A birthday on the globe
27 August on the globe: what happened in the world on this day, and who was born
For 27 August, the English Wikipedia lists 60 events and 271 births. 38 of the events stand at their places as rays of light; four 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 27 August through the years
The Earth on 27 August
The picture on the globe was assembled by NASA from satellite photographs taken in August 2004: the snow, the ice and the green are those of the month.
On 27 August the Sun passes straight overhead at noon along the parallel of 10.0° north. In London, the day lasts about 13 hours 55 minutes.
Beyond 80° north the Sun no longer sets; beyond 80° south 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 · Calder Hall nuclear power station
1956
The nuclear power station at Calder Hall in the United Kingdom was connected to the national power grid becoming the world's first commercial nuclear power station to generate electricity on an industrial scale.
On the map: Calder Hall nuclear power station.
Africa · Butre
1656
The Netherlands and the Ahanta people signed the Treaty of Butre, creating a Dutch protectorate over the country of Upper Ahanta in modern-day Ghana.
On the map: Butre.
Africa · Bloemfontein
1933
The first Afrikaans Bible is introduced during a Bible Festival in Bloemfontein.
On the map: Bloemfontein.
Also on the day’s list of Wikipedia in Spanish.
Asia · Nerchinsk
1689
The Treaty of Nerchinsk is signed by Russia and the Qing Empire (Julian calendar).
On the map: Nerchinsk.
Latin America · Preliminary Peace Convention
1828
Brazil and Argentina recognize the sovereignty of Uruguay in the Treaty of Montevideo.
On the map: the coordinates Wikidata gives for the article “Preliminary Peace Convention”.
Also on the day’s list of Wikipedia in Spanish.
North America · Titusville, Pennsylvania
1859
Petroleum is discovered in Titusville, Pennsylvania, leading to the world's first commercially successful oil well.
On the map: Titusville, Pennsylvania.
Also on the day’s list of Wikipedia in Spanish.
27 August
Born on 27 August#
The English Wikipedia lists 271 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 27 August
1770
Georg Wilhelm Friedrich Hegel, German philosopher and academic (died 1831)
Place of birth: Stuttgart.
Born on 27 August
1856
Ivan Franko, Ukrainian author and poet (died 1916)
Place of birth: Nahuievychi.
Born on 27 August
1871
Theodore Dreiser, American novelist and journalist (died 1945)
Place of birth: Terre Haute.
Born on 27 August
1941
Cesária Évora, Cape Verdean singer (died 2011)
Place of birth: Mindelo.
Born on 27 August
1874
Carl Bosch, German chemist and engineer, Nobel Prize laureate (died 1940)
Place of birth: Cologne.
Born in Britain and Ireland
1959
Jeanette Winterson, English journalist and novelist
Place of birth: Manchester.
Born in Britain and Ireland
1877
Charles Rolls, English engineer and businessman, co-founded Rolls-Royce Limited (died 1910)
Place of birth: Berkeley Square.
Born in Britain and Ireland
1925
Nat Lofthouse, English footballer and manager (died 2011)
Place of birth: Bolton.
27 August
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: 27 August 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 27 August
The list is the English Wikipedia’s, in its own wording, as it stood in October 2026. 18 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.
- 410
The sacking of Rome by the Visigoths ends after three days.
Europe · Sack of RomeWikipedia: Sack of Rome - 1172
Henry the Young King and Margaret of France are crowned junior king and queen of England.
no place on the mapWikipedia: Henry the Young King - 1232
Shikken Hojo Yasutoki of the Kamakura shogunate promulgates the Goseibai Shikimoku, the first Japanese legal code governing the samurai class.
Asia · Kamakura shogunateWikipedia: Shikken - 1353
War of the Straits and Sardinian–Aragonese war: The Battle of Alghero results in a crushing victory of the allied Aragonese and Venetian fleet over the Genoese fleet, most of which is captured.
Europe · Battle of AlgheroWikipedia: Battle of Alghero - 1557
The Battle of St. Quentin results in Emmanuel Philibert becoming Duke of Savoy.
Europe · Battle of St. QuentinWikipedia: Battle of St. Quentin - 1593
Pierre Barrière fails in an attempt to assassinate Henry IV of France.
no place on the mapWikipedia: Pierre Barrière - 1597
Jeongyu War: Battle of Chilcheollyang: A Japanese fleet of 500 ships destroys Joseon commander Wŏn Kyun's fleet of 200 ships at Chilcheollyang.
Asia · Battle of ChilcheollyangWikipedia: Battle of Chilcheollyang - 1600
Ishida Mitsunari's Western Army commences the Siege of Fushimi Castle, which is lightly defended by a much smaller Tokugawa garrison led by Torii Mototada.
Asia · Siege of Fushimi CastleWikipedia: Siege of Fushimi Castle - 1656
The Netherlands and the Ahanta people signed the Treaty of Butre, creating a Dutch protectorate over the country of Upper Ahanta in modern-day Ghana.
Africa · ButreWikipedia: Treaty of Butre - 1689
The Treaty of Nerchinsk is signed by Russia and the Qing Empire (Julian calendar).
Asia · NerchinskWikipedia: Treaty of Nerchinsk - 1776
American Revolutionary War: British forces under General William Howe flank and defeat the Continental Army under General George Washington during the Battle of Long Island, with the 1st Maryland Regiment sustaining heavy casualties to cover retreating American troops.
North America · Battle of Long IslandWikipedia: Battle of Long Island - 1791
French Revolution: Frederick William II of Prussia and Leopold II, Holy Roman Emperor, issue the Declaration of Pillnitz, declaring the joint support of the Holy Roman Empire and Prussia for the French monarchy, agitating the French revolutionaries and contributing to the outbreak of the War of the First Coalition.
no place on the mapWikipedia: French Revolution - 1793
French Revolutionary Wars: The city of Toulon revolts against the French Republic and admits the British and Spanish fleets to seize its port, leading to the Siege of Toulon by French Revolutionary forces.
Europe · ToulonWikipedia: French Revolutionary Wars - 1798
Wolfe Tone's United Irish and French forces clash with the British Army in the Battle of Castlebar, part of the Irish Rebellion of 1798, resulting in the creation of the French puppet Republic of Connacht.
Britain & Ireland · Battle of CastlebarWikipedia: Battle of Castlebar - 1810
Napoleonic Wars: The French Navy defeats the British Royal Navy, preventing them from taking the harbour of Grand Port on Île de France.
Oceans · Battle of Grand PortWikipedia: Napoleonic Wars - 1813
French Emperor Napoleon I defeats a larger force of Austrians, Russians, and Prussians at the Battle of Dresden.
Europe · Battle of DresdenWikipedia: Battle of Dresden - 1828
Brazil and Argentina recognize the sovereignty of Uruguay in the Treaty of Montevideo.
Latin America · Preliminary Peace ConventionWikipedia: Preliminary Peace Convention - 1832
Black Hawk, leader of the Sauk tribe of Native Americans, surrenders to U.S. authorities, ending the Black Hawk War.
North America · Michigan TerritoryWikipedia: Black Hawk War - 1859
Petroleum is discovered in Titusville, Pennsylvania, leading to the world's first commercially successful oil well.
North America · Titusville, PennsylvaniaWikipedia: Petroleum - 1881
The Georgia hurricane makes landfall near Savannah, Georgia, resulting in an estimated 700 deaths.
North America · Savannah, GeorgiaWikipedia: 1881 Atlantic hurricane season - 1883
Eruption of Krakatoa: Four enormous explosions almost completely destroy the island of Krakatoa, with a combination of tsunamis and pyroclastic flows killing more than 36,000. Climate effects are observed worldwide.
Asia · 1883 eruption of KrakatoaWikipedia: 1883 eruption of Krakatoa - 1893
The Sea Islands hurricane strikes the United States near Savannah, Georgia, killing between 1,000 and 2,000 people.
North America · Savannah, GeorgiaWikipedia: 1893 Sea Islands hurricane - 1895
Japanese invasion of Taiwan: Battle of Baguashan: The Empire of Japan decisively defeats a smaller Formosan army at Changhua, crippling the short-lived Republic of Formosa and leading to its surrender two months later.
Asia · BaguashanWikipedia: 1895 Japanese invasion of Taiwan - 1896
Anglo-Zanzibar War: The shortest war in world history (09:02 to 09:40) occurs, between the United Kingdom and Zanzibar.
Africa · Anglo-Zanzibar WarWikipedia: Anglo-Zanzibar War - 1908
The Qing dynasty promulgates the Qinding Xianfa Dagang, the first constitutional document in the history of China, transforming the Qing empire into a constitutional monarchy.
Asia · Qing dynastyWikipedia: Qing dynasty - 1914
World War I: Battle of Étreux: A British rearguard action by the Royal Munster Fusiliers during the Great Retreat.
Europe · Rearguard Affair of ÉtreuxWikipedia: World War I - 1914
World War I: Siege of Tsingtao: A Japanese fleet commanded by Vice Admiral Sadakichi Kato imposes a blockade along the whole coastline of German Tsingtao, initiating the Siege of Tsingtao.
Asia · Siege of TsingtaoWikipedia: Siege of Tsingtao - 1915
Attempted assassination of Bishop Patrick Heffron, bishop of the Diocese of Winona, by Rev. Louis M. Lesches.
North America · Diocese of Winona–RochesterWikipedia: Assassination - 1916
World War I: The Kingdom of Romania declares war on Austria-Hungary, entering the war as one of the Allied nations.
no place on the mapWikipedia: Kingdom of Romania - 1918
Mexican Revolution: Battle of Ambos Nogales: U.S. Army forces skirmish against Mexican Carrancistas as part of the Mexican Border War.
North America · Battle of Ambos NogalesWikipedia: Battle of Ambos Nogales - 1922
Greco-Turkish War: The Turkish army takes the Aegean city of Afyonkarahisar from the Kingdom of Greece.
Asia · AfyonkarahisarWikipedia: Greco-Turkish War - 1927
Five Canadian women file a petition to the Supreme Court of Canada, asking: "Does the word 'Persons' in Section 24 of the British North America Act, 1867, include female persons?"
no place on the mapWikipedia: The Famous Five - 1928
The Kellogg–Briand Pact outlawing war is signed by fifteen nations. Ultimately sixty-one nations will sign it.
Europe · ParisWikipedia: Kellogg–Briand Pact - 1933
The first Afrikaans Bible is introduced during a Bible Festival in Bloemfontein.
Africa · BloemfonteinWikipedia: Bible translations into Afrikaans - 1939
First flight of the turbojet-powered Heinkel He 178, the world's first jet aircraft.
no place on the mapWikipedia: Turbojet - 1942
The Holocaust: first day of the Sarny Massacre, perpetrated by German military forces.
Europe · SarnyWikipedia: Sarny massacre - 1943
World War II: Aerial bombardment by the Luftwaffe razes to the ground the village of Vorizia in Crete.
Europe · Razing of VoriziaWikipedia: Razing of Vorizia - 1943
World War II: Japanese forces evacuate New Georgia Island in the Pacific Theater of Operations during World War II.
Oceania · New GeorgiaWikipedia: World War II - 1955
The first edition of the Guinness Book of Records is published in Great Britain.
no place on the mapWikipedia: Guinness World Records - 1956
The nuclear power station at Calder Hall in the United Kingdom was connected to the national power grid becoming the world's first commercial nuclear power station to generate electricity on an industrial scale.
Britain & Ireland · Calder Hall nuclear power stationWikipedia: Calder Hall nuclear power station - 1962
The Mariner 2 unmanned space mission is launched to Venus by NASA.
no place on the mapWikipedia: Mariner 2 - 1963
An explosion at the Cane Creek potash mine near Moab, Utah kills 18 miners.
North America · Moab, UtahWikipedia: Intrepid Potash - 1964
South Vietnamese junta leader Nguyễn Khánh enters into a triumvirate power-sharing arrangement with rival generals Trần Thiện Khiêm and Dương Văn Minh, who had both been involved in plots to unseat Khánh.
no place on the mapWikipedia: Army of the Republic of Vietnam - 1971
An attempted coup d'état fails in the African nation of Chad. The Government of Chad accuses Egypt of playing a role in the attempt and breaks off diplomatic relations.
no place on the mapWikipedia: Coup d'état - 1975
The Governor of Portuguese Timor abandons its capital, Dili, and flees to Atauro Island, leaving control to a rebel group.
Asia · DiliWikipedia: Portuguese Timor - 1979
The Troubles: Eighteen British soldiers are killed at the Warrenpoint ambush by the Provisional Irish Republican Army near Warrenpoint, Northern Ireland, in the deadliest attack on British forces during Operation Banner. An IRA bomb also kills British royal family member Lord Mountbatten and three others on his boat at Mullaghmore, Republic of Ireland.
Britain & Ireland · Warrenpoint ambushWikipedia: The Troubles - 1980
South Korean presidential election: After successfully staging the Coup d'état of May Seventeenth, General Chun Doo-hwan, running unopposed, has the National Conference for Unification elect him President of the Fourth Republic of Korea.
no place on the mapWikipedia: 1980 South Korean presidential election - 1982
Turkish military diplomat Colonel Atilla Altıkat is shot and killed in Ottawa. Justice Commandos of the Armenian Genocide claim to be avenging the massacre of 1+1⁄2 million Armenians in the 1915 Armenian genocide.
North America · OttawaWikipedia: Armenian genocide - 1985
Major General Muhammadu Buhari, Chairman of the Supreme Military Council of Nigeria, is ousted from power in a coup d'état led by Major General Ibrahim Babangida.
no place on the mapWikipedia: 1985 Nigerian coup d'état - 1985
Space Shuttle Discovery is launched on STS-51-I to deploy three communication satellites and repair a fourth malfunctioning one.
no place on the mapWikipedia: Space Shuttle Discovery - 1990
American musician Stevie Ray Vaughan, one of the most influential guitarists in the revival of blues in the 1980s, was killed in a helicopter crash.
North America · Death of Stevie Ray VaughanWikipedia: Death of Stevie Ray Vaughan - 1991
Moldova declares independence from the USSR.
no place on the mapWikipedia: Moldova - 1991
The European Community recognizes the independence of the Baltic states of Estonia, Latvia and Lithuania.
no place on the mapWikipedia: European Economic Community - 1992
Aeroflot Flight 2808 crashes in Lebyazhy Lug during approach to Ivanovo Yuzhny Airport, killing all 84 aboard.
Europe · Aeroflot Flight 2808Wikipedia: Aeroflot Flight 2808 - 2003
Mars makes its closest approach to Earth in nearly 60,000 years, passing 34,646,418 miles (55,758,005 km) distant.
no place on the mapWikipedia: Mars - 2003
The first six-party talks, involving South and North Korea, the United States, China, Japan and Russia, convene to find a peaceful resolution to the security concerns of the North Korean nuclear weapons program.
no place on the mapWikipedia: Six-party talks - 2006
Comair Flight 5191 crashes on takeoff from Blue Grass Airport in Lexington, Kentucky, bound for Hartsfield–Jackson Atlanta International Airport in Atlanta. Of the passengers and crew, 49 of 50 are confirmed dead in the hours following the crash.
North America · Comair Flight 5191Wikipedia: Comair Flight 5191 - 2009
Internal conflict in Myanmar: The Burmese military junta and ethnic armies begin three days of violent clashes in the Kokang Special Region.
Asia · 2009 Kokang incidentWikipedia: 2009 Kokang incident - 2011
Hurricane Irene strikes the United States east coast, killing 47 and causing an estimated $15.6 billion in damage.
no place on the mapWikipedia: Hurricane Irene - 2013
Religious violence between Hindus and Muslims erupted in Muzaffarnagar district, Uttar Pradesh, India, leaving 62 people dead.
Asia · 2013 Muzaffarnagar riotsWikipedia: 2013 Muzaffarnagar riots
Who was born on 27 August
In order of how many Wikipedia editions have an article about each. The first 60 of 271 are shown.
- 1770
Georg Wilhelm Friedrich Hegel, German philosopher and academic (died 1831)
- 1908
Lyndon B. Johnson, American commander and politician, 36th President of the United States (died 1973)
StonewallWikipedia: Lyndon B. Johnson - 1986
Sebastian Kurz, Austrian politician, 25th Chancellor of Austria
- 1856
Ivan Franko, Ukrainian author and poet (died 1916)
NahuievychiWikipedia: Ivan Franko - 1871
Theodore Dreiser, American novelist and journalist (died 1945)
Terre HauteWikipedia: Theodore Dreiser - 1865
Charles G. Dawes, American general and politician, 30th Vice President of the United States, Nobel Prize laureate (died 1951)
MariettaWikipedia: Charles G. Dawes - 1941
Cesária Évora, Cape Verdean singer (died 2011)
MindeloWikipedia: Cesária Évora - 1874
Carl Bosch, German chemist and engineer, Nobel Prize laureate (died 1940)
CologneWikipedia: Carl Bosch - 1977
Deco, Brazilian-Portuguese footballer
São Bernardo do CampoWikipedia: Deco - 1890
Man Ray, American-French photographer and painter (died 1976)
PhiladelphiaWikipedia: Man Ray - 1915
Norman Foster Ramsey Jr., American physicist and academic, Nobel Prize laureate (died 2011)
Washington, D.C.Wikipedia: Norman Ramsey Jr. - 1858
Giuseppe Peano, Italian mathematician and philosopher (died 1932)
SpinettaWikipedia: Giuseppe Peano - 1976
Mark Webber, Australian race car driver
QueanbeyanWikipedia: Mark Webber - 1884
Vincent Auriol, French lawyer and politician, President of the French Republic (died 1966)
- 1952
Paul Reubens, American actor and comedian (died 2023)
PeekskillWikipedia: Paul Reubens - 1984
Sulley Muntari, Ghanaian footballer
KonongoWikipedia: Sulley Muntari - 1809
Hannibal Hamlin, American publisher and politician, 15th Vice President of the United States (died 1891)
- 1878
Pyotr Nikolayevich Wrangel, Russian general (died 1928)
ZarasaiWikipedia: Pyotr Wrangel - 1931
Sri Chinmoy, Indian-American guru and poet (died 2007)
Chattogram DistrictWikipedia: Sri Chinmoy - 1979
Aaron Paul, American actor and producer
EmmettWikipedia: Aaron Paul - 1908
Don Bradman, Australian cricketer and manager (died 2001)
CootamundraWikipedia: Don Bradman - 1976
Carlos Moyá, Spanish-Swiss tennis player
- 1990
Luuk de Jong, Dutch footballer
- 1950
Charles Fleischer, American comedian and actor
Washington, D.C.Wikipedia: Charles Fleischer - 1966
René Higuita, Colombian footballer
MedellínWikipedia: René Higuita - 1972
The Great Khali, Indian professional wrestler
DhirainaWikipedia: The Great Khali - 1965
Ange Postecoglou, Greek-Australian footballer and coach
- 1997
Lucas Paquetá, Brazilian footballer
Rio de JaneiroWikipedia: Lucas Paquetá - 1624
Koxinga, Chinese-Japanese Ming loyalist (died 1662)
HiradoWikipedia: Koxinga - 1906
Ed Gein, American murderer and body snatcher, The Butcher of Plainfield (died 1982)
La CrosseWikipedia: Ed Gein - 1985
Nikica Jelavić, Croatian footballer
ČapljinaWikipedia: Nikica Jelavić - 1730
Johann Georg Hamann, German philosopher and author (died 1788)
KönigsbergWikipedia: Johann Georg Hamann - 1959
Jeanette Winterson, English journalist and novelist
ManchesterWikipedia: Jeanette Winterson - 1929
Ira Levin, American novelist, playwright, and songwriter (died 2007)
The BronxWikipedia: Ira Levin - 1947
Barbara Bach, American actress and model
New York CityWikipedia: Barbara Bach - 1959
Gerhard Berger, Austrian race car driver
- 1976
Sarah Chalke, Canadian actress
VancouverWikipedia: Sarah Chalke - 1981
Maxwell Cabelino Andrade, Brazilian footballer
Cachoeiro de ItapemirimWikipedia: Maxwell - 1877
Charles Rolls, English engineer and businessman, co-founded Rolls-Royce Limited (died 1910)
Berkeley SquareWikipedia: Charles Rolls - 1961
Tom Ford, American fashion designer and film director
AustinWikipedia: Tom Ford - 1545
Alexander Farnese, Duke of Parma (died 1592)
- 1953
Peter Stormare, Swedish actor, director, and playwright
- 1896
Kenji Miyazawa, Japanese author and poet (died 1933)
HanamakikawaguchiWikipedia: Kenji Miyazawa - 1973
Dietmar Hamann, German footballer and manager
WaldsassenWikipedia: Dietmar Hamann - 1865
James Henry Breasted, American archaeologist and historian (died 1935)
RockfordWikipedia: James Henry Breasted - 1958
Sergei Krikalev, Russian engineer and astronaut
Saint PetersburgWikipedia: Sergei Krikalev - 1988
Alexa PenaVega, American actress and singer
- 1958
Kathy Hochul, first female Governor of New York
BuffaloWikipedia: Kathy Hochul - 1969
Chandra Wilson, American actress and director
HoustonWikipedia: Chandra Wilson - 1998
Matheus Nunes, Portuguese footballer
Rio de JaneiroWikipedia: Matheus Nunes - 1909
Lester Young, American saxophonist and clarinet player (died 1959)
WoodvilleWikipedia: Lester Young - 1966
Juhan Parts, Estonian lawyer and politician, 14th Prime Minister of Estonia
TallinnWikipedia: Juhan Parts - 1995
Sergey Sirotkin, Russian race car driver
- 1926
Kristen Nygaard, Norwegian computer scientist and academic (died 2002)
- 1969
Avril Haines, American lawyer, and 1st female Director of National Intelligence
ManhattanWikipedia: Avril Haines - 1981
Patrick J. Adams, Canadian actor
TorontoWikipedia: Patrick J. Adams - 1992
Kim Petras, German singer-songwriter
- 1925
Nat Lofthouse, English footballer and manager (died 2011)
BoltonWikipedia: Nat Lofthouse - 1943
Tuesday Weld, American model and actress
New York CityWikipedia: Tuesday Weld - 1984
David Bentley, English footballer
PeterboroughWikipedia: David Bentley
What is celebrated on 27 August
- Christian feast day: Baculus of Sorrento
- Christian feast day: Caesarius of Arles
- Christian feast day: David Lewis
- Christian feast day: Decuman
- Christian feast day: Gebhard of Constance
- Christian feast day: Euthalia
- Christian feast day: John of Pavia
- Christian feast day: Lycerius (or: Glycerius, Lizier)
- Christian feast day: Máel Ruba (or Rufus) (Scotland)
- Christian feast day: Margaret the Barefooted
- Christian feast day: Monica of Hippo, mother of Augustine of Hippo
- Christian feast day: Narnus
- Christian feast day: Our Lady of La Vang
- Christian feast day: Phanourios of Rhodes
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.