A birthday on the globe
28 January on the globe: what happened in the world on this day, and who was born
For 28 January, the English Wikipedia lists 58 events and 215 births. 26 of the events stand at their places as rays of light; 10 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 January through the years
The Earth on 28 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 28 January the Sun passes straight overhead at noon along the parallel of 18.3° south. In London, the day lasts about 8 hours 55 minutes.
Beyond 72° south the Sun no longer sets; beyond 72° 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 · Russian Academy of Sciences
1724
The Russian Academy of Sciences is founded in St. Petersburg, Russia, by Peter the Great, and implemented by Senate decree. It is called the St. Petersburg Academy of Sciences until 1917.
On the map: Russian Academy of Sciences.
Also on the day’s list of Wikipedia in Spanish.
North America · Northwestern University
1851
Northwestern University becomes the first chartered university in Illinois.
On the map: Northwestern University.
North America · Carnegie Institution for Science
1902
The Carnegie Institution of Washington is founded in Washington, D.C., with a $10 million gift from Andrew Carnegie.
On the map: Carnegie Institution for Science.
Also on the day’s list of Wikipedia in Spanish.
28 January
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 · South Shetland Islands
1820
A Russian expedition led by Fabian Gottlieb von Bellingshausen and Mikhail Petrovich Lazarev reaches the Antarctic continent and approaches its coasts, which had previously been sighted by Gabriel de Castilla (1603) and Dirck Gerritsz Pomp (1599), specifically the South Shetland Islands.
On the map: South Shetland Islands.
Translated from the list on Wikipedia in Spanish.
From Wikipedia in Spanish · Paris
1887
In Paris, the foundation stone of the Eiffel Tower is laid.
On the map: Paris.
Translated from the list on Wikipedia in Spanish.
28 January
Born on 28 January#
The English Wikipedia lists 215 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 January
1912
Jackson Pollock, American painter (died 1956)
Place of birth: Cody.
Born on 28 January
1978
Gianluigi Buffon, Italian footballer
Place of birth: Carrara.
Born on 28 January
1853
José Martí, Cuban journalist, poet, and theorist (died 1895)
Place of birth: Havana.
Born on 28 January
1873
Colette, French novelist and journalist (died 1954)
Place of birth: Saint-Sauveur-en-Puisaye.
Born on 28 January
1936
Ismail Kadare, Albanian novelist, poet, essayist, and playwright (died 2024)
Place of birth: Gjirokastër.
Born in Britain and Ireland
1978
Jamie Carragher, English footballer and sportscaster
Place of birth: Bootle.
Born in Britain and Ireland
1993
Will Poulter, English actor
Place of birth: London.
Born in Britain and Ireland
1935
David Lodge, English author and critic (died 2025)
Place of birth: Brockley.
28 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: 28 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 28 January
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.
- 98
On the death of Nerva, Trajan is declared Roman emperor in Cologne, the seat of his government in lower Germany.
Europe · CologneWikipedia: Nerva - 814
The death of Charlemagne, the first Holy Roman Emperor, brings about the accession of his son Louis the Pious as ruler of the Frankish Empire.
no place on the mapWikipedia: Charlemagne - 1069
Robert de Comines, appointed Earl of Northumbria by William the Conqueror, rides into Durham, England, where he is defeated and killed by rebels. This incident leads to the Harrying of the North.
Britain & Ireland · Durham, EnglandWikipedia: Harrying of the North - 1077
Walk to Canossa: The excommunication of Henry IV, Holy Roman Emperor, is lifted after he humbles himself before Pope Gregory VII at Canossa in Italy.
no place on the mapWikipedia: Road to Canossa - 1393
King Charles VI of France is nearly killed when several other dancers' costumes catch fire during a masquerade ball in Paris.
Europe · Îlot de la Reine BlancheWikipedia: Bal des Ardents - 1521
The Diet of Worms begins, lasting until May 25.
Europe · Diet of WormsWikipedia: Diet of Worms - 1547
Edward VI, the nine-year-old son of Henry VIII, becomes King of England on his father's death.
no place on the mapWikipedia: Edward VI - 1568
The Edict of Torda prohibits the persecution of individuals on religious grounds in John Sigismund Zápolya's Eastern Hungarian Kingdom.
no place on the mapWikipedia: Edict of Torda - 1573
Articles of the Warsaw Confederation are signed, sanctioning freedom of religion in Poland.
no place on the mapWikipedia: Warsaw Confederation - 1591
Execution of Agnes Sampson, accused of witchcraft in Edinburgh.
no place on the mapWikipedia: Agnes Sampson - 1624
Sir Thomas Warner founds the first British colony in the Caribbean, on the island of Saint Kitts.
Latin America · Saint KittsWikipedia: Thomas Warner - 1671
Original city of Panama (founded in 1519) is destroyed by a fire when privateer Henry Morgan sacks and sets fire to it. The site of the previously devastated city is still in ruins (see Panama Viejo).
Latin America · Panamá ViejoWikipedia: Henry Morgan's Panama expedition - 1724
The Russian Academy of Sciences is founded in St. Petersburg, Russia, by Peter the Great, and implemented by Senate decree. It is called the St. Petersburg Academy of Sciences until 1917.
Europe · Russian Academy of SciencesWikipedia: Russian Academy of Sciences - 1754
Sir Horace Walpole coins the word serendipity in a letter to a friend.
no place on the mapWikipedia: Horace Walpole - 1813
Jane Austen's Pride and Prejudice is first published in the United Kingdom.
Britain & Ireland · United KingdomWikipedia: Jane Austen - 1846
The Battle of Aliwal, India, is won by British troops commanded by Sir Harry Smith.
Asia · Battle of AliwalWikipedia: Battle of Aliwal - 1851
Northwestern University becomes the first chartered university in Illinois.
North America · Northwestern UniversityWikipedia: Northwestern University - 1855
A locomotive on the Panama Canal Railway runs from the Atlantic Ocean to the Pacific Ocean for the first time.
no place on the mapWikipedia: Panama Canal Railway - 1871
Franco-Prussian War: The Siege of Paris ends in French defeat and an armistice.
Europe · Siege of ParisWikipedia: Franco-Prussian War - 1878
Yale Daily News becomes the first independent daily college newspaper in the United States.
North America · United StatesWikipedia: Yale Daily News - 1896
Walter Arnold of East Peckham, Kent, becomes the first person to be convicted of speeding. He was fined one shilling, plus costs, for speeding at 8 mph (13 km/h), thereby exceeding the contemporary speed limit of 2 mph (3.2 km/h).
Britain & Ireland · East PeckhamWikipedia: East Peckham - 1902
The Carnegie Institution of Washington is founded in Washington, D.C., with a $10 million gift from Andrew Carnegie.
North America · Carnegie Institution for ScienceWikipedia: Carnegie Institution for Science - 1908
Members of the Portuguese Republican Party fail in their attempted coup d'état against the administrative dictatorship of Prime Minister João Franco.
no place on the mapWikipedia: Portuguese Republican Party - 1909
United States troops leave Cuba, with the exception of Guantanamo Bay Naval Base, after being there since the Spanish–American War.
no place on the mapWikipedia: Spanish–American War - 1915
An act of the U.S. Congress creates the United States Coast Guard as a branch of the United States Armed Forces.
North America · United States CongressWikipedia: United States Congress - 1916
The Canadian province of Manitoba grants women the right to vote and run for office in provincial elections (although still excluding women of Indigenous or Asian heritage), marking the first time women in Canada are granted voting rights.
North America · ManitobaWikipedia: Manitoba - 1918
Finnish Civil War: The Red Guard rebels seize control of the capital, Helsinki; members of the Senate of Finland go underground.
Europe · HelsinkiWikipedia: Finnish Civil War - 1919
The Order of the White Rose of Finland is established by Baron Gustaf Mannerheim, the regent of Finland.
Europe · Kingdom of FinlandWikipedia: Order of the White Rose of Finland - 1920
Foundation of the Spanish Legion.
no place on the mapWikipedia: Spanish Legion - 1922
Knickerbocker Storm: Washington, D.C.'s biggest snowfall, causes a disaster when the roof of the Knickerbocker Theatre collapses, killing over 100 people.
North America · Knickerbocker TheatreWikipedia: Knickerbocker storm - 1932
Japanese forces attack Shanghai.
Asia · January 28 incidentWikipedia: January 28 incident - 1933
The name Pakistan is coined by Choudhry Rahmat Ali Khan and is accepted by Indian Muslims who then thereby adopted it further for the Pakistan Movement seeking independence.
Asia · PakistanWikipedia: Pakistan - 1935
Iceland becomes the first Western country to legalize therapeutic abortion.
Europe · IcelandWikipedia: Iceland - 1938
The World Land Speed Record on a public road is broken by Rudolf Caracciola in the Mercedes-Benz W125 Rekordwagen at a speed of 432.7 kilometres per hour (268.9 mph).
no place on the mapWikipedia: List of land speed records - 1941
Franco-Thai War: Final air battle of the conflict. A Japanese-mediated armistice goes into effect later in the day.
no place on the mapWikipedia: Franco-Thai War - 1945
World War II: Supplies begin to reach the Republic of China over the newly reopened Burma Road.
Asia · Republic of ChinaWikipedia: World War II - 1956
Elvis Presley makes his first national television appearance.
no place on the mapWikipedia: Elvis Presley - 1958
The Lego company patents the design of its Lego bricks, still compatible with bricks produced today.
no place on the mapWikipedia: Lego - 1960
The National Football League announces expansion teams for Dallas to start in the 1960 NFL season and Minneapolis-St. Paul for the 1961 NFL season.
no place on the mapWikipedia: National Football League - 1961
In Gitarama, Rwanda, local and other government officials initiated a coup to overthrow the monarchy and establish a republic.
Africa · MuhangaWikipedia: Coup of Gitarama - 1964
An unarmed United States Air Force T-39 Sabreliner on a training mission is shot down over Erfurt, East Germany, by a Soviet MiG-19.
Europe · 1964 T-39 shootdown incidentWikipedia: 1964 T-39 shootdown incident - 1965
The current design of the Flag of Canada is chosen by an act of Parliament.
no place on the mapWikipedia: Flag of Canada - 1977
The Shining, the horror novel and the first hardcover bestseller by Stephen King, is published.
no place on the mapWikipedia: The Shining - 1977
The first day of the Great Lakes Blizzard of 1977, which dumps 3 metres (10 ft) of snow in one day in Upstate New York. Buffalo, Syracuse, Watertown, and surrounding areas are most affected.
North America · Buffalo, New YorkWikipedia: Blizzard of 1977 - 1980
USCGC Blackthorn collides with the tanker Capricorn while leaving Tampa, Florida and capsizes, killing 23 Coast Guard crewmembers.
North America · Tampa, FloridaWikipedia: USCGC Blackthorn - 1981
Ronald Reagan lifts remaining domestic petroleum price and allocation controls in the United States, helping to end the 1979 energy crisis and begin the 1980s oil glut.
no place on the mapWikipedia: 1979 oil crisis - 1982
US Army General James L. Dozier is rescued by Italian anti-terrorism forces from captivity by the Red Brigades.
no place on the mapWikipedia: United States Army - 1984
Tropical Storm Domoina makes landfall in southern Mozambique, eventually causing 214 deaths and some of the most severe flooding so far recorded in the region.
Africa · MozambiqueWikipedia: Tropical Storm Domoina - 1985
Supergroup USA for Africa (United Support of Artists for Africa) records the hit single We Are the World, to help raise funds for Ethiopian famine relief.
Africa · EthiopiaWikipedia: We Are the World - 1986
Space Shuttle program: STS-51-L mission: Space Shuttle Challenger disintegrates after liftoff, killing all seven astronauts on board.
North America · Space Shuttle Challenger disasterWikipedia: Space Shuttle Challenger disaster - 1988
In R v Morgentaler the Supreme Court of Canada strikes down all anti-abortion laws.
no place on the mapWikipedia: Abortion law - 2002
TAME Flight 120, a Boeing 727-100, crashes in the Andes mountains in southern Colombia, killing 94.
Latin America · TAME Flight 120Wikipedia: TAME Flight 120 - 2006
The roof of one of the buildings at the Katowice International Fair in Poland collapses due to the weight of snow, killing 65 and injuring more than 170 others.
Europe · Katowice Trade Hall roof collapseWikipedia: Katowice Trade Hall roof collapse - 2021
A nitrogen leak at a poultry food processing facility in Gainesville, Georgia kills six and injures at least ten.
North America · 2021 Georgia poultry plant accidentWikipedia: 2021 Georgia poultry plant accident - 2023
Protests begin in the United States after police beat and kill Tyre Nichols.
North America · Killing of Tyre NicholsWikipedia: Killing of Tyre Nichols - 2026
A Learjet 45 crashes on approach to Baramati Airport in Maharashtra, killing all six occupants including the Deputy Chief Minister of Maharashtra, Ajit Pawar.
Asia · BaramatiWikipedia: 2026 Baramati Learjet 45 crash - 2026
Storm Kristin causes a catastrophic impact in Portugal and Spain with €6 billion in damage in the central region of Portugal, 15 deaths and 2,000 injuries.
no place on the mapWikipedia: Storm Kristin - 2026
The Rubaya mine collapse at Rubaya mines in DR Congo causes at least 400 deaths and injured several others.
Africa · 2026 Rubaya mines collapsesWikipedia: 2026 Rubaya mines collapses
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.
- 1820
A Russian expedition led by Fabian Gottlieb von Bellingshausen and Mikhail Petrovich Lazarev reaches the Antarctic continent and approaches its coasts, which had previously been sighted by Gabriel de Castilla (1603) and Dirck Gerritsz Pomp (1599), specifically the South Shetland Islands.
Oceans · South Shetland IslandsTranslated from the list on Wikipedia in SpanishWikipedia: Islas Shetland del Sur - 1887
In Paris, the foundation stone of the Eiffel Tower is laid.
Who was born on 28 January
In order of how many Wikipedia editions have an article about each. The first 60 of 215 are shown.
- 1955
Nicolas Sarkozy, French lawyer and politician, 23rd President of France
- 1912
Jackson Pollock, American painter (died 1956)
- 1978
Gianluigi Buffon, Italian footballer
CarraraWikipedia: Gianluigi Buffon - 1853
José Martí, Cuban journalist, poet, and theorist (died 1895)
HavanaWikipedia: José Martí - 1873
Colette, French novelist and journalist (died 1954)
Saint-Sauveur-en-PuisayeWikipedia: Colette - 1936
Ismail Kadare, Albanian novelist, poet, essayist, and playwright (died 2024)
GjirokastërWikipedia: Ismail Kadare - 1981
Elijah Wood, American actor and producer
Cedar RapidsWikipedia: Elijah Wood - 1457
Henry VII, king of England (died 1509)
Pembroke CastleWikipedia: Henry VII of England - 1600
Clement IX, pope of the Catholic Church (died 1669)
PistoiaWikipedia: Pope Clement IX - 1940
Carlos Slim, Mexican businessman and philanthropist, founded Grupo Carso
Mexico CityWikipedia: Carlos Slim - 1950
Hamad bin Isa Al Khalifa, Bahraini king
- 1887
Arthur Rubinstein, Polish-American pianist and educator (died 1982)
- 1717
Mustafa III, Ottoman sultan (died 1774)
Edirne PalaceWikipedia: Mustafa III - 1936
Alan Alda, American actor, director, and writer
ManhattanWikipedia: Alan Alda - 1978
Jamie Carragher, English footballer and sportscaster
- 1611
Johannes Hevelius, Polish astronomer and politician (died 1687)
- 1853
Vladimir Solovyov, Russian philosopher, poet, and critic (died 1900)
- 1980
Yasuhito Endō, Japanese footballer
SakurajimaWikipedia: Yasuhito Endō - 1938
Tomas Lindahl, Swedish-English biologist and academic, Nobel Prize laureate
StockholmWikipedia: Tomas Lindahl - 2000
Dušan Vlahović, Serbian footballer
BelgradeWikipedia: Dušan Vlahović - 1784
George Hamilton-Gordon, 4th Earl of Aberdeen, Scottish politician, Prime Minister of the United Kingdom (died 1860)
- 1922
Robert W. Holley, American biochemist and academic, Nobel Prize laureate (died 1993)
- 1993
Will Poulter, English actor
LondonWikipedia: Will Poulter - 598
Taizong, emperor of the Tang dynasty (died 649)
Wugong CountyWikipedia: Emperor Taizong of Tang - 1865
Kaarlo Juho Ståhlberg, Finnish lawyer, judge, and politician, 1st President of Finland (died 1952)
SuomussalmiWikipedia: Kaarlo Juho Ståhlberg - 1948
Charles Taylor, Liberian politician, 22nd President of Liberia
ArthingtonWikipedia: Charles Taylor - 1972
Amy Coney Barrett, American jurist, academic, attorney, and Associate Justice of the Supreme Court of the United States
New OrleansWikipedia: Amy Coney Barrett - 1985
J. Cole, American rapper
FrankfurtWikipedia: J. Cole - 1994
Maluma, Colombian singer-songwriter, rapper, and actor
MedellínWikipedia: Maluma - 1959
Frank Darabont, American director and producer
MontbéliardWikipedia: Frank Darabont - 1833
Charles George Gordon, English general and politician (died 1885)
WoolwichWikipedia: Charles George Gordon - 1977
Takuma Sato, Japanese race car driver
ShinjukuWikipedia: Takuma Sato - 1980
Nick Carter, American singer-songwriter and actor
JamestownWikipedia: Nick Carter - 1935
David Lodge, English author and critic (died 2025)
BrockleyWikipedia: David Lodge - 1976
Rick Ross, American rapper and producer
ClarksdaleWikipedia: Rick Ross - 1540
Ludolph van Ceulen, German-Dutch mathematician and academic (died 1610)
HildesheimWikipedia: Ludolph van Ceulen - 1822
Alexander Mackenzie, Scottish-Canadian politician, 2nd Prime Minister of Canada (died 1892)
LogieraitWikipedia: Alexander Mackenzie - 1884
Auguste Piccard, Swiss physicist and explorer (died 1962)
- 1929
Claes Oldenburg, Swedish-American sculptor and illustrator (died 2022)
StockholmWikipedia: Claes Oldenburg - 1998
Ariel Winter, American actress
FairfaxWikipedia: Ariel Winter - 1968
Sarah McLachlan, Canadian singer-songwriter, pianist, and producer
HalifaxWikipedia: Sarah McLachlan - 1312
Joan II, queen of Navarre (died 1349)
Conflans-Sainte-HonorineWikipedia: Joan II of Navarre - 1608
Giovanni Alfonso Borelli, Italian physiologist and physicist (died 1679)
- 1984
Andre Iguodala, American basketball player
SpringfieldWikipedia: Andre Iguodala - 1897
Valentin Kataev, Russian author and playwright (died 1986)
- 1978
Papa Bouba Diop, Senegalese footballer (died 2020)
RufisqueWikipedia: Papa Bouba Diop - 1978
Sheamus, Irish wrestler
DublinWikipedia: Sheamus - 1986
Jessica Ennis-Hill, English heptathlete and hurdler
SheffieldWikipedia: Jessica Ennis-Hill - 1701
Charles Marie de La Condamine, French mathematician and geographer (died 1774)
- 1865
Lala Lajpat Rai, Indian author and politician (died 1928)
DhudikeWikipedia: Lala Lajpat Rai - 1903
Kathleen Lonsdale, Irish crystallographer and 1st female FRS (died 1971)
NewbridgeWikipedia: Kathleen Lonsdale - 1947
Jeanne Shaheen, American educator and politician, 78th Governor of New Hampshire
St. CharlesWikipedia: Jeanne Shaheen - 1989
Siem de Jong, Dutch footballer
- 1949
Gregg Popovich, American basketball player and coach
East ChicagoWikipedia: Gregg Popovich - 1969
Kathryn Morris, American actress
CincinnatiWikipedia: Kathryn Morris - 1944
John Tavener, English composer (died 2013)
LondonWikipedia: John Tavener - 1951
Leonid Kadeniuk, Ukrainian general, pilot, and astronaut (died 2018)
KlishkivtsiWikipedia: Leonid Kadenyuk - 1968
Rakim, American rapper
New York CityWikipedia: Rakim - 1906
Markos Vafeiadis, Greek general and politician (died 1992)
- 1954
Rick Warren, American pastor and author
San JoseWikipedia: Rick Warren
What is celebrated on 28 January
- Christian feast day: Joseph Freinademetz
- Christian feast day: Julian of Cuenca
- Christian feast day: Thomas Aquinas
- Christian feast day: January 28 (Eastern Orthodox liturgics)
- Army Day (Armenia)
- Data Privacy Day
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.