A birthday on the globe
8 January on the globe: what happened in the world on this day, and who was born
For 8 January, the English Wikipedia lists 63 events and 185 births. 28 of the events stand at their places as rays of light; nine 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 8 January through the years
The Earth on 8 January
The picture on the globe was assembled by NASA from satellite photographs taken in January 2004: the snow, the ice and the green are those of the month.
On 8 January the Sun passes straight overhead at noon along the parallel of 22.3° south. In London, the day lasts about 8 hours 5 minutes.
Beyond 68° south the Sun no longer sets; beyond 68° north it no longer rises.
The line between day and night is tilted on the globe exactly as on this day of the year. On the dark side you can see the lights of towns.
Britain & Ireland · Royal Opera House
1735
The premiere of George Frideric Handel's Ariodante takes place at the Royal Opera House, Covent Garden.
On the map: Royal Opera House.
Also on the day’s list of Wikipedia in Spanish.
Europe · 1198 papal election
1198
Lotario dei Conti was elected as Pope Innocent III; he later worked to restore papal power in Rome.
On the map: the coordinates Wikidata gives for the article “1198 papal election”.
Also on the day’s list of Wikipedia in Chinese.
Europe · Königsberg
1547
The first Lithuanian-language book, the Catechism of Martynas Mažvydas, is published in Königsberg.
On the map: Königsberg.
Europe · Trans-en-Provence
1981
A local farmer reports a UFO sighting in Trans-en-Provence, France, claimed to be "perhaps the most completely and carefully documented sighting of all time".
On the map: Trans-en-Provence.
North America · Blackstone Library
1904
Blackstone Library, the first branch of the Chicago Public Library system, was dedicated.
On the map: Blackstone Library.
North America · Richardson, Texas
1991
Jeremy Wade Delle committed suicide in his high-school class in Richardson, Texas, an event that inspired the Pearl Jam song "Jeremy".
On the map: Richardson, Texas.
8 January
Born on 8 January#
The English Wikipedia lists 185 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 8 January
1935
Elvis Presley, American singer, guitarist, and actor (died 1977)
Place of birth: Tupelo.
Born on 8 January
1942
Stephen Hawking, English physicist and author (died 2018)
Place of birth: Oxford.
Born on 8 January
1947
David Bowie, English singer-songwriter, producer, and actor (died 2016)
Place of birth: Brixton.
Born on 8 January
1823
Alfred Russel Wallace, Welsh geographer, biologist, and explorer (died 1913)
Place of birth: Usk.
Born on 8 January
1967
R. Kelly, American singer-songwriter, producer, and sex offender
Place of birth: Chicago.
Born in Britain and Ireland
1824
Wilkie Collins, English novelist, playwright, and short story writer (died 1889)
Place of birth: London.
Born in Britain and Ireland
1937
Shirley Bassey, Welsh singer
Place of birth: Cardiff.
Born in Britain and Ireland
1941
Graham Chapman, English actor and screenwriter (died 1989)
Place of birth: Stoneygate.
8 January
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: 8 January 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 8 January
The list is the English Wikipedia’s, in its own wording, as it stood in October 2026. 26 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.
- 307
Sima Chi becomes emperor of the Jin dynasty in succession to his brother, Sima Zhong, despite a challenge from his other brother, Sima Ying.
no place on the mapWikipedia: Emperor Huai of Jin - 871
Æthelred I and Alfred the Great lead a West Saxon army to repel an invasion by Danelaw Vikings.
Britain & Ireland · Battle of AshdownWikipedia: Battle of Ashdown - 1198
Lotario dei Conti was elected as Pope Innocent III; he later worked to restore papal power in Rome.
Europe · 1198 papal electionWikipedia: 1198 papal election - 1297
François Grimaldi, disguised as a monk, leads his men to capture the fortress protecting the Rock of Monaco, establishing his family as the rulers of Monaco.
Europe · MonacoWikipedia: François Grimaldi - 1454
The papal bull Romanus Pontifex awards the Kingdom of Portugal exclusive trade and colonization rights to all of Africa south of Cape Bojador.
Europe · Kingdom of PortugalWikipedia: Papal bull - 1499
Louis XII of France marries Anne of Brittany in accordance with a law set by his predecessor, Charles VIII.
no place on the mapWikipedia: Louis XII - 1547
The first Lithuanian-language book, the Catechism of Martynas Mažvydas, is published in Königsberg.
Europe · KönigsbergWikipedia: Lithuanian language - 1697
Scottish student Thomas Aikenhead became the last person in Great Britain to be executed for blasphemy.
no place on the mapWikipedia: Thomas Aikenhead - 1735
The premiere of George Frideric Handel's Ariodante takes place at the Royal Opera House, Covent Garden.
Britain & Ireland · Royal Opera HouseWikipedia: Royal Opera House - 1746
Second Jacobite rising: Bonnie Prince Charlie occupies Stirling.
Britain & Ireland · StirlingWikipedia: Jacobite rising of 1745 - 1790
George Washington delivers the first State of the Union address in New York City.
no place on the mapWikipedia: State of the Union - 1806
The Dutch Cape Colony in southern Africa becomes the British Cape Colony as a result of the Battle of Blaauwberg.
Africa · Battle of BlaauwbergWikipedia: Battle of Blaauwberg - 1811
Charles Deslondes leads an unsuccessful slave revolt in the North American settlements of St. Charles and St. James, Louisiana.
North America · St. Charles Parish, LouisianaWikipedia: 1811 German Coast uprising - 1815
War of 1812: Battle of New Orleans: Andrew Jackson leads American forces in victory over the British.
North America · Battle of New OrleansWikipedia: Battle of New Orleans - 1828
The Democratic Party of the United States is organized.
no place on the mapWikipedia: Democratic Party - 1835
US President Andrew Jackson announces a celebratory dinner after having reduced the United States national debt to zero for the only time.
no place on the mapWikipedia: Andrew Jackson - 1863
American Civil War: Second Battle of Springfield.
North America · Second Battle of SpringfieldWikipedia: American Civil War - 1867
The United States Congress passes the bill to allow African American men the right to vote in Washington, D.C.
no place on the mapWikipedia: African Americans - 1877
Crazy Horse and his warriors fight their last battle against the United States Cavalry at Wolf Mountain, Montana Territory.
North America · Battle of Wolf MountainWikipedia: Battle of Wolf Mountain - 1889
Herman Hollerith is issued US patent #395,791 for the 'Art of Applying Statistics' — his punched card calculator.
no place on the mapWikipedia: Herman Hollerith - 1900
President William McKinley places Alaska under military rule.
North America · AlaskaWikipedia: William McKinley - 1904
Blackstone Library, the first branch of the Chicago Public Library system, was dedicated.
North America · Blackstone LibraryWikipedia: Blackstone Library - 1912
The African National Congress is founded, under the name South African Native National Congress (SANNC).
no place on the mapWikipedia: African National Congress - 1912
The city of San Diego passes an ordinance restricting free speech, provoking months of civil unrest between socialist Wobblies and business leaders that become the bloodiest free speech fight in history.
North America · San DiegoWikipedia: San Diego - 1918
U.S. President Woodrow Wilson announces his "Fourteen Points" as conditions for ending World War I.
no place on the mapWikipedia: Fourteen Points - 1920
The steel strike of 1919 ends in failure for the Amalgamated Association of Iron, Steel and Tin Workers labor union.
no place on the mapWikipedia: 1919 General Steel Strike - 1926
Abdul-Aziz ibn Saud is crowned King of Hejaz.
no place on the mapWikipedia: Ibn Saud - 1926
Crown Prince Nguyễn Phúc Vĩnh Thuỵ is crowned emperor of Vietnam, the country's last monarch.
no place on the mapWikipedia: Bảo Đại - 1928
The Committee for Union Action is established in Guatemala.
Latin America · GuatemalaWikipedia: Comité Pro Acción Sindical - 1933
Anarchist insurrection of January 1933 breaks out in Barcelona, Spain.
Europe · BarcelonaWikipedia: Anarchist insurrection of January 1933 - 1936
Kashf-e hijab decree is made and immediately enforced by Reza Shah, Iran's head of state, banning the wearing of Islamic veils in public.
no place on the mapWikipedia: Kashf-e hijab - 1939
The New Deal for Aborigines was formally announced by the Australian government, providing for full civil rights for Indigenous Australians in exchange for cultural assimilation.
no place on the mapWikipedia: Indigenous Australians - 1940
World War II: Britain introduces food rationing.
no place on the mapWikipedia: World War II - 1945
World War II: Philippine Commonwealth troops under the Philippine Commonwealth Army units enter the province of Ilocos Sur in Northern Luzon and attack invading Japanese Imperial forces.
no place on the mapWikipedia: Commonwealth of the Philippines - 1946
Andrei Zhdanov, Chairman of the Finnish Allied Commission, submits to the Finnish War Criminal Court an interrogation report by General Erich Buschenhagen, a German prisoner of war, on the contacts between Finnish and German military personnel before the Continuation War and a copy of Hitler's Barbarossa plan.
no place on the mapWikipedia: Continuation War - 1956
Operation Auca: Five U.S. missionaries are killed by the Waorani of Ecuador shortly after making first contact.
Latin America · EcuadorWikipedia: Operation Auca - 1959
Charles de Gaulle is proclaimed as the first President of the French Fifth Republic.
no place on the mapWikipedia: Charles de Gaulle - 1961
In France a referendum supports Charles de Gaulle's policies in Algeria.
Africa · AlgeriaWikipedia: 1961 French referendum on Algerian self-determination - 1964
President Lyndon B. Johnson declares a "War on Poverty" in the United States.
no place on the mapWikipedia: War on Poverty - 1972
Bowing to international pressure, President of Pakistan Zulfikar Ali Bhutto releases Bengali leader Sheikh Mujibur Rahman from prison, who had been arrested after declaring the independence of Bangladesh.
Asia · BangladeshWikipedia: President of Pakistan - 1973
Soviet space mission Luna 21 is launched.
Asia · Soviet UnionWikipedia: Soviet Union - 1973
Watergate scandal: The trial of seven men accused of illegal entry into Democratic Party headquarters at Watergate begins.
North America · Watergate complexWikipedia: Watergate scandal - 1975
Ella T. Grasso becomes Governor of Connecticut, the first woman to serve as a governor in the United States other than by succeeding her husband.
no place on the mapWikipedia: Ella Grasso - 1977
Three bombs explode in Moscow, Russia, Soviet Union, within 37 minutes, killing seven. The bombings are attributed to an Armenian separatist group.
Europe · 1977 Moscow bombingsWikipedia: 1977 Moscow bombings - 1981
A local farmer reports a UFO sighting in Trans-en-Provence, France, claimed to be "perhaps the most completely and carefully documented sighting of all time".
Europe · Trans-en-ProvenceWikipedia: Trans-en-Provence case - 1982
Breakup of the Bell System: In the United States, AT&T agrees to divest itself of twenty-two subdivisions.
no place on the mapWikipedia: Breakup of the Bell System - 1989
Kegworth air disaster: British Midland Flight 92, a Boeing 737-400, crashes into the M1 motorway, killing 47 of the 126 people on board.
Britain & Ireland · Kegworth air disasterWikipedia: Kegworth air disaster - 1991
Jeremy Wade Delle committed suicide in his high-school class in Richardson, Texas, an event that inspired the Pearl Jam song "Jeremy".
North America · Richardson, TexasWikipedia: Richardson, Texas - 1994
Russian cosmonaut Valeri Polyakov on Soyuz TM-18 leaves for Mir. He would stay on the space station until March 22, 1995, for a record 437 days in space.
no place on the mapWikipedia: Astronaut - 1996
An Antonov An-32 cargo aircraft crashes into a crowded market in Kinshasa, Zaire, killing up to 223 people on the ground; two of six crew members are also killed.
Africa · 1996 Air Africa Antonov An-32 crashWikipedia: 1996 Air Africa Antonov An-32 crash - 2002
President of the United States George W. Bush signs into law the No Child Left Behind Act.
no place on the mapWikipedia: George W. Bush - 2003
Air Midwest Flight 5481 crashes at Charlotte-Douglas Airport, in Charlotte, North Carolina, killing all 21 people on board.
North America · Air Midwest Flight 5481Wikipedia: Air Midwest Flight 5481 - 2003
Turkish Airlines Flight 634 crashes near Diyarbakır Airport, Turkey, killing the entire crew and 70 of the 75 passengers.
Asia · Turkish Airlines Flight 634Wikipedia: Turkish Airlines Flight 634 - 2004
The RMS Queen Mary 2, then the largest ocean liner ever built, is christened by her namesake's granddaughter, Queen Elizabeth II.
no place on the mapWikipedia: Queen Mary 2 - 2005
The nuclear sub USS San Francisco collides at full speed with an undersea mountain south of Guam. One man is killed, but the sub surfaces and is repaired.
Oceania · GuamWikipedia: USS San Francisco - 2009
A 6.1-magnitude earthquake in northern Costa Rica kills 15 people and injures 32.
Latin America · 2009 Cinchona earthquakeWikipedia: 2009 Cinchona earthquake - 2010
Gunmen from an offshoot of the Front for the Liberation of the Enclave of Cabinda attack a bus carrying the Togo national football team on its way to the 2010 Africa Cup of Nations, killing three people and injuring another nine.
Africa · Togo national football team attackWikipedia: Togo national football team attack - 2011
Sitting US Congresswoman Gabby Giffords is shot in the head along with 18 others in a mass shooting in Tucson, Arizona. Giffords survived the assassination attempt, but six others died, including John Roll, a federal judge.
North America · 2011 Tucson shootingWikipedia: 2011 Tucson shooting - 2016
Joaquín Guzmán, widely regarded as the world's most powerful drug trafficker, is recaptured following his escape from a maximum security prison in Mexico.
no place on the mapWikipedia: El Chapo - 2016
West Air Sweden Flight 294 crashes near the Swedish reservoir of Akkajaure; both pilots, the only people on board, are killed.
Europe · West Air Sweden Flight 294Wikipedia: West Air Sweden Flight 294 - 2020
Ukraine International Airlines Flight 752 crashes immediately after takeoff at Tehran Imam Khomeini International Airport; all 176 on board are killed. The plane was shot down by an Iranian anti-aircraft missile.
Asia · Imam Khomeini International AirportWikipedia: Ukraine International Airlines Flight 752 - 2021
Twenty-three people are killed in what is described as a police ″massacre″ in La Vega, Caracas, Venezuela.
Latin America · La VegaWikipedia: La Vega raid - 2023
Supporters of former Brazil president Jair Bolsonaro storm the Brazilian Congress.
Latin America · 8 January Brasília attacksWikipedia: 8 January Brasília attacks
Who was born on 8 January
In order of how many Wikipedia editions have an article about each. The first 60 of 185 are shown.
- 1935
Elvis Presley, American singer, guitarist, and actor (died 1977)
TupeloWikipedia: Elvis Presley - 1942
Stephen Hawking, English physicist and author (died 2018)
- 1947
David Bowie, English singer-songwriter, producer, and actor (died 2016)
BrixtonWikipedia: David Bowie - 1823
Alfred Russel Wallace, Welsh geographer, biologist, and explorer (died 1913)
- 1967
R. Kelly, American singer-songwriter, producer, and sex offender
ChicagoWikipedia: R. Kelly - 1942
Junichirō Koizumi, Japanese politician, 56th Prime Minister of Japan
YokosukaWikipedia: Junichiro Koizumi - 1867
Emily Greene Balch, American economist and author, Nobel Prize laureate (died 1961)
Jamaica PlainWikipedia: Emily Greene Balch - 1891
Walther Bothe, German physicist and academic, Nobel Prize laureate (died 1957)
OranienburgWikipedia: Walther Bothe - 1902
Carl Rogers, American psychologist and academic (died 1987)
Oak ParkWikipedia: Carl Rogers - 1601
Baltasar Gracián, Spanish priest and author (died 1658)
Belmonte de GraciánWikipedia: Baltasar Gracián - 1824
Wilkie Collins, English novelist, playwright, and short story writer (died 1889)
- 1870
Miguel Primo de Rivera, Spanish general and politician, Prime Minister of Spain (died 1930)
Jerez de la FronteraWikipedia: Miguel Primo de Rivera - 1992
Koke, Spanish footballer
MadridWikipedia: Koke - 1934
Jacques Anquetil, French cyclist (died 1987)
Mont-Saint-AignanWikipedia: Jacques Anquetil - 1937
Shirley Bassey, Welsh singer
CardiffWikipedia: Shirley Bassey - 1912
José Ferrer, Puerto Rican-American actor and director (died 1992)
SanturceWikipedia: José Ferrer - 1979
Adrian Mutu, Romanian footballer
CălineștiWikipedia: Adrian Mutu - 1941
Graham Chapman, English actor and screenwriter (died 1989)
StoneygateWikipedia: Graham Chapman - 1836
Lawrence Alma-Tadema, Dutch-English painter and academic (died 1912)
- 2000
Noah Cyrus, American singer, songwriter, and actress
NashvilleWikipedia: Noah Cyrus - 1979
Stipe Pletikosa, Croatian footballer
- 1987
Cynthia Erivo, English actress and singer-songwriter
StockwellWikipedia: Cynthia Erivo - 1991
Stefan Savić, Montenegrin footballer
MojkovacWikipedia: Stefan Savić - 1885
John Curtin, Australian journalist and politician, 14th Prime Minister of Australia (died 1945)
CreswickWikipedia: John Curtin - 1904
Karl Brandt, German physician and SS officer (died 1948)
MulhouseWikipedia: Karl Brandt - 1977
Amber Benson, American actress, writer, director, and producer
BirminghamWikipedia: Amber Benson - 1910
Galina Ulanova, Russian actress and ballerina (died 1998)
Saint PetersburgWikipedia: Galina Ulanova - 1830
Hans von Bülow, German pianist and composer (died 1894)
DresdenWikipedia: Hans von Bülow - 1999
Damiano David, Italian singer-songwriter
- 1589
Ivan Gundulić, Croatian poet and playwright (died 1638)
DubrovnikWikipedia: Ivan Gundulić - 1632
Samuel von Pufendorf, German economist and jurist (died 1694)
DorfchemnitzWikipedia: Samuel von Pufendorf - 1899
S. W. R. D. Bandaranaike, Sri Lankan lawyer and politician, 4th Prime Minister of Sri Lanka (died 1959)
- 1908
William Hartnell, English actor (died 1975)
St PancrasWikipedia: William Hartnell - 1988
Adrián López, Spanish footballer
TebergaWikipedia: Adrián López - 1864
Prince Albert Victor, Duke of Clarence and Avondale (died 1892)
- 1980
Sam Riley, English actor and singer
MenstonWikipedia: Sam Riley - 1905
Carl Gustav Hempel, German philosopher from the Vienna and the Berlin Circle (died 1997)
OranienburgWikipedia: Carl Gustav Hempel - 1958
Betsy DeVos, American businesswoman and politician, 11th Secretary of Education
HollandWikipedia: Betsy DeVos - 1821
James Longstreet, American general and diplomat, United States Ambassador to Turkey (died 1904)
Edgefield CountyWikipedia: James Longstreet - 1638
Elisabetta Sirani, Italian painter (died 1665)
BolognaWikipedia: Elisabetta Sirani - 1923
Joseph Weizenbaum, German-American computer scientist and author (died 2008)
- 1946
Robby Krieger, American guitarist and songwriter
Los AngelesWikipedia: Robby Krieger - 1924
Ron Moody, English actor and singer (died 2015)
LondonWikipedia: Ron Moody - 1971
Pascal Zuberbühler, Swiss footballer and coach
FrauenfeldWikipedia: Pascal Zuberbühler - 1979
Sarah Polley, Canadian actress and director
TorontoWikipedia: Sarah Polley - 1965
Michelle Forbes, American actress
- 1788
Rudolf of Austria, Austrian archduke and archbishop (died 1831)
- 1888
Richard Courant, German-American mathematician and academic (died 1972)
LubliniecWikipedia: Richard Courant - 1939
Carolina Herrera, Venezuelan-American fashion designer
CaracasWikipedia: Carolina Herrera - 1812
Sigismond Thalberg, Swiss pianist and composer (died 1871)
- 1923
Larry Storch, American actor and comedian (died 2022)
New York CityWikipedia: Larry Storch - 1942
Yvette Mimieux, American actress (died 2022)
HollywoodWikipedia: Yvette Mimieux - 1946
Miguel Ángel Félix Gallardo, Mexican drug lord
- 1981
Genevieve Cortese, American actress
San FranciscoWikipedia: Genevieve Padalecki - 1859
Fanny Bullock Workman, American mountaineer, geographer, and cartographer (died 1925)
WorcesterWikipedia: Fanny Bullock Workman - 1929
Saeed Jaffrey, Indian-British actor (died 2015)
MalerkotlaWikipedia: Saeed Jaffrey - 1941
Boris Vallejo, Peruvian-American painter
- 1951
Kenny Anthony, Saint Lucian politician, 5th Prime Minister of Saint Lucia
Laborie QuarterWikipedia: Kenny Anthony - 1988
Michael Mancienne, English footballer
IsleworthWikipedia: Michael Mancienne - 1891
Bronislava Nijinska, Russian dancer and choreographer (died 1972)
What is celebrated on 8 January
- Babinden (Belarus, Russia)
- Christian feast day: Abo of Tiflis
- Christian feast day: Apollinaris Claudius
- Christian feast day: Blessed Eurosia Fabris
- Christian feast day: Gauchito Gil (Folk Catholicism)
- Christian feast day: Gudula
- Christian feast day: Harriet Bedell (Episcopal Church (USA))
- Christian feast day: Lawrence Giustiniani
- Christian feast day: Lucian of Beauvais
- Christian feast day: Maximus of Pavia
- Christian feast day: Our Lady of Prompt Succor (Roman Catholic Church)
- Christian feast day: Pega (Anglican and Roman Catholic churches)
- Christian feast day: Severinus of Noricum
- Christian feast day: Thorfinn of Hamar
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.