezuelan general and politician (died 1816)

    CaracasWikipedia: Francisco de Miranda
  24. 1946

    Alejandro Toledo, Peruvian economist and politician, President of Peru

    CabanaWikipedia: Alejandro Toledo
  25. 1910

    Ingrid of Sweden, Queen of Denmark (died 2000)

    Stockholm PalaceWikipedia: Ingrid of Sweden
  26. 1472

    Fra Bartolomeo, Italian painter (died 1517)

    PratoWikipedia: Fra Bartolomeo
  27. 1921

    Dirk Bogarde, English actor and author (died 1999)

    West HampsteadWikipedia: Dirk Bogarde
  28. 1973

    Björn Kuipers, Dutch footballer and referee

    OldenzaalWikipedia: Björn Kuipers
  29. 1994

    Jackson Wang, Hong Kong rapper

    Hong KongWikipedia: Jackson Wang
  30. 1912

    Marina Raskova, Russian pilot and navigator (died 1943)

    MoscowWikipedia: Marina Raskova
  31. 1953

    Melchior Ndadaye, Burundian banker and politician, 4th President of Burundi (died 1993)

    BurundiWikipedia: Melchior Ndadaye
  32. 1969

    Brett Ratner, American director and producer

    Miami BeachWikipedia: Brett Ratner
  33. 1975

    Iván Helguera, Spanish footballer

    SantanderWikipedia: Iván Helguera
  34. 1914

    Edmund Muskie, American politician, 64th Governor of Maine, 58th United States Secretary of State (died 1996)

    RumfordWikipedia: Edmund Muskie
  35. 1942

    Mike Newell, English director and producer

    St AlbansWikipedia: Mike Newell
  36. 1986

    Barbora Strýcová, Czech tennis player

    PlzeňWikipedia: Barbora Strýcová
  37. 1727

    Maximilian III Joseph, Elector of Bavaria, (died 1777)

    MunichWikipedia: Maximilian III Joseph
  38. 1897

    Sepp Herberger, German footballer and manager (died 1977)

    MannheimWikipedia: Sepp Herberger
  39. 1944

    Rick Barry, American basketball player

    ElizabethWikipedia: Rick Barry
  40. 1943

    Conchata Ferrell, American actress (died 2020)

    CharlestonWikipedia: Conchata Ferrell
  41. 1946

    Henry Paulson, American banker and politician, 74th United States Secretary of the Treasury

    Palm BeachWikipedia: Henry Paulson
  42. 1990

    Laura Harrier, American actress and model

    ChicagoWikipedia: Laura Harrier
  43. 1902

    Flora Robson, English actress (died 1984)

    South ShieldsWikipedia: Flora Robson
  44. 1909

    Nelson Algren, American novelist and short story writer (died 1981)

    DetroitWikipedia: Nelson Algren
  45. 1851

    Bernardino Machado, Portuguese academic and politician, 3rd President of Portugal (died 1944)

    Rio de JaneiroWikipedia: Bernardino Machado
  46. 1942

    Neil Kinnock, Welsh politician, Vice-President of the European Commission

    TredegarWikipedia: Neil Kinnock
  47. 1895

    Christian Herter, American politician, United States Secretary of State (died 1966)

    ParisWikipedia: Christian Herter
  48. 1935

    Józef Szmidt, Polish triple jumper (died 2024)

    MiechowiceWikipedia: Józef Szmidt
  49. 1968

    Iris Chang, Chinese-American journalist and author (died 2004)

    PrincetonWikipedia: Iris Chang
  50. 1973

    Umaga, American Samoan wrestler (died 2009)

    San FranciscoWikipedia: Umaga
  51. 1924

    Freddie Bartholomew, American actor (died 1992)

    LondonWikipedia: Freddie Bartholomew
  52. 1940

    Luis Cubilla, Uruguayan footballer and coach (died 2013)

    Wikipedia: Luis Cubilla
  53. 1840

    Emin Pasha, German-Jewish Egyptian physician and politician (died 1892)

    OpoleWikipedia: Emin Pasha
  54. 1894

    Ernst Lindemann, German captain (died 1941)

    AltenkirchenWikipedia: Ernst Lindemann
  55. 1984

    Christopher Samba, Congolese footballer

    CréteilWikipedia: Christopher Samba
  56. 1992

    Sergi Gómez, Spanish footballer

    Arenys de MarWikipedia: Sergi Gómez
  57. 1903

    Rudolf Serkin, Czech-American pianist and educator (died 1991)

    ChebWikipedia: Rudolf Serkin
  58. 1946

    Wubbo Ockels, Dutch physicist and astronaut (died 2014)

    AlmeloWikipedia: Wubbo Ockels
  59. 1987

    Yohan Benalouane, French-Tunisian footballer

    Bagnols-sur-CèzeWikipedia: Yohan Benalouane
  60. 1890

    Paul Whiteman, American violinist, composer, and bandleader (died 1967)

    DenverWikipedia: Paul Whiteman

What is celebrated on 28 March

  • Christian feast day: Christopher Wharton
  • Christian feast day: Jeanne-Marie de Maille
  • Christian feast day: Józef Sebastian Pelczar
  • Christian feast day: Priscus
  • Christian feast day: Pope Sixtus III
  • Christian feast day: Stephen Harding
  • Christian feast day: March 28 (Eastern Orthodox liturgics)
  • Serfs Emancipation Day (Tibet)
  • Teachers' Day (Czech Republic and Slovakia)

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.

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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