A birthday on the globe
24 September on the globe: what happened in the world on this day, and who was born
For 24 September, the English Wikipedia lists 50 events and 238 births. 22 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:
Turn it into a greetingScroll: the globe turns to each place
The day you were born, on the globe.
Three things from your day
Scroll: your day first, then 24 September through the years
The Earth on 24 September
The picture on the globe was assembled by NASA from satellite photographs taken in September 2004: the snow, the ice and the green are those of the month.
On 24 September the Sun passes straight overhead at noon along the parallel of 0.4° south. In London, the day lasts about 12 hours 5 minutes.
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.
Britain & Ireland · London
1954
AEC Routemaster, the iconic London bus was introduced.
On the map: London.
Europe · Oulu
1875
The 1864 play Heath Cobblers by Aleksis Kivi premieres in Oulu, Finland.
On the map: Oulu.
Asia · Nicaea
787
The Second Council of Nicaea begins at the Church of Holy Wisdom in the city of Nicaea in Bithynia.
On the map: Nicaea.
North America · Devils Tower
1906
U.S. President Theodore Roosevelt proclaims Devils Tower in Wyoming as the nation's first National Monument.
On the map: Devils Tower.
Also on the day’s list of Wikipedia in Romanian.
North America · New York City
1996
Representatives of 71 nations sign the Comprehensive Nuclear-Test-Ban Treaty at the United Nations.
On the map: New York City.
Also on the day’s list of Wikipedia in Chinese.
North America · Pittsburgh
2009
The G20 summit begins in Pittsburgh with 30 global leaders in attendance.
On the map: Pittsburgh.
24 September
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 Spanish and were translated for this page.
From Wikipedia in Spanish · Seoul Olympic Main Stadium
1988
At the Seoul Olympic Games, the Canadian Ben Johnson wins the 100 metres, setting a world record (9.79 s).
On the map: Seoul Olympic Main Stadium.
Translated from the list on Wikipedia in Spanish.
The article on Wikipedia in Spanish: Juegos Olímpicos de Seúl 1988
24 September
Born on 24 September#
The English Wikipedia lists 238 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.
Born on 24 September
1896
F. Scott Fitzgerald, American novelist and short story writer (died 1940)
Place of birth: Saint Paul.
Born on 24 September
1501
Gerolamo Cardano, Italian mathematician, physician, and astrologer (died 1576)
Place of birth: Pavia.
Born on 24 September
1905
Severo Ochoa, Spanish–American physician and biochemist, Nobel Prize laureate (died 1993)
Place of birth: Ḷḷuarca.
Born on 24 September
1936
Jim Henson, American puppeteer, director, producer, and screenwriter, created The Muppets (died 1990)
Place of birth: Greenville.
Born on 24 September
1980
John Arne Riise, Norwegian footballer
Place of birth: Molde Municipality.
Born in Britain and Ireland
1962
Ally McCoist, Scottish footballer and manager
Place of birth: Bellshill.
Born in Britain and Ireland
1564
William Adams, English sailor and navigator (died 1620)
Place of birth: Gillingham.
Born in Britain and Ireland
1997
Tosin Adarabioyo, English footballer
Place of birth: Paddington.
24 September
Number one in the charts that week
At the cinema
An animal recorded that day
The record can be seen in GBIF, which brings together wildlife records from around the world.
All your birthdays
The weather that day
Data: Met Office Hadley Centre (HadCET); NOAA (GHCN-Daily, Mauna Loa).
Above the Earth
Sources: Jonathan McDowell, GCAT (launches); GFZ Potsdam (Kp index). Days are counted in Universal Time.
Football that day
International matches played that day:
Source: the “International football results” dataset kept by Mart Jürisoo (CC0).
Also that day
The earthquake’s page at the USGS
Source: the USGS catalogue. The day is counted in Universal Time (UTC).
In those days
Make a link for someone
Type the name, pick the day and the year of birth. The link opens straight on their day, with their name in the greeting.
The link carries the name, date and place typed here; anyone who gets it can see them.
Put another birthday beside it
Your mother’s, your child’s, a friend’s: the two days appear side by side.
Below: 24 September through the years.
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 24 September
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.
- 787
The Second Council of Nicaea begins at the Church of Holy Wisdom in the city of Nicaea in Bithynia.
Asia · NicaeaWikipedia: Second Council of Nicaea - 867
Byzantine emperor Michael III is murdered in his chamber by his junior emperor Basil I.
no place on the mapWikipedia: Michael III - 1568
Spanish naval forces defeat an English fleet, under the command of John Hawkins, at the Battle of San Juan de Ulúa near Veracruz.
Latin America · Battle of San Juan de UlúaWikipedia: Battle of San Juan de Ulúa - 1645
The Battle of Rowton Heath in England occurs, ending in a Parliamentarian victory over a Royalist army commanded in person by King Charles I.
Britain & Ireland · Battle of Rowton HeathWikipedia: Battle of Rowton Heath - 1674
Second Tantrik Coronation of Shivaji.
no place on the mapWikipedia: Shivaji - 1789
The United States Congress passes the Judiciary Act, creating the office of the Attorney General and federal judiciary system and ordering the composition of the Supreme Court.
no place on the mapWikipedia: Judiciary Act of 1789 - 1830
A revolutionary committee of notables forms the Provisional Government of Belgium.
no place on the mapWikipedia: Provisional Government of Belgium - 1841
The Sultanate of Brunei cedes Sarawak to James Brooke.
Asia · Raj of SarawakWikipedia: Sultanate of Brunei - 1846
Mexican–American War: General Zachary Taylor captures Monterrey.
Latin America · Battle of MonterreyWikipedia: Mexican–American War - 1852
The first powered, passenger-carrying airship, the Giffard dirigible, travels 17 miles (27 km) from Paris to Trappes.
no place on the mapWikipedia: Giffard dirigible - 1853
Admiral Despointes formally takes possession of New Caledonia in the name of France.
Oceania · New CaledoniaWikipedia: Auguste Febvrier Despointes - 1869
Black Friday (1869): Gold prices plummet after United States President Ulysses S. Grant orders the Treasury to sell large quantities of gold after Jay Gould and James Fisk plot to control the market.
North America · New York Gold ExchangeWikipedia: Black Friday - 1875
The 1864 play Heath Cobblers by Aleksis Kivi premieres in Oulu, Finland.
Europe · OuluWikipedia: Heath Cobblers - 1877
The Battle of Shiroyama is a decisive victory of the Imperial Japanese Army over the Satsuma Rebellion.
Asia · Battle of ShiroyamaWikipedia: Battle of Shiroyama - 1890
The Church of Jesus Christ of Latter-day Saints officially renounces polygamy.
no place on the mapWikipedia: 1890 Manifesto - 1903
Alfred Deakin became the second Australian prime minister, succeeding Edmund Barton, who left office to become a founding justice of the High Court of Australia.
no place on the mapWikipedia: Alfred Deakin - 1906
Racial tensions exacerbated by rumors lead to the Atlanta Race Riot, further increasing racial segregation.
North America · 1906 Atlanta race massacreWikipedia: 1906 Atlanta race massacre - 1906
U.S. President Theodore Roosevelt proclaims Devils Tower in Wyoming as the nation's first National Monument.
North America · Devils TowerWikipedia: Devils Tower - 1911
His Majesty's Airship No. 1, Britain's first rigid airship, is wrecked by strong winds before her maiden flight at Barrow-in-Furness.
no place on the mapWikipedia: HMA No. 1 - 1929
Jimmy Doolittle performs the first flight without a window, proving that full instrument flying from take off to landing is possible.
no place on the mapWikipedia: Jimmy Doolittle - 1932
Mahatma Gandhi and B. R. Ambedkar agree to the Poona Pact, which reserved seats in the Indian provincial legislatures for the "Depressed Classes" (Untouchables).
no place on the mapWikipedia: Mahatma Gandhi - 1935
Earl and Weldon Bascom produce the first rodeo ever held outdoors under electric lights.
no place on the mapWikipedia: Earl W. Bascom - 1941
Operation Barbarossa: A Wehrmacht training event known as the Mogilev Conference began, marking an increase in violence against Jews and other civilians in the areas under General Max von Schenckendorff's command.
Europe · Mogilev ConferenceWikipedia: Mogilev Conference - 1945
Dozens of Jews were injured in the Topoľčany pogrom, one of the worst episodes of anti-Jewish violence in postwar Czechoslovakia.
Europe · TopoľčanyWikipedia: Topoľčany pogrom - 1946
Cathay Pacific Airways is founded in Hong Kong.
no place on the mapWikipedia: Cathay Pacific - 1946
The top-secret Clifford-Elsey Report on the Soviet Union is delivered to President Truman.
no place on the mapWikipedia: X Article - 1948
The Honda Motor Company is founded.
no place on the mapWikipedia: Honda - 1950
The eastern United States is covered by a thick haze from the Chinchaga fire in western Canada.
North America · Chinchaga fireWikipedia: Chinchaga fire - 1954
AEC Routemaster, the iconic London bus was introduced.
Britain & Ireland · LondonWikipedia: AEC Routemaster - 1954
The Cochabamba–Santa Cruz highway connecting western and eastern Bolivia is inaugurated.
Latin America · BoliviaWikipedia: Route 7 - 1957
President Eisenhower sends the 101st Airborne Division to Little Rock, Arkansas, to enforce desegregation.
North America · Little Rock NineWikipedia: 101st Airborne Division - 1959
TAI Flight 307 crashes during takeoff from Bordeaux–Mérignac Airport in Bordeaux, Nouvelle-Aquitaine, France, killing 55 people.
Europe · TAI Flight 307Wikipedia: TAI Flight 307 - 1960
USS Enterprise, the world's first nuclear-powered aircraft carrier, is launched.
no place on the mapWikipedia: USS Enterprise - 1964
The Warren Commission released its report to the U.S. president, concluding that Lee Harvey Oswald acted alone in the assassination of John F. Kennedy.
North America · Assassination of John F. KennedyWikipedia: Assassination of John F. Kennedy - 1972
Japan Airlines Flight 472 lands at Juhu Aerodrome instead of Santacruz Airport in Bombay, India, overrunning the runway and resulting in 11 injuries.
Asia · Japan Air Lines Flight 472Wikipedia: Japan Air Lines Flight 472 - 1973
Guinea-Bissau declares its independence from Portugal.
Africa · Guinea-BissauWikipedia: Guinea-Bissau - 1975
Southwest Face expedition members become the first persons to reach the summit of Mount Everest by any of its faces, instead of using a ridge route.
no place on the mapWikipedia: 1975 British Mount Everest Southwest Face expedition - 1992
After his neighbor identified handwriting samples placed on local billboards by police, Oba Chandler was arrested three years after he committed a triple murder in the Tampa Bay area in Florida.
North America · Tampa Bay areaWikipedia: Oba Chandler - 1993
The Cambodian monarchy is restored, with Norodom Sihanouk as king.
no place on the mapWikipedia: Monarchy of Cambodia - 1996
Representatives of 71 nations sign the Comprehensive Nuclear-Test-Ban Treaty at the United Nations.
North America · New York CityWikipedia: Comprehensive Nuclear-Test-Ban Treaty - 2005
Hurricane Rita makes landfall in the United States, devastating portions of southwestern Louisiana and extreme southeastern Texas.
North America · TexasWikipedia: Hurricane Rita - 2007
Between 30,000 and 100,000 people take part in anti-government protests in Yangon, Burma, the largest in 20 years.
no place on the mapWikipedia: Saffron Revolution - 2008
Thabo Mbeki resigns as president of South Africa.
no place on the mapWikipedia: Thabo Mbeki - 2009
South African Airlink Flight 8911 crashes near Durban International Airport in Durban, South Africa, killing the captain and injuring the rest of the crew.
Africa · South African Airlink Flight 8911Wikipedia: South African Airlink Flight 8911 - 2009
The G20 summit begins in Pittsburgh with 30 global leaders in attendance.
North America · PittsburghWikipedia: 2009 G20 Pittsburgh summit - 2013
A 7.7-magnitude earthquake strikes southern Pakistan, killing at least 327 people.
Asia · 2013 Balochistan earthquakesWikipedia: 2013 Balochistan earthquakes - 2014
The Mars Orbiter Mission makes India the first Asian nation to reach Mars orbit, and the first nation in the world to do so in its first attempt.
no place on the mapWikipedia: Mars Orbiter Mission - 2015
At least 1,100 people are killed and another 934 wounded after a stampede during the Hajj in Saudi Arabia.
Asia · 2015 Mina crowd crushWikipedia: 2015 Mina crowd crush - 2019
The Supreme Court of the United Kingdom unanimously ruled that advice given by Prime Minister Boris Johnson to Queen Elizabeth II that Parliament should be prorogued was unlawful.
no place on the mapWikipedia: Supreme Court of the United Kingdom - 2023
NASA's OSIRIS-REx capsule containing samples from the asteroid 101955 Bennu successfully lands back on Earth.
no place on the mapWikipedia: NASA
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 Spanish and were translated for this page.
- 1988
At the Seoul Olympic Games, the Canadian Ben Johnson wins the 100 metres, setting a world record (9.79 s).
Asia · Seoul Olympic Main StadiumTranslated from the list on Wikipedia in SpanishWikipedia: Juegos Olímpicos de Seúl 1988
Who was born on 24 September
In order of how many Wikipedia editions have an article about each. The first 60 of 238 are shown.
- 1896
F. Scott Fitzgerald, American novelist and short story writer (died 1940)
Saint PaulWikipedia: F. Scott Fitzgerald - 1911
Konstantin Chernenko, Soviet politician, General Secretary of the Communist Party and de facto leader of the USSR (died 1985)
Bolshaya TesWikipedia: Konstantin Chernenko - 1884
İsmet İnönü, Turkish general and politician, 2nd President of Turkey (died 1973)
İnönü House MuseumWikipedia: İsmet İnönü - 15
Vitellius, Roman emperor (died 69)
NuceriaWikipedia: Vitellius - 1501
Gerolamo Cardano, Italian mathematician, physician, and astrologer (died 1576)
- 1717
Horace Walpole, English historian, author, and politician (died 1797)
- 1898
Howard Florey, Australian pharmacologist and pathologist, Nobel Prize laureate (died 1968)
AdelaideWikipedia: Howard Florey - 1905
Severo Ochoa, Spanish–American physician and biochemist, Nobel Prize laureate (died 1993)
ḶḷuarcaWikipedia: Severo Ochoa - 1936
Jim Henson, American puppeteer, director, producer, and screenwriter, created The Muppets (died 1990)
GreenvilleWikipedia: Jim Henson - 1980
John Arne Riise, Norwegian footballer
Molde MunicipalityWikipedia: John Arne Riise - 1930
John W. Young, American captain, engineer, and astronaut (died 2018)
San FranciscoWikipedia: John Young - 1895
André Frédéric Cournand, French physician and physiologist, Nobel Prize laureate (died 1988)
1st arrondissement of ParisWikipedia: André Frédéric Cournand - 1583
Albrecht von Wallenstein, Bohemian general (died 1634)
HeřmaniceWikipedia: Albrecht von Wallenstein - 1755
John Marshall, American Continental Army officer, jurist, and politician, 4th Chief Justice of the United States Supreme Court (died 1835)
GermantownWikipedia: John Marshall - 1878
Charles-Ferdinand Ramuz, Swiss author and poet (died 1947)
- 1801
Mikhail Ostrogradsky, Ukrainian-Russian mathematician and physicist (died 1862)
PashenivkaWikipedia: Mikhail Ostrogradsky - 1941
Linda McCartney, American singer, photographer, and activist (died 1998)
ManhattanWikipedia: Linda McCartney - 1954
Marco Tardelli, Italian footballer and coach
CareggineWikipedia: Marco Tardelli - 1991
Oriol Romeu, Spanish footballer
UlldeconaWikipedia: Oriol Romeu - 1976
Stephanie McMahon, American wrestler and businesswoman
HartfordWikipedia: Stephanie McMahon - 1954
Ashton B. Carter, American military civilian official (Secretary of Defense, 2015-17), and academic administrator
PhiladelphiaWikipedia: Ash Carter - 1625
Johan de Witt, Dutch mathematician and politician (died 1672)
DordrechtWikipedia: Johan de Witt - 1958
Kevin Sorbo, American actor and producer
- 1948
Phil Hartman, Canadian-American actor and screenwriter (died 1998)
BrantfordWikipedia: Phil Hartman - 1962
Ally McCoist, Scottish footballer and manager
BellshillWikipedia: Ally McCoist - 1979
Fábio Aurélio, Brazilian footballer
São CarlosWikipedia: Fábio Aurélio - 1534
Guru Ram Das, fourth Sikh Guru (died 1581)
LahoreWikipedia: Guru Ram Das - 1962
Nia Vardalos, Canadian-American actress and screenwriter
WinnipegWikipedia: Nia Vardalos - 1564
William Adams, English sailor and navigator (died 1620)
GillinghamWikipedia: William Adams - 1949
Anders Arborelius, Swedish cardinal
SorengoWikipedia: Anders Arborelius - 1989
Pia Wurtzbach, Filipina actress, model, and beauty queen, Miss Universe 2015
StuttgartWikipedia: Pia Wurtzbach - 1880
Sarah Knauss, American super-centenarian, oldest verified American person ever (died 1999)
HollywoodWikipedia: Sarah Knauss - 1997
Tosin Adarabioyo, English footballer
PaddingtonWikipedia: Tosin Adarabioyo - 1934
Manfred Wörner, German politician and diplomat, 7th Secretary General of NATO (died 1994)
Bad CannstattWikipedia: Manfred Wörner - 1969
Shawn Crahan, American drummer, songwriter, and producer
Des MoinesWikipedia: Shawn Crahan - 1985
Jonathan Soriano, Spanish footballer
El Pont de Vilomara i RocafortWikipedia: Jonathan Soriano - 1993
Ben Platt, American actor, singer, and songwriter
Los AngelesWikipedia: Ben Platt - 2003
Joe Locke, Manx actor
DouglasWikipedia: Joe Locke - 1920
Ovadia Yosef, Iraqi-Israeli rabbi and scholar (died 2013)
BaghdadWikipedia: Ovadia Yosef - 1934
John Brunner, English-Scottish author and screenwriter (died 1995)
WallingfordWikipedia: John Brunner - 1980
Petri Pasanen, Finnish footballer
- 1871
Lottie Dod, English tennis player, golfer, and archer (died 1960)
BebingtonWikipedia: Lottie Dod - 1872
Jaan Teemant, Estonian lawyer and politician, 7th State Elder of Estonia (died 1941)
Vigala Rural MunicipalityWikipedia: Jaan Teemant - 1993
Liu Shiying, Chinese athlete
YantaiWikipedia: Liu Shiying - 1705
Count Leopold Joseph von Daun, Austrian field marshal (died 1766)
- 1725
Arthur Guinness, Irish brewer and founder of the Guinness brewery (died 1803)
CelbridgeWikipedia: Arthur Guinness - 1976
Ian Bohen, American actor
Carmel-by-the-SeaWikipedia: Ian Bohen - 1473
Georg von Frundsberg, German Knight and landowner (died 1528)
MindelheimWikipedia: Georg von Frundsberg - 1796
Antoine-Louis Barye, French sculptor and educator (died 1875)
- 1817
Ramón de Campoamor y Campoosorio, Spanish poet and philosopher (died 1901)
- 1884
Gustave Garrigou, French cyclist (died 1963)
Vabre-TizacWikipedia: Gustave Garrigou - 1914
Andrzej Panufnik, Polish pianist, composer, and conductor (died 1991)
- 1946
Lars Emil Johansen, Greenlandic educator and politician, 2nd Prime Minister of Greenland
IllorsuitWikipedia: Lars-Emil Johansen - 1980
Victoria Pendleton, English cyclist
StotfoldWikipedia: Victoria Pendleton - 936
'Adud al-Dawla, Buyid king (died 983)
IsfahanWikipedia: 'Adud al-Dawla - 1923
Raoul Bott, Hungarian-American mathematician (died 2005)
BudapestWikipedia: Raoul Bott - 1950
Harriet Walter, English actress
- 1870
Georges Claude, French chemist and engineer, invented Neon lighting (died 1960)
11th arrondissement of ParisWikipedia: Georges Claude - 1893
Blind Lemon Jefferson, American singer-songwriter and guitarist (died 1929)
- 1882
Max Decugis, French tennis player (died 1978)
What is celebrated on 24 September
- Armed Forces Day (Peru)
- Christian feast day: Anathalon (in Brescia)
- Christian feast day: Antonio Gonzalez
- Christian feast day: Blessed Anton Martin Slomšek
- Christian feast day: Bystrík
- Christian feast day: Blessed Colomba Gabriel
- Christian feast day: Blessed Émilie Gamelin (Canada)
- Christian feast day: Gerard of Csanád
- Christian feast day: Our Lady of Mercy and its related observance: La Mercè (Barcelona)
- Christian feast day: Our Lady of Ransom (Mercedarians)
- Christian feast day: Our Lady of Walsingham (Church of England)
- Christian feast day: Pacificus of San Severino
- Christian feast day: Rupert of Salzburg
- Christian feast day: Blessed William Spenser
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.
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
- Events, births and holidays: the day’s page on Wikipedia, text under CC BY-SA 4.0.
- Coordinates, places of birth and the number of editions: Wikidata (CC0).
- The Earth by day: NASA Blue Marble Next Generation. The Earth by night: NASA Black Marble 2016.
- Borders and regions: Natural Earth.
- World population and births per year: UN World Population Prospects 2024.
- Charts and films: Wikipedia’s lists for Billboard, the UK Singles Chart, Los 40 Principales, Romanian Top 100, Airplay 100 and American films by year (CC BY-SA 4.0).
- Weather: Met Office Hadley Centre, HadCET (Open Government Licence) and NOAA GHCN-Daily, New York Central Park. Carbon dioxide: NOAA Global Monitoring Laboratory, Mauna Loa.
- Earthquakes: the USGS catalogue. Launches: Jonathan McDowell, GCAT (CC BY). Kp index: GFZ Potsdam (CC BY 4.0). Matches: International football results, Mart Jürisoo (CC0).
- Animal observations: GBIF, with a link to each record; species names come from Wikidata.