A birthday on the globe
13 August on the globe: what happened in the world on this day, and who was born
For 13 August, the English Wikipedia lists 59 events and 216 births. 32 of the events stand at their places as rays of light; nine more are dashed circles, where the sentence links only to a country or a sea. The taller the ray, the longer ago it happened. The people born that day come further down, as blue points.
A birthday, yours or someone else’s:
Turn it into a greetingScroll: the globe turns to each place
The day you were born, on the globe.
Three things from your day
Scroll: your day first, then 13 August through the years
The Earth on 13 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 13 August the Sun passes straight overhead at noon along the parallel of 14.6° north. In London, the day lasts about 14 hours 45 minutes.
Beyond 75° north the Sun no longer sets; beyond 75° 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 · Plymouth
1900
The steamer Deutschland of Hamburg America Lines sets a new record for the eastward passage when it docks in Plymouth, England, five days, 11 hours and 45 minutes after sailing from New York, breaking by three hours, six minutes its previous mark in its maiden voyage in July.
On the map: Plymouth.
Europe · Susteren
900
Count Reginar I of Hainault rises against Zwentibold of Lotharingia and slays him near present-day Susteren.
On the map: Susteren.
Europe · Brömsebro
1645
Sweden and Denmark sign the Peace of Brömsebro.
On the map: Brömsebro.
Europe · Bayreuth Festival
1876
A performance of Wagner's Das Rheingold opens the first Ring cycle at the first Bayreuth Festival.
On the map: Bayreuth Festival.
Also on the day’s list of Wikipedia in Chinese.
North America · Hartford, Connecticut
1889
William Gray of Hartford, Connecticut is granted United States Patent Number 408,709 for "Coin-controlled apparatus for telephones."
On the map: Hartford, Connecticut.
North America · Los Angeles
1969
The Apollo 11 astronauts enjoy a ticker-tape parade in New York City. That evening, at a state dinner in Los Angeles, they are awarded the Presidential Medal of Freedom by U.S. President Richard Nixon.
On the map: Los Angeles.
13 August
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 · Rio de Janeiro
2016
At the Rio de Janeiro 2016 Olympic Games, the American swimmer Michael Phelps wins his 23rd gold medal and 28th Olympic medal in total, consolidating himself as the greatest Olympic champion, the biggest medallist in the history of the Olympic Games and the best swimmer of all time.
On the map: Rio de Janeiro.
Translated from the list on Wikipedia in Spanish.
The article on Wikipedia in Spanish: Juegos Olímpicos de Río de Janeiro 2016
13 August
Born on 13 August#
The English Wikipedia lists 216 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 13 August
1899
Alfred Hitchcock, English-American director and producer (died 1980)
Place of birth: Leytonstone.
Born on 13 August
1918
Frederick Sanger, English biochemist and academic, Nobel Prize laureate (died 2013)
Place of birth: Rendcomb.
Born on 13 August
1888
John Logie Baird, Scottish engineer, invented the television (died 1946)
Place of birth: Helensburgh.
Born on 13 August
1970
Alan Shearer, English footballer and manager
Place of birth: Newcastle upon Tyne.
Born in Britain and Ireland
1819
Sir George Stokes, 1st Baronet, Anglo-Irish mathematician and physicist (died 1903)
Place of birth: Skreen.
Born in Britain and Ireland
1955
Paul Greengrass, English director and screenwriter
Place of birth: Cheam.
Born in Britain and Ireland
1984
James Morrison, English singer-songwriter and guitarist
Place of birth: Rugby.
13 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: 13 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 13 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.
- 29 BC
Octavian holds the first of three consecutive triumphs in Rome to celebrate the victory over the Dalmatian tribes.
Europe · Ancient RomeWikipedia: Augustus - 523
John I becomes the new Pope after the death of Pope Hormisdas.
no place on the mapWikipedia: Pope John I - 554
Emperor Justinian I issues a Pragmatic Sanction in which he organises the renewed Roman rule over the recently re-conquered Italy. All privileges granted to Romans under the Gothic rule until 538 are confirmed, confiscated estates restored and the participation of the Roman Church in civil government increased.
no place on the mapWikipedia: Gothic War - 582
Maurice is crowned Emperor of the Byzantine Empire by the dying emperor Tiberius.
Asia · Byzantine EmpireWikipedia: Maurice - 871
Emperor Louis II of Italy and Empress Engelberga are captured by Prince Adelchis of Benevento.
no place on the mapWikipedia: Louis II of Italy - 900
Count Reginar I of Hainault rises against Zwentibold of Lotharingia and slays him near present-day Susteren.
Europe · SusterenWikipedia: Reginar Longneck - 1099
Election of Pope Paschal II following the death of pope Urban II in the previous month.
no place on the mapWikipedia: Pope Paschal II - 1415
The English invasion of France begins when English king Henry V lands in France.
no place on the mapWikipedia: Hundred Years' War, 1415–1453 - 1516
The Treaty of Noyon between France and Spain is signed. Francis I of France recognizes Charles's claim to Naples, and Charles V, Holy Roman Emperor, recognizes Francis's claim to Milan.
Europe · NaplesWikipedia: War of the League of Cambrai - 1521
After an extended siege, forces led by Spanish conquistador Hernán Cortés capture Tlatoani Cuauhtémoc and conquer the Aztec capital of Tenochtitlan.
Latin America · Fall of TenochtitlanWikipedia: Fall of Tenochtitlan - 1532
Union of Brittany and France: The Duchy of Brittany is absorbed into the Kingdom of France.
Europe · Kingdom of FranceWikipedia: Union of the Duchy of Brittany with the Crown of France - 1536
Buddhist monks from Kyoto, Japan's Enryaku-ji temple set fire to 21 Nichiren temples throughout Kyoto in what will be known as the Tenbun Hokke Disturbance.
Asia · KyotoWikipedia: Kyoto - 1553
Michael Servetus is arrested by John Calvin in Geneva, Switzerland as a heretic.
Europe · GenevaWikipedia: Michael Servetus - 1624
The French king Louis XIII appoints Cardinal Richelieu as prime minister.
no place on the mapWikipedia: Louis XIII - 1645
Sweden and Denmark sign the Peace of Brömsebro.
Europe · BrömsebroWikipedia: Treaty of Brömsebro - 1650
Colonel George Monck of the English Army forms Monck's Regiment of Foot, which will later become the Coldstream Guards.
no place on the mapWikipedia: George Monck, 1st Duke of Albemarle - 1704
War of the Spanish Succession: Battle of Blenheim: English and Imperial forces are victorious over French and Bavarian troops.
Europe · Battle of BlenheimWikipedia: Battle of Blenheim - 1724
Johann Sebastian Bach leads the first performance of Nimm von uns, Herr, du treuer Gott, BWV 101, a chorale cantata on a famous tune.
no place on the mapWikipedia: Johann Sebastian Bach - 1762
Anglo-Spanish War: The United Kingdom captured Havana after a five-week siege, holding it until the Treaty of Paris the following year.
Latin America · HavanaWikipedia: Treaty of Paris - 1779
American Revolutionary War: The Royal Navy defeats the Penobscot Expedition with the most significant loss of United States naval forces prior to the attack on Pearl Harbor.
North America · Penobscot ExpeditionWikipedia: Penobscot Expedition - 1792
King Louis XVI of France is formally arrested by the National Tribunal, and declared an enemy of the people.
no place on the mapWikipedia: Louis XVI - 1806
Battle of Mišar during the Serbian Revolution begins. The battle ends two days later with a Serbian victory over the Ottomans.
Europe · Battle of MišarWikipedia: Serbian Revolution - 1814
The Convention of London, a treaty between the United Kingdom and the United Netherlands, is signed in London, England.
Europe · Sovereign Principality of the United NetherlandsWikipedia: Anglo-Dutch Treaty of 1814 - 1868
The 8.5–9.0 Mw Arica earthquake strikes southern Peru with a maximum Mercalli intensity of XI (Extreme), causing 25,000+ deaths and a destructive basin-wide tsunami that affected Hawaii and New Zealand.
Latin America · 1868 Arica earthquakeWikipedia: 1868 Arica earthquake - 1876
A performance of Wagner's Das Rheingold opens the first Ring cycle at the first Bayreuth Festival.
Europe · Bayreuth FestivalWikipedia: Bayreuth Festival - 1889
William Gray of Hartford, Connecticut is granted United States Patent Number 408,709 for "Coin-controlled apparatus for telephones."
North America · Hartford, ConnecticutWikipedia: Hartford, Connecticut - 1898
Carl Gustav Witt discovers 433 Eros, the first near-Earth asteroid to be found.
no place on the mapWikipedia: Carl Gustav Witt - 1898
Spanish–American War: Spanish and American forces engage in a mock battle for Manila, after which the Spanish commander surrendered in order to keep the city out of Filipino rebel hands.
Asia · Battle of ManilaWikipedia: Spanish–American War - 1900
The steamer Deutschland of Hamburg America Lines sets a new record for the eastward passage when it docks in Plymouth, England, five days, 11 hours and 45 minutes after sailing from New York, breaking by three hours, six minutes its previous mark in its maiden voyage in July.
Britain & Ireland · PlymouthWikipedia: SS Deutschland - 1905
Norwegians vote to end the union with Sweden.
Europe · NorwayWikipedia: 1905 Norwegian union dissolution referendum - 1906
The all black infantrymen of the U.S. Army's 25th Infantry Regiment are accused of killing a white bartender and wounding a white police officer in Brownsville, Texas, despite exculpatory evidence; all are later dishonorably discharged. (Their records were later restored to reflect honorable discharges but there were no financial settlements.)
North America · BrownsvilleWikipedia: Brownsville affair - 1913
First production in the UK of stainless steel by Harry Brearley.
no place on the mapWikipedia: Stainless steel - 1918
Bayerische Motoren Werke AG (BMW) is established as a public company in Germany.
no place on the mapWikipedia: BMW - 1918
Women enlist in the United States Marine Corps for the first time. Opha May Johnson is the first woman to enlist.
no place on the mapWikipedia: United States Marine Corps - 1920
Polish–Soviet War: The Battle of Warsaw begins and will last till August 25. The Red Army is defeated.
Europe · Central and Eastern EuropeWikipedia: Polish–Soviet War - 1937
Second Sino-Japanese War: The Battle of Shanghai begins.
Asia · Battle of ShanghaiWikipedia: Second Sino-Japanese War - 1940
World War II: The German Luftwaffe launches an air operation, codenamed Adlertag, during the Battle of Britain in an attempt to destroy the British Royal Air Force.
Britain & Ireland · Battle of BritainWikipedia: Adlertag - 1942
Major General Eugene Reybold of the U.S. Army Corps of Engineers authorizes the construction of facilities that would house the "Development of Substitute Materials" project, better known as the Manhattan Project.
North America · United States Army Corps of EngineersWikipedia: Manhattan Project - 1944
World War II: German troops begin the pillage and razing of Anogeia in Crete that would continue until September 5.
Europe · Razing of AnogeiaWikipedia: Razing of Anogeia - 1954
Radio Pakistan broadcasts the "Qaumī Tarāna", the national anthem of Pakistan for the first time.
Asia · PakistanWikipedia: Radio Pakistan - 1960
The Central African Republic declares independence from France.
Africa · Central African RepublicWikipedia: Central African Republic - 1961
Cold War: East Germany closes the border between the eastern and western sectors of Berlin to thwart its inhabitants' attempts to escape to the West, and construction of the Berlin Wall is started. The day is known as Barbed Wire Sunday.
Europe · East BerlinWikipedia: Cold War - 1964
Peter Allen and Gwynne Evans are hanged for the murder of John Alan West becoming the last people executed in the United Kingdom.
no place on the mapWikipedia: Murder of John Alan West - 1967
Two young women became the first fatal victims of grizzly bear attacks in the 57-year history of Montana's Glacier National Park in separate incidents.
North America · Glacier National ParkWikipedia: Night of the Grizzlies - 1968
Alexandros Panagoulis attempts to assassinate the Greek dictator Colonel Georgios Papadopoulos in Varkiza, Athens.
Europe · VarkizaWikipedia: Greek junta - 1969
The Apollo 11 astronauts enjoy a ticker-tape parade in New York City. That evening, at a state dinner in Los Angeles, they are awarded the Presidential Medal of Freedom by U.S. President Richard Nixon.
North America · Los AngelesWikipedia: Apollo 11 - 1973
Aviaco Flight 118 crashes on approach to A Coruña Airport in A Coruña, Spain, killing all 85 people on the plane and one other one the ground.
Europe · Aviaco Flight 118Wikipedia: Aviaco Flight 118 - 1977
Members of the British National Front (NF) clash with anti-NF demonstrators in Lewisham, London, resulting in 214 arrests and at least 111 injuries.
Britain & Ireland · LewishamWikipedia: Battle of Lewisham - 1978
One hundred fifty Palestinians in Beirut are killed in a terrorist attack during the second phase of the Lebanese Civil War.
Asia · BeirutWikipedia: Tel al-Zaatar massacre - 1990
A mainland Chinese fishing boat Min Ping Yu No. 5202 is hit by a Taiwanese naval vessel and sinks in a repatriation operation of mainland Chinese immigrants, resulting in 21 deaths. This is the second tragedy less than a month after Min Ping Yu No. 5540 incident.
no place on the mapWikipedia: Min Ping Yu No. 5202 - 1997
The animated TV comedy South Park airs its very first episode.
no place on the mapWikipedia: South Park - 1999
The Act on National Flag and Anthem was adopted, formally establishing the Hinomaru and "Kimigayo" as the Japanese national flag and anthem, respectively.
no place on the mapWikipedia: Act on National Flag and Anthem - 2004
Merely 22 hours after Tropical Storm Bonnie struck the U.S. state of Florida, Hurricane Charley inflicted further damage to the region.
North America · FloridaWikipedia: Tropical Storm Bonnie - 2004
One hundred fifty-six Congolese Tutsi refugees are massacred at the Gatumba refugee camp in Burundi.
Africa · GatumbaWikipedia: Democratic Republic of the Congo - 2008
Russo-Georgian War: Russian units occupy the Georgian city of Gori.
Asia · Russo-Georgian WarWikipedia: Russo-Georgian War - 2010
After being boarded by Canadian authorities, MV Sun Sea docked in British Columbia and the 492 Sri Lankan Tamil refugee claimants on board were placed in detention.
North America · British ColumbiaWikipedia: MV Sun Sea incident - 2014
A Cessna Citation Excel crashes in Santos, São Paulo, Brazil killing all seven people aboard, including Brazilian Socialist Party presidential candidate Eduardo Campos.
Latin America · 2014 Santos Cessna Citation crashWikipedia: 2014 Santos Cessna Citation crash - 2015
At least 76 people are killed and 212 others are wounded in a truck bombing in Baghdad, Iraq.
Asia · 2015 Sadr City market truck bombingWikipedia: 2015 Sadr City market truck bombing - 2020
Israel–United Arab Emirates relations are formally established.
no place on the mapWikipedia: Israel–United Arab Emirates relations
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.
- 2016
At the Rio de Janeiro 2016 Olympic Games, the American swimmer Michael Phelps wins his 23rd gold medal and 28th Olympic medal in total, consolidating himself as the greatest Olympic champion, the biggest medallist in the history of the Olympic Games and the best swimmer of all time.
Latin America · Rio de JaneiroTranslated from the list on Wikipedia in SpanishWikipedia: Juegos Olímpicos de Río de Janeiro 2016
Who was born on 13 August
In order of how many Wikipedia editions have an article about each. The first 60 of 216 are shown.
- 1926
Fidel Castro, Cuban lawyer and politician, ex-President of Cuba (died 2016)
- 1899
Alfred Hitchcock, English-American director and producer (died 1980)
LeytonstoneWikipedia: Alfred Hitchcock - 1918
Frederick Sanger, English biochemist and academic, Nobel Prize laureate (died 2013)
RendcombWikipedia: Frederick Sanger - 1871
Karl Liebknecht, German politician, co-founded Communist Party of Germany (died 1919)
LeipzigWikipedia: Karl Liebknecht - 1888
John Logie Baird, Scottish engineer, invented the television (died 1946)
HelensburghWikipedia: John Logie Baird - 1946
Janet Yellen, American economist, 78th United States secretary of the treasury
BrooklynWikipedia: Janet Yellen - 1963
Sridevi, Indian actress (died 2018)
SivakasiWikipedia: Sridevi - 1970
Alan Shearer, English footballer and manager
Newcastle upon TyneWikipedia: Alan Shearer - 1567
Samuel de Champlain, French explorer (died 1635)
Hiers-BrouageWikipedia: Samuel de Champlain - 1872
Richard Willstätter, German-Swiss chemist and academic, Nobel Prize Laureate (died 1942)
KarlsruheWikipedia: Richard Willstätter - 1814
Anders Jonas Ångström, Swedish physicist and astronomer (died 1874)
Lögdö brukWikipedia: Anders Jonas Ångström - 1913
Makarios III, Greek archbishop and politician, 1st President of Cyprus (died 1977)
Pano PanagiaWikipedia: Makarios III - 1982
Sebastian Stan, Romanian-American actor
ConstanțaWikipedia: Sebastian Stan - 1819
Sir George Stokes, 1st Baronet, Anglo-Irish mathematician and physicist (died 1903)
- 1912
Salvador Luria, Italian-American microbiologist and academic, Nobel Prize laureate (died 1991)
- 1992
Lucas Moura, Brazilian footballer
São PauloWikipedia: Lucas Moura - 1984
Niko Kranjčar, Croatian footballer
ZagrebWikipedia: Niko Kranjčar - 1942
Hissène Habré, Chadian politician and war criminal, 5th president of Chad (died 2021)
Faya-LargeauWikipedia: Hissène Habré - 1311
Alfonso XI, king of Castile and León (died 1350)
SalamancaWikipedia: Alfonso XI of Castile - 985
Al-Hakim bi-Amr Allah, Fatimid caliph (died 1021)
- 1955
Paul Greengrass, English director and screenwriter
- 1962
John Slattery, American actor, director, producer, and screenwriter
- 1818
Lucy Stone, American abolitionist and suffragist (died 1893)
West BrookfieldWikipedia: Lucy Stone - 1982
Sarah Huckabee Sanders, Governor of Arkansas, American political consultant and press secretary
- 1860
Annie Oakley, American target shooter (died 1926)
Darke CountyWikipedia: Annie Oakley - 1866
Giovanni Agnelli, Italian businessman, founded Fiat S.p.A. (died 1945)
Villar PerosaWikipedia: Giovanni Agnelli - 1902
Felix Wankel, German engineer (died 1988)
Schillerstraße 4Wikipedia: Felix Wankel - 1971
Moritz Bleibtreu, German actor
- 1912
Ben Hogan, American golfer and sportscaster (died 1997)
StephenvilleWikipedia: Ben Hogan - 1961
Koji Kondo, Japanese composer and sound director
NagoyaWikipedia: Koji Kondo - 1984
Alona Bondarenko, Ukrainian tennis player
Kryvyi RihWikipedia: Alona Bondarenko - 1990
DeMarcus Cousins, American basketball player
- 1990
Benjamin Stambouli, French footballer
MarseilleWikipedia: Benjamin Stambouli - 1756
James Gillray, English caricaturist and printmaker (died 1815)
ChelseaWikipedia: James Gillray - 1898
Jean Borotra, French tennis player (died 1994)
BiarritzWikipedia: Jean Borotra - 1964
Debi Mazar, American actress
JamaicaWikipedia: Debi Mazar - 1984
James Morrison, English singer-songwriter and guitarist
- 1919
George Shearing, English jazz pianist and bandleader (died 2011)
- 1949
Philippe Petit, French tightrope walker
NemoursWikipedia: Philippe Petit - 1625
Rasmus Bartholin, Danish physician, mathematician, and physicist (died 1698)
RoskildeWikipedia: Rasmus Bartholin - 1943
Ertha Pascal-Trouillot, President of Haiti
Pétion-VilleWikipedia: Ertha Pascal-Trouillot - 1974
Joe Perry, English snooker player
WisbechWikipedia: Joe Perry - 1976
Nicolás Lapentti, Ecuadorian tennis player
GuayaquilWikipedia: Nicolás Lapentti - 1986
Demetrious Johnson, American mixed martial artist
MadisonvilleWikipedia: Demetrious Johnson - 1803
Vladimir Odoyevsky, Russian philosopher and critic (died 1869)
- 1907
Alfried Krupp, German arms manufacturer, convicted war criminal, and Olympic yacht competitor (died 1967)
- 1948
Kathleen Battle, American operatic soprano
PortsmouthWikipedia: Kathleen Battle - 1951
Dan Fogelberg, American singer-songwriter and guitarist (died 2007)
PeoriaWikipedia: Dan Fogelberg - 1969
Midori Ito, Japanese figure skater
NagoyaWikipedia: Midori Ito - 1851
Felix Adler, German-American religious leader and educator (died 1933)
- 1879
John Ireland, English composer and educator (died 1962)
BowdonWikipedia: John Ireland - 1904
Buddy Rogers, American actor and musician (died 1999)
- 1933
Joycelyn Elders, American admiral and physician, 15th Surgeon General of the United States
- 1967
Quinn Cummings, American actress, author, and entrepreneur
Los AngelesWikipedia: Quinn Cummings - 1993
Johnny Gaudreau, American ice hockey player (died 2024)
- 1717
Louis François, Prince of Conti (died 1776)
- 1920
Neville Brand, American actor (died 1992)
GriswoldWikipedia: Neville Brand - 1989
Israel Jiménez, Mexican footballer
MonterreyWikipedia: Israel Jiménez - 1895
Bert Lahr, American actor (died 1967)
YorkvilleWikipedia: Bert Lahr - 1913
Fred Davis, English snooker player (died 1998)
ChesterfieldWikipedia: Fred Davis
What is celebrated on 13 August
- Christian feast day: Benedetto Sinigardi
- Christian feast day: Benildus Romançon
- Christian feast day: Cassian of Imola
- Christian feast day: Clara Maass (Lutheran Church)
- Christian feast day: Florence Nightingale, Octavia Hill (Lutheran Church)
- Christian feast day: Blessed Gertrude of Aldenberg
- Christian feast day: Hippolytus of Rome
- Christian feast day: Blessed Jakob Gapp
- Christian feast day: Jeremy Taylor (Anglican Communion)
- Christian feast day: John Berchmans
- Christian feast day: Junian of Mairé
- Christian feast day: Blessed Marco d'Aviano
- Christian feast day: Maximus the Confessor
- Christian feast day: Nerses Glaietsi (Catholic Church)
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.