A birthday on the globe
28 October on the globe: what happened in the world on this day, and who was born
For 28 October, the English Wikipedia lists 61 events and 243 births. 33 of the events stand at their places as rays of light; seven 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 28 October through the years
The Earth on 28 October
The picture on the globe was assembled by NASA from satellite photographs taken in October 2004: the snow, the ice and the green are those of the month.
On 28 October the Sun passes straight overhead at noon along the parallel of 13.1° south. In London, the day lasts about 9 hours 55 minutes.
Beyond 77° south the Sun no longer sets; beyond 77° 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.
Europe · 1958 conclave
1958
John XXIII is elected Pope.
On the map: the coordinates Wikidata gives for the article “1958 conclave”.
Asia · Beijing
1420
Beijing is officially designated the capital of the Ming dynasty when the Forbidden City is completed.
On the map: Beijing.
Also on the day’s list of Wikipedia in Chinese.
Asia · Jakarta
1928
Indonesia Raya, now the national anthem of Indonesia, is first played during the Second Indonesian Youth Congress.
On the map: Jakarta.
Oceania · Archives New Zealand National Office
1835
The United Tribes of New Zealand are established with the signature of the Declaration of Independence.
On the map: Archives New Zealand National Office.
Latin America · Universidad Santo Tomás de Aquino
1538
The Universidad Santo Tomás de Aquino is founded in what is now the Dominican Republic.
On the map: Universidad Santo Tomás de Aquino.
Also on the day’s list of Wikipedia in Spanish.
North America · Harvard University
1636
The Massachusetts Bay Colony votes to establish a theological college, which would later become Harvard University.
On the map: Harvard University.
Also on the day’s list of Wikipedia in Romanian and Chinese.
North America · Statue of Liberty
1886
US president Grover Cleveland dedicates the Statue of Liberty.
On the map: Statue of Liberty.
Also on the day’s list of Wikipedia in Spanish, Romanian and Chinese.
North America · St. Louis
1965
In St. Louis, Missouri, U.S., the 630-foot (190 m)-tall steel catenary Gateway Arch was completed.
On the map: St. Louis.
Also on the day’s list of Wikipedia in Romanian and Chinese.
28 October
What the other Wikipedias remember#
For these years the English list has nothing on this day. The events below come from the same day’s lists on Wikipedia in Romanian and were translated for this page.
From Wikipedia in Romanian · Statue of Liberty
1936
The American president, Franklin Roosevelt, rededicates the Statue of Liberty on its 50th anniversary.
On the map: Statue of Liberty.
Translated from the list on Wikipedia in Romanian.
The article on Wikipedia in Romanian: Statuia Libertății din New York
28 October
Born on 28 October#
The English Wikipedia lists 243 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 28 October
1466
Erasmus, Dutch philosopher (died 1536)
Place of birth: Rotterdam.
Born on 28 October
1967
Julia Roberts, American actress and producer
Place of birth: Atlanta.
Born on 28 October
1974
Joaquin Phoenix, American actor and producer
Place of birth: San Juan.
Born on 28 October
1914
Jonas Salk, American biologist and physician (died 1995)
Place of birth: New York City.
Born on 28 October
1933
Garrincha, Brazilian footballer (died 1983)
Place of birth: Magé.
Born in Britain and Ireland
1903
Evelyn Waugh, English journalist, author, and critic (died 1966)
Place of birth: West Hampstead.
Born in Britain and Ireland
1909
Francis Bacon, Irish painter and illustrator (died 1992)
Place of birth: Dublin.
Born in Britain and Ireland
1982
Matt Smith, English actor and director
Place of birth: Northampton.
28 October
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: 28 October 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 28 October
The list is the English Wikipedia’s, in its own wording, as it stood in October 2026. 21 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.
- 97
Roman emperor Nerva is forced by the Praetorian Guard to adopt general Marcus Ulpius Trajanus as his heir and successor.
no place on the mapWikipedia: Nerva - 306
Maxentius is proclaimed Roman emperor.
no place on the mapWikipedia: Maxentius - 312
Constantine I defeats Maxentius, becoming the sole Roman emperor in the West.
Europe · Battle of the Milvian BridgeWikipedia: Battle of the Milvian Bridge - 969
The Byzantine Empire recovers Antioch from Arab rule.
Asia · Siege of AntiochWikipedia: Siege of Antioch - 1344
The lower town of Smyrna is captured by Latin Christians in response to Aydınid piracy during the Smyrniote crusades.
Asia · AydinidsWikipedia: Smyrniote crusades - 1420
Beijing is officially designated the capital of the Ming dynasty when the Forbidden City is completed.
Asia · BeijingWikipedia: Beijing - 1449
Christian I is crowned king of Denmark.
no place on the mapWikipedia: Christian I of Denmark - 1453
Ladislaus the Posthumous is crowned king of Bohemia in Prague.
no place on the mapWikipedia: Ladislaus the Posthumous - 1492
Christopher Columbus lands in Cuba on his first voyage to the New World, surmising that it is Japan.
Latin America · CubaWikipedia: Voyages of Christopher Columbus - 1516
Second Ottoman–Mamluk War: Mamluks fail to stop the Ottoman advance towards Egypt at the Battle of Yaunis Khan.
Asia · Battle of Yaunis KhanWikipedia: Battle of Yaunis Khan - 1520
Ferdinand Magellan reaches the Pacific Ocean.
no place on the mapWikipedia: Ferdinand Magellan - 1531
Abyssinian–Adal war: The Adal Sultanate seizes southern Ethiopia.
Africa · Bale ProvinceWikipedia: Battle of Amba Sel - 1538
The Universidad Santo Tomás de Aquino is founded in what is now the Dominican Republic.
Latin America · Universidad Santo Tomás de AquinoWikipedia: Universidad Santo Tomás de Aquino - 1628
French Wars of Religion: The Siege of La Rochelle ends with the surrender of the Huguenots after fourteen months.
Europe · Siege of La RochelleWikipedia: French Wars of Religion - 1636
The Massachusetts Bay Colony votes to establish a theological college, which would later become Harvard University.
North America · Harvard UniversityWikipedia: Massachusetts Bay Colony - 1640
The Treaty of Ripon is signed, ending the hostilities of the Second Bishops' War.
no place on the mapWikipedia: Treaty of Ripon - 1664
The Duke of York and Albany's Maritime Regiment of Foot, later to be known as the Royal Marines, is established.
no place on the mapWikipedia: Royal Marines - 1707
The 1707 Hōei earthquake causes more than 5,000 deaths in Japan.
Asia · 1707 Hōei earthquakeWikipedia: 1707 Hōei earthquake - 1726
The novel Gulliver's Travels written by Jonathan Swift is published.
no place on the mapWikipedia: Gulliver's Travels - 1746
The 1746 Lima–Callao earthquake causes up to 6,000 deaths in Peru, the deadliest in its history up to that point.
Latin America · 1746 Lima–Callao earthquakeWikipedia: 1746 Lima–Callao earthquake - 1776
American Revolutionary War: British troops under General William Howe attack General George Washington's Continental Army and capture Chatterton Hill in the Battle of White Plains during the New York and New Jersey campaign.
North America · Battle of White PlainsWikipedia: Battle of White Plains - 1834
The Pinjarra massacre occurs in the Swan River Colony. An estimated 30 Noongar people are killed by British colonists.
Oceania · Pinjarra massacreWikipedia: Pinjarra massacre - 1835
In the first major engagement of the Texas Revolution, the Texian Army repelled a Mexican attack at the grounds of Mission Concepcion south of Downtown San Antonio.
North America · Battle of ConcepciónWikipedia: Battle of Concepción - 1835
The United Tribes of New Zealand are established with the signature of the Declaration of Independence.
Oceania · Archives New Zealand National OfficeWikipedia: He Whakaputanga - 1864
American Civil War: A Union attack on the Confederate capital of Richmond is repulsed.
North America · Battle of Fair Oaks & Darbytown RoadWikipedia: American Civil War - 1886
US president Grover Cleveland dedicates the Statue of Liberty.
North America · Statue of LibertyWikipedia: Statue of Liberty - 1891
The Mino–Owari earthquake, the largest inland earthquake in Japan's history, occurs.
Asia · 1891 Mino–Owari earthquakeWikipedia: 1891 Mino–Owari earthquake - 1893
Pyotr Tchaikovsky's Symphony No. 6 in B Minor, Pathétique receives its première performance only nine days before the composer's death.
no place on the mapWikipedia: Pyotr Ilyich Tchaikovsky - 1918
World War I: A new Polish government in western Galicia is established, triggering the Polish–Ukrainian War.
no place on the mapWikipedia: World War I - 1918
World War I: Czech politicians peacefully take over the city of Prague, thus establishing the First Czechoslovak Republic.
Europe · First Czechoslovak RepublicWikipedia: First Czechoslovak Republic - 1919
The U.S. Congress passes the Volstead Act over President Woodrow Wilson's veto, paving the way for Prohibition to begin the following January.
no place on the mapWikipedia: Volstead Act - 1922
Italian fascists led by Benito Mussolini march on Rome and take over the Italian government.
Europe · Kingdom of ItalyWikipedia: March on Rome - 1925
The funerary mask of Tutankhamun, possibly originally made for Queen Neferneferuaten, was uncovered for the first time in approximately 3,250 years.
no place on the mapWikipedia: Mask of Tutankhamun - 1928
Indonesia Raya, now the national anthem of Indonesia, is first played during the Second Indonesian Youth Congress.
Asia · JakartaWikipedia: Youth Pledge - 1940
World War II: Greece rejects Italy's ultimatum. Italy invades Greece through Albania a few hours later.
Europe · Kingdom of Albania in personal union with ItalyWikipedia: World War II - 1942
The Alaska Highway first connects Alaska to the North American railway network at Dawson Creek in Canada.
North America · Dawson CreekWikipedia: Alaska Highway - 1948
Ecological disaster in Donora, Pennsylvania.
North America · 1948 Donora smogWikipedia: 1948 Donora smog - 1948
Paul Hermann Müller is awarded the Nobel Prize in Physiology or Medicine for his discovery of the insecticidal properties of DDT.
no place on the mapWikipedia: Paul Hermann Müller - 1949
An Air France Lockheed Constellation crashes in the Azores, killing all 48 people on board.
Europe · Air France Flight 009Wikipedia: Air France Flight 009 - 1954
Aeroflot Flight 136 crashes near Krasnoyarsk, killing 19.
Asia · KrasnoyarskWikipedia: Krasnoyarsk - 1956
Hungarian Revolution: A de facto ceasefire comes into effect between armed revolutionaries and Soviet troops, who begin to withdraw from Budapest. Communist officials and facilities come under attack by revolutionaries.
Europe · Hungarian People's RepublicWikipedia: Hungarian Revolution of 1956 - 1958
John XXIII is elected Pope.
Europe · 1958 conclaveWikipedia: 1958 conclave - 1962
The Cuban Missile Crisis ends and Premier Nikita Khrushchev orders the removal of Soviet missiles from Cuba.
Latin America · Cuban Missile CrisisWikipedia: Cuban Missile Crisis - 1965
In St. Louis, Missouri, U.S., the 630-foot (190 m)-tall steel catenary Gateway Arch was completed.
North America · St. LouisWikipedia: Gateway Arch - 1965
Pope Paul VI promulgates Nostra aetate, by which the Roman Catholic Church officially recognizes the legitimacy of non-Christian faiths.
no place on the mapWikipedia: Pope Paul VI - 1971
Prospero becomes the only British satellite to be launched by a British rocket.
no place on the mapWikipedia: Prospero - 1982
The Spanish general election begins fourteen years of rule by the Spanish Socialist Workers' Party.
no place on the mapWikipedia: 1982 Spanish general election - 1989
Aloha Island Air Flight 1712, a Twin Otter 300, crashed into terrain at night in Hawaii killing all 20 occupants onboard.
North America · Aloha IslandAir Flight 1712Wikipedia: Aloha IslandAir Flight 1712 - 1990
Georgia holds its only free election under Soviet rule.
no place on the mapWikipedia: 1990 Georgian Supreme Soviet election - 1992
Hans-Adam II threatened to dismiss the Landtag of Liechtenstein over disagreements on the date of a referendum for the country's accession to the EEA.
no place on the mapWikipedia: 1992 Liechtenstein constitutional crisis - 1995
The Baku Metro fire sees 289 people killed and 270 injured.
Asia · 1995 Baku Metro fireWikipedia: 1995 Baku Metro fire - 2006
A funeral service takes place at the Bykivnia graves for Ukrainians who were killed by the Soviet secret police.
Europe · Bykivnia gravesWikipedia: Bykivnia graves - 2007
Cristina Fernández de Kirchner becomes the first directly elected female President of Argentina.
no place on the mapWikipedia: Cristina Fernández de Kirchner - 2009
NASA successfully launches the Ares I-X mission, the only rocket launch for its short-lived Constellation program.
no place on the mapWikipedia: NASA - 2009
The 28 October 2009 Peshawar bombing kills 117 and wounds 213.
Asia · 28 October 2009 Peshawar bombingWikipedia: 28 October 2009 Peshawar bombing - 2009
US President Barack Obama signs the Matthew Shepard and James Byrd Jr. Hate Crimes Prevention Act.
no place on the mapWikipedia: Matthew Shepard and James Byrd Jr. Hate Crimes Prevention Act - 2013
Five people are killed and 38 are injured after a car crashes into barriers at Tiananmen Square in China.
Asia · 2013 Tiananmen Square attackWikipedia: 2013 Tiananmen Square attack - 2014
A rocket carrying NASA's Cygnus CRS Orb-3 resupply mission to the International Space Station explodes seconds after taking off from the Mid-Atlantic Regional Spaceport in Wallops Island, Virginia.
North America · Mid-Atlantic Regional SpaceportWikipedia: Cygnus Orb-3 - 2018
Jair Bolsonaro is elected president of Brazil with 57 million votes, with Workers' Party candidate Fernando Haddad as the runner-up. It is the first time in 16 years that a Workers' Party candidate is not elected president.
Latin America · BrazilWikipedia: 2018 Brazilian general election - 2023
The 2023 Rugby World Cup final is held at the Stade de France in Saint-Denis, France. It saw South Africa defeat New Zealand 12 to 11, claiming their fourth Webb Ellis Cup, becoming the first nation to do so.
Europe · Stade de FranceWikipedia: 2023 Rugby World Cup final - 2025
Hurricane Melissa makes landfall near Black River, Jamaica, killing over 30 people, as well as tying the 1935 Labor Day hurricane as the most intense landfall in the North Atlantic.
Latin America · Black River, JamaicaWikipedia: 1935 Labor Day hurricane
What the other Wikipedias remember
For these years the English list has nothing on this day. The events below come from the same day’s lists on Wikipedia in Romanian and were translated for this page.
- 1936
The American president, Franklin Roosevelt, rededicates the Statue of Liberty on its 50th anniversary.
North America · Statue of LibertyTranslated from the list on Wikipedia in RomanianWikipedia: Statuia Libertății din New York
Who was born on 28 October
In order of how many Wikipedia editions have an article about each. The first 60 of 243 are shown.
- 1955
Bill Gates, American businessman and philanthropist, co-founded Microsoft
SeattleWikipedia: Bill Gates - 1466
Erasmus, Dutch philosopher (died 1536)
RotterdamWikipedia: Erasmus - 1956
Mahmoud Ahmadinejad, Iranian engineer and politician, 6th President of Iran
- 1967
Julia Roberts, American actress and producer
AtlantaWikipedia: Julia Roberts - 1974
Joaquin Phoenix, American actor and producer
San JuanWikipedia: Joaquin Phoenix - 1914
Jonas Salk, American biologist and physician (died 1995)
New York CityWikipedia: Jonas Salk - 1933
Garrincha, Brazilian footballer (died 1983)
- 1903
Evelyn Waugh, English journalist, author, and critic (died 1966)
West HampsteadWikipedia: Evelyn Waugh - 1909
Francis Bacon, Irish painter and illustrator (died 1992)
DublinWikipedia: Francis Bacon - 1982
Matt Smith, English actor and director
NorthamptonWikipedia: Matt Smith - 1949
Caitlyn Jenner, American decathlete and actress
Mount KiscoWikipedia: Caitlyn Jenner - 1981
Milan Baroš, Czech footballer
Valašské MeziříčíWikipedia: Milan Baroš - 1017
Henry III, Holy Roman Emperor (died 1056)
- 1860
Kanō Jigorō, Japanese martial artist (died 1938)
- 1914
Richard Laurence Millington Synge, English biochemist and academic, Nobel Prize laureate (died 1994)
- 1930
Bernie Ecclestone, English businessman
- 1984
Obafemi Martins, Nigerian footballer
- 1987
Frank Ocean, American singer-songwriter
Long BeachWikipedia: Frank Ocean - 1978
Gwendoline Christie, English actress
WorthingWikipedia: Gwendoline Christie - 1815
Ľudovít Štúr, Slovak philologist and politician (died 1856)
UhrovecWikipedia: Ľudovít Štúr - 1902
Elsa Lanchester, English-American actress and singer (died 1986)
Metropolitan Borough of LewishamWikipedia: Elsa Lanchester - 1944
Coluche, French comedian and actor (died 1986)
14th arrondissement of ParisWikipedia: Coluche - 1955
Indra Nooyi, Indian-American businesswoman
ChennaiWikipedia: Indra Nooyi - 1929
Joan Plowright, English actress (died 2025)
- 1979
Jawed Karim, American computer scientist
MerseburgWikipedia: Jawed Karim - 1989
Camille Muffat, French swimmer (died 2015)
- 1963
Lauren Holly, American actress
BristolWikipedia: Lauren Holly - 1939
Jane Alexander, American actress and producer
- 1946
Wim Jansen, Dutch footballer and manager (died 2022)
RotterdamWikipedia: Wim Jansen - 1846
Auguste Escoffier, French chef and author (died 1935)
Villeneuve-LoubetWikipedia: Auguste Escoffier - 1867
Sister Nivedita, Irish-Indian nurse, author, and educator (died 1911)
County TyroneWikipedia: Sister Nivedita - 1696
Maurice de Saxe, French general (died 1750)
- 1837
Tokugawa Yoshinobu, Japanese shōgun (died 1913)
KoishikawaWikipedia: Tokugawa Yoshinobu - 1985
Troian Bellisario, American actress
Los AngelesWikipedia: Troian Bellisario - 1980
Alan Smith, English footballer and coach
RothwellWikipedia: Alan Smith - 1908
Arturo Frondizi, Argentinian lawyer and politician, 32nd President of Argentina (died 1995)
Paso de los LibresWikipedia: Arturo Frondizi - 1585
Cornelius Jansen, Dutch bishop and theologian (died 1638)
- 1937
Lenny Wilkens, American basketball player and coach (died 2025)
BrooklynWikipedia: Lenny Wilkens - 1667
Maria Anna of Neuburg, Queen consort of Spain
Benrath PalaceWikipedia: Maria Anna of Neuburg - 1854
Jean-Marie Guyau, French philosopher and poet (died 1888)
- 1510
Francis Borgia, 4th Duke of Gandía, Spanish priest and saint, 3rd Superior General of the Society of Jesus (died 1572)
- 1966
Andy Richter, American actor, producer, and screenwriter
Grand RapidsWikipedia: Andy Richter - 1991
Lucy Bronze, English footballer
Berwick-upon-TweedWikipedia: Lucy Bronze - 1998
Nolan Gould, American actor
ColumbusWikipedia: Nolan Gould - 1972
Brad Paisley, American singer-songwriter and guitarist
Glen DaleWikipedia: Brad Paisley - 1897
Edith Head, American costume designer (died 1981)
San BernardinoWikipedia: Edith Head - 1952
Annie Potts, American actress
NashvilleWikipedia: Annie Potts - 1969
Jeremy Davies, American actor
Traverse CityWikipedia: Jeremy Davies - 1984
Finn Wittrock, American actor
- 1969
Ben Harper, American singer-songwriter and guitarist
PomonaWikipedia: Ben Harper - 1980
Agnes Obel, Danish singer-songwriter and pianist
CopenhagenWikipedia: Agnes Obel - 1997
Taylor Fritz, American tennis player
Rancho Santa FeWikipedia: Taylor Fritz - 1962
Daphne Zuniga, American actress
San FranciscoWikipedia: Daphne Zuniga - 1967
John Romero, American video game designer, co-founded Id Software
Colorado SpringsWikipedia: John Romero - 1973
Montel Vontavious Porter, American wrestler and actor
- 1932
Spyros Kyprianou, Cypriot lawyer and politician, 2nd President of Cyprus (died 2002)
LimassolWikipedia: Spyros Kyprianou - 1938
Anne Perry, English author (died 2023)
LondonWikipedia: Anne Perry - 1944
Dennis Franz, American actor
MaywoodWikipedia: Dennis Franz - 1953
Desmond Child, American musician, songwriter, and producer
GainesvilleWikipedia: Desmond Child - 1965
Jami Gertz, American actress
ChicagoWikipedia: Jami Gertz
What is celebrated on 28 October
- Christian feast day: Abdias of Babylon
- Christian feast day: Abgar V of Edessa (Eastern Orthodox Church)
- Christian feast day: Eadsige
- Christian feast day: Faro
- Christian feast day: Fidelis of Como (Roman Catholic Church)
- Christian feast day: Firmilian
- Christian feast day: Godwin of Stavelot
- Christian feast day: Job of Pochayiv (repose) (Eastern Orthodox Church)
- Christian feast day: The Apostles Simon and Jude (Western Christianity)
- Christian feast day: Lord of Miracles (Lima)
- Christian feast day: October 28 (Eastern Orthodox liturgics)
- Day of the Establishment of an Independent Czecho-Slovak State, celebrates the independence of Czechoslovakia from Austria-Hungary in 1918. (Czech Republic and Slovakia)
- International Animation Day (ASIFA)
- Ohi Day (Greece, Cyprus and the Greek communities), a national day in Greece.
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.