A day on the globeROENES中文
The Earth on 16 February, with the rays of the day’s events
  1. A birthday on the globe

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

    For 16 February, the English Wikipedia lists 51 events and 195 births. 24 of the events stand at their places as rays of light; five 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 16 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 16 February the Sun passes straight overhead at noon along the parallel of 12.5° south. In London, the day lasts about 10 hours.

    Beyond 78° south the Sun no longer sets; beyond 78° 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. 16 February

    Asia#

    Nine events from the day’s list are placed here, between 1249 and 2013.

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

  4. Asia · Byblos

    1922

    A landslide in Byblos revealed a sarcophagus in an underground tomb that was later discovered to be part of a large Bronze Age necropolis.

    On the map: Byblos.

    Wikipedia: Byblos

  5. 16 February

    Oceania#

    One event from the day’s list is placed here, in 1986.

  6. Oceania · Marlborough Sounds

    1986

    The Soviet liner MS Mikhail Lermontov runs aground in the Marlborough Sounds, New Zealand.

    On the map: Marlborough Sounds.

    Wikipedia: Marlborough Sounds

  7. 16 February

    North America#

    Six events from the day’s list are placed here, between 1862 and 2000.

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

  8. North America · DuSable Black History Museum

    1961

    The DuSable Museum, the first museum dedicated to the study and conservation of African American history, culture, and art, was chartered.

    On the map: DuSable Black History Museum.

    Wikipedia: DuSable Black History Museum

  9. North America · Haleyville, Alabama

    1968

    In Haleyville, Alabama, the first 9-1-1 emergency telephone system goes into service.

    On the map: Haleyville, Alabama.

    Wikipedia: Haleyville, Alabama

  10. North America · Chicago

    1978

    The first computer bulletin board system is created (CBBS in Chicago).

    On the map: Chicago.

    Wikipedia: Bulletin board system

  11. 16 February

    Born on 16 February#

    The English Wikipedia lists 195 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.

  12. Born on 16 February

    1848

    Octave Mirbeau, French journalist, novelist, and playwright (died 1917)

    Place of birth: Trévières.

    Wikipedia: Octave Mirbeau

  13. Born on 16 February

    1834

    Ernst Haeckel, German biologist, physician, and philosopher (died 1919)

    Place of birth: Potsdam.

    Wikipedia: Ernst Haeckel

  14. Born on 16 February

    1497

    Philip Melanchthon, German astronomer, theologian, and academic (died 1560)

    Place of birth: Bretten.

    Wikipedia: Philipp Melanchthon

  15. Born on 16 February

    1989

    Elizabeth Olsen, American actress

    Place of birth: Sherman Oaks.

    Wikipedia: Elizabeth Olsen

  16. Born on 16 February

    1959

    John McEnroe, American tennis player and sportscaster

    Place of birth: Wiesbaden.

    Wikipedia: John McEnroe

  17. Born in Britain and Ireland

    1822

    Francis Galton, English biologist and statistician (died 1911)

    Place of birth: Sparkbrook.

    Wikipedia: Francis Galton

  18. Born in Britain and Ireland

    1954

    Iain Banks, Scottish author and playwright (died 2013)

    Place of birth: Dunfermline.

    Wikipedia: Iain Banks

  19. Born in Britain and Ireland

    1926

    John Schlesinger, English actor and director (died 2003)

    Place of birth: London.

    Wikipedia: John Schlesinger

  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 16 February

The list is the English Wikipedia’s, in its own wording, as it stood in October 2026. 22 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. 1249

    Andrew of Longjumeau is dispatched by Louis IX of France as his ambassador to meet with the Khagan of the Mongol Empire.

    Asia · Mongol EmpireWikipedia: André de Longjumeau
  2. 1270

    The Grand Duchy of Lithuania defeats the Livonian Order in the Battle of Karuse.

    Europe · Battle of KaruseWikipedia: Battle of Karuse
  3. 1630

    Dutch forces led by Hendrick Lonck capture Olinda in what was to become part of Dutch Brazil.

    Latin America · OlindaWikipedia: Dutch invasions of Brazil
  4. 1646

    Battle of Torrington, Devon: The last major battle of the First English Civil War.

    Britain & Ireland · Battle of TorringtonWikipedia: Battle of Torrington
  5. 1699

    First Leopoldine Diploma is issued by the Holy Roman Emperor, recognizing the Greek Catholic clergy enjoyed the same privileges as Roman Catholic priests in the Principality of Transylvania.

    Europe · Principality of TransylvaniaWikipedia: Leopold I, Holy Roman Emperor
  6. 1742

    Spencer Compton, Earl of Wilmington, becomes British Prime Minister.

  7. 1796

    Colombo in Ceylon (now Sri Lanka) falls to the British, completing their invasion of Ceylon.

    Asia · ColomboWikipedia: Invasion of Ceylon
  8. 1804

    First Barbary War: Stephen Decatur leads a raid to burn the pirate-held frigate USS Philadelphia.

    no place on the mapWikipedia: First Barbary War
  9. 1859

    The French government passed a law setting the musical note A4 to a frequency of 435 hertz, in the first attempt to standardize concert pitch.

    no place on the mapWikipedia: Musical note
  10. 1862

    American Civil War: General Ulysses S. Grant captures Fort Donelson, Tennessee.

    North America · Battle of Fort DonelsonWikipedia: American Civil War
  11. 1866

    Spencer Compton Cavendish, Marquess of Hartington becomes British Secretary of State for War.

  12. 1881

    The Canadian Pacific Railway is incorporated by Act of Parliament at Ottawa (44th Vic., c.1).

  13. 1899

    Iceland's first football club, Knattspyrnufélag Reykjavíkur, is founded.

    Europe · IcelandWikipedia: Iceland
  14. 1900

    The Southern Cross expedition led by Carsten Borchgrevink achieves a new Farthest South of 78° 50'S, making the first landing at the Great Ice Barrier.

  15. 1918

    The Council of Lithuania unanimously adopts the Act of Independence, declaring Lithuania an independent state.

    Europe · LithuaniaWikipedia: Act of Independence of Lithuania
  16. 1922

    A landslide in Byblos revealed a sarcophagus in an underground tomb that was later discovered to be part of a large Bronze Age necropolis.

    Asia · ByblosWikipedia: Byblos
  17. 1923

    Howard Carter unseals the burial chamber of Pharaoh Tutankhamun.

    no place on the mapWikipedia: Howard Carter
  18. 1930

    The Romanian Football Federation joins FIFA.

  19. 1934

    The Austrian Civil War ends with the defeat of the Social Democrats and the Republikanischer Schutzbund.

  20. 1934

    The Commission of Government is officially sworn in; ending 79 years of responsible government in Newfoundland.

  21. 1936

    The Popular Front wins the 1936 Spanish general election.

  22. 1937

    Wallace H. Carothers receives a United States patent for nylon.

    no place on the mapWikipedia: Wallace Carothers
  23. 1940

    World War II: Altmark incident: The German tanker Altmark is boarded by sailors from the British destroyer HMS Cossack. A total of 299 British prisoners are freed.

    Europe · Altmark incidentWikipedia: Altmark incident
  24. 1942

    World War II: Attack on Aruba, first World War II German shots fired on a land based object in the Americas.

    no place on the mapWikipedia: Attack on Aruba
  25. 1942

    World War II: In Athens, the Greek People's Liberation Army is established

    Europe · AthensWikipedia: Athens
  26. 1943

    World War II: In the early phases of the Third Battle of Kharkov, Red Army troops re-enter the city.

    Europe · Third Battle of KharkovWikipedia: Third Battle of Kharkov
  27. 1945

    The Alaska Equal Rights Act of 1945, the first anti-discrimination law in the United States, was signed into law.

  28. 1945

    World War II: American forces land on Corregidor Island in the Philippines.

    Asia · Battle of CorregidorWikipedia: Battle of Corregidor
  29. 1959

    Fidel Castro becomes Premier of Cuba after dictator Fulgencio Batista was overthrown on January 1.

    Latin America · CubaWikipedia: Fidel Castro
  30. 1960

    The U.S. Navy submarine USS Triton begins Operation Sandblast, setting sail from New London, Connecticut, to begin the first submerged circumnavigation of the globe.

    North America · New London, ConnecticutWikipedia: USS Triton
  31. 1961

    Explorer program: Explorer 9 (S-56a) is launched.

    no place on the mapWikipedia: Explorers Program
  32. 1961

    The DuSable Museum, the first museum dedicated to the study and conservation of African American history, culture, and art, was chartered.

    North America · DuSable Black History MuseumWikipedia: DuSable Black History Museum
  33. 1962

    Flooding in the coastal areas of West Germany kills 315 and destroys the homes of about 60,000 people.

  34. 1962

    The Great Sheffield Gale impacts the United Kingdom, killing nine people; the city of Sheffield is devastated, with 150,000 homes damaged.

    Britain & Ireland · SheffieldWikipedia: Great Sheffield Gale
  35. 1968

    Civil Air Transport Flight 010 crashes near Shongshan Airport in Taiwan, killing 21 of the 63 people on board and one more on the ground.

    Asia · Songshan AirportWikipedia: Civil Air Transport Flight 10
  36. 1968

    In Haleyville, Alabama, the first 9-1-1 emergency telephone system goes into service.

    North America · Haleyville, AlabamaWikipedia: Haleyville, Alabama
  37. 1978

    The first computer bulletin board system is created (CBBS in Chicago).

    North America · ChicagoWikipedia: Bulletin board system
  38. 1983

    The Ash Wednesday bushfires in Victoria and South Australia kill 75.

  39. 1984

    Iran launches Operation Dawn 5, a major offensive during the Iran–Iraq War targeting the Basra–Baghdad highway, resulting in heavy casualties on both sides.

    Asia · BasraWikipedia: Operation Dawn 5
  40. 1985

    Hezbollah is founded.

    no place on the mapWikipedia: Hezbollah
  41. 1986

    China Airlines Flight 2265 crashes into the Pacific Ocean near Penghu Airport in Taiwan, killing all 13 aboard.

    Asia · Penghu AirportWikipedia: China Airlines Flight 2265
  42. 1986

    The Soviet liner MS Mikhail Lermontov runs aground in the Marlborough Sounds, New Zealand.

    Oceania · Marlborough SoundsWikipedia: Marlborough Sounds
  43. 1991

    Nicaraguan Contras leader Enrique Bermúdez is assassinated in Managua.

    Latin America · ManaguaWikipedia: Nicaragua
  44. 1996

    A Chicago-bound Amtrak train, the Capitol Limited, collides with a MARC commuter train bound for Washington, D.C., killing 11 people.

  45. 1998

    China Airlines Flight 676 crashes into a road and residential area near Chiang Kai-shek International Airport in Taiwan, killing all 196 aboard and six more on the ground.

    Asia · China Airlines Flight 676Wikipedia: China Airlines Flight 676
  46. 2000

    Emery Worldwide Airlines Flight 17 crashes near Sacramento Mather Airport in Rancho Cordova, California, killing all three aboard.

    North America · Emery Worldwide Airlines Flight 17Wikipedia: Emery Worldwide Airlines Flight 17
  47. 2005

    The Kyoto Protocol comes into force, following its ratification by Russia.

    no place on the mapWikipedia: Kyoto Protocol
  48. 2005

    The National Hockey League cancels the entire 2004–05 regular season and playoffs.

  49. 2006

    The last Mobile army surgical hospital (MASH) is decommissioned by the United States Army.

  50. 2013

    A bomb blast at a market in Hazara Town, Quetta, Pakistan kills more than 80 people and injures 190 others.

    Asia · February 2013 Quetta bombingWikipedia: February 2013 Quetta bombing
  51. 2021

    Five thousand people gathered in the town of Kherrata, Bejaia Province to mark the second anniversary of the Hirak protest movement. Demonstrations had been suspended because of the COVID-19 pandemic in Algeria.

    Africa · KherrataWikipedia: Hirak

Who was born on 16 February

In order of how many Wikipedia editions have an article about each. The first 60 of 195 are shown.

  1. 1848

    Octave Mirbeau, French journalist, novelist, and playwright (died 1917)

    TrévièresWikipedia: Octave Mirbeau
  2. 1941

    Kim Jong Il, North Korean commander and politician, 2nd Supreme Leader of North Korea (died 2011)

    VyatskoyeWikipedia: Kim Jong Il
  3. 1834

    Ernst Haeckel, German biologist, physician, and philosopher (died 1919)

    PotsdamWikipedia: Ernst Haeckel
  4. 1497

    Philip Melanchthon, German astronomer, theologian, and academic (died 1560)

    BrettenWikipedia: Philipp Melanchthon
  5. 1989

    Elizabeth Olsen, American actress

    Sherman OaksWikipedia: Elizabeth Olsen
  6. 1959

    John McEnroe, American tennis player and sportscaster

    WiesbadenWikipedia: John McEnroe
  7. 1986

    Diego Godín, Uruguayan footballer

    RosarioWikipedia: Diego Godín
  8. 1822

    Francis Galton, English biologist and statistician (died 1911)

    SparkbrookWikipedia: Francis Galton
  9. 1990

    The Weeknd, Canadian singer-songwriter and producer

    ScarboroughWikipedia: The Weeknd
  10. 1873

    Radoje Domanović, Serbian journalist and author (died 1908)

    OvsišteWikipedia: Radoje Domanović
  11. 1979

    Valentino Rossi, Italian motorcycle racer

    UrbinoWikipedia: Valentino Rossi
  12. 1974

    Mahershala Ali, American actor

    OaklandWikipedia: Mahershala Ali
  13. 1964

    Bebeto, Brazilian footballer and manager

    SalvadorWikipedia: Bebeto
  14. 1838

    Henry Adams, American journalist, historian, and author (died 1918)

    Wikipedia: Henry Adams
  15. 1904

    George F. Kennan, American historian and diplomat, United States Ambassador to the Soviet Union (died 2005)

    MilwaukeeWikipedia: George F. Kennan
  16. 1994

    Ava Max, American singer and songwriter

    MilwaukeeWikipedia: Ava Max
  17. 1831

    Nikolai Leskov, Russian author, playwright, and journalist (died 1895)

    Wikipedia: Nikolai Leskov
  18. 1848

    Hugo de Vries, Dutch botanist, geneticist, and academic (died 1935)

    HaarlemWikipedia: Hugo de Vries
  19. 1812

    Henry Wilson, American colonel and politician, 18th Vice President of the United States (died 1875)

    FarmingtonWikipedia: Henry Wilson
  20. 1954

    Iain Banks, Scottish author and playwright (died 2013)

    DunfermlineWikipedia: Iain Banks
  21. 1988

    Kim Soo-hyun, South Korean actor and singer

    SeoulWikipedia: Kim Soo-hyun
  22. 1994

    Federico Bernardeschi, Italian footballer

    CarraraWikipedia: Federico Bernardeschi
  23. 1620

    Frederick William, Elector of Brandenburg (died 1688)

  24. 1973

    Cathy Freeman, Australian sprinter

    Slade PointWikipedia: Cathy Freeman
  25. 1951

    William Katt, American actor

    Los AngelesWikipedia: William Katt
  26. 1958

    Ice-T, American rapper and actor

    NewarkWikipedia: Ice-T
  27. 1906

    Vera Menchik, Russian-Czechoslovak-British chess player (died 1944)

    MoscowWikipedia: Vera Menchik
  28. 1991

    Sergio Canales, Spanish footballer

    SantanderWikipedia: Sergio Canales
  29. 1926

    John Schlesinger, English actor and director (died 2003)

    LondonWikipedia: John Schlesinger
  30. 1222

    Nichiren, founder of Nichiren Buddhism (died 1282)

    Tanjō-ji TempleWikipedia: Nichiren
  31. 1957

    LeVar Burton, American actor, director, and producer

    LandstuhlWikipedia: LeVar Burton
  32. 1964

    Christopher Eccleston, English actor

    LangworthyWikipedia: Christopher Eccleston
  33. 1970

    Angelo Peruzzi, Italian footballer and manager

    BleraWikipedia: Angelo Peruzzi
  34. 1514

    Georg Joachim Rheticus, Austrian cartographer and instrument maker (died 1574)

    FeldkirchWikipedia: Georg Joachim Rheticus
  35. 1519

    Gaspard II de Coligny, French admiral (died 1572)

    Châtillon-ColignyWikipedia: Gaspard II de Coligny
  36. 1982

    Rickie Lambert, English footballer

    KirkbyWikipedia: Rickie Lambert
  37. 1985

    Ron Vlaar, Dutch footballer

    HensbroekWikipedia: Ron Vlaar
  38. 1821

    Heinrich Barth, German explorer and scholar (died 1865)

    HamburgWikipedia: Heinrich Barth
  39. 1884

    Robert J. Flaherty, American director and producer (died 1951)

    Iron MountainWikipedia: Robert J. Flaherty
  40. 1935

    Sonny Bono, American actor, singer, and politician (died 1998)

    DetroitWikipedia: Sonny Bono
  41. 1988

    Denílson, Brazilian footballer

    São PauloWikipedia: Denílson
  42. 1727

    Nikolaus Joseph von Jacquin, Austrian botanist, chemist, and mycologist (died 1817)

  43. 1698

    Pierre Bouguer, French mathematician, geophysicist, and astronomer (died 1758)

    Le CroisicWikipedia: Pierre Bouguer
  44. 1932

    Ahmad Tejan Kabbah, Sierra Leonean economist, lawyer, and politician, 3rd President of Sierra Leone (died 2014)

    PendembuWikipedia: Ahmad Tejan Kabbah
  45. 1987

    Jon Ossoff, American politician and filmmaker

    AtlantaWikipedia: Jon Ossoff
  46. 1841

    Armand Guillaumin, French painter (died 1927)

    ParisWikipedia: Armand Guillaumin
  47. 1988

    Andrea Ranocchia, Italian footballer

    AssisiWikipedia: Andrea Ranocchia
  48. 1471

    Krishnadevaraya, emperor of the Vijayanagara Empire (died 1529)

    HampiWikipedia: Krishnadevaraya
  49. 1994

    Annika Beck, German tennis player

    GiessenWikipedia: Annika Beck
  50. 1331

    Coluccio Salutati, Italian political leader (died 1406)

    StignanoWikipedia: Coluccio Salutati
  51. 1786

    Maria Pavlovna, Russian Grand Duchess (died 1859)

  52. 1926

    Margot Frank, German-Dutch holocaust victim (died 1945)

    FrankfurtWikipedia: Margot Frank
  53. 1944

    Richard Ford, American novelist and short story writer

    JacksonWikipedia: Richard Ford
  54. 1954

    Margaux Hemingway, American model and actress (died 1996)

    PortlandWikipedia: Margaux Hemingway
  55. 1982

    Lupe Fiasco, American rapper

    ChicagoWikipedia: Lupe Fiasco
  56. 1978

    Tia Hellebaut, Belgian high jumper and chemist

    AntwerpWikipedia: Tia Hellebaut
  57. 1944

    António Mascarenhas Monteiro, Cape Verdean politician, 2nd President of Cape Verde (died 2016)

    Ribeira da BarcaWikipedia: António Mascarenhas Monteiro
  58. 1958

    Oscar Schmidt, Brazilian basketball player (died 2026)

    NatalWikipedia: Oscar Schmidt
  59. 1972

    Sarah Clarke, American actress

    St. LouisWikipedia: Sarah Clarke
  60. 1965

    Dave Lombardo, Cuban-American musician and songwriter

    HavanaWikipedia: Dave Lombardo

What is celebrated on 16 February

  • Christian feast day: Abda of Edessa
  • Christian feast day: Elias and companions
  • Christian feast day: Juliana of Nicomedia (Catholic Church)
  • Christian feast day: Onesimus
  • Christian feast day: Charles Todd Quintard (Episcopal Church (USA))
  • Christian feast day: February 16 (Eastern Orthodox liturgics)
  • Day of the Shining Star (Kim Jong Il's birthday) (North Korea)
  • Restoration of Lithuania's Statehood Day, celebrate the independence of Lithuania from Russia and Germany in 1918 (Lithuania)
  • Elizabeth Peratrovich Day (Alaska)

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