A birthday on the globe
11 August on the globe: what happened in the world on this day, and who was born
For 11 August, the English Wikipedia lists 58 events and 209 births. 34 of the events stand at their places as rays of light; five 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 11 August through the years
The Earth on 11 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 11 August the Sun passes straight overhead at noon along the parallel of 15.2° north. In London, the day lasts about 14 hours 50 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.
Europe · Roman Dacia
106
The south-western part of Dacia (modern Romania) becomes a Roman province: Roman Dacia.
On the map: Roman Dacia.
Also on the day’s list of Wikipedia in Chinese.
Europe · Eiger
1858
The Eiger in the Bernese Alps is ascended for the first time by Charles Barrington accompanied by Christian Almer and Peter Bohren.
On the map: Eiger.
Europe · Sheremetyevo International Airport
1959
Sheremetyevo International Airport, the second-largest airport in Russia, opens.
On the map: Sheremetyevo International Airport.
Asia · Penang
1786
Captain Francis Light establishes the British colony of Penang in Malaysia.
On the map: Penang.
Asia · Dadra taluk
1961
The former Portuguese territories in India of Dadra and Nagar Haveli are merged to create the Union Territory Dadra and Nagar Haveli.
On the map: Dadra taluk.
Asia · Baikonur Cosmodrome
1962
Vostok 3 launches from the Baikonur Cosmodrome and cosmonaut Andrian Nikolayev becomes the first person to float in microgravity.
On the map: Baikonur Cosmodrome.
North America · League Park
1929
Babe Ruth becomes the first baseball player to hit 500 home runs in his career with a home run at League Park in Cleveland, Ohio.
On the map: League Park.
North America · 1520 Sedgwick Avenue
1973
At the 1520 Sedgwick Avenue apartment building in The Bronx, New York, DJ Kool Herc hosts a house party widely considered to mark the birthplace of hip-hop culture and music. DJ Kool Herc demonstrates a new technique of beat juggling and Coke La Rock performs a new style of vocal performance called rapping.
On the map: 1520 Sedgwick Avenue.
North America · Mall of America
1992
The Mall of America in Bloomington, Minnesota opens. At the time, it is the largest shopping mall in the United States.
On the map: Mall of America.
Also on the day’s list of Wikipedia in Chinese.
11 August
Born on 11 August#
The English Wikipedia lists 209 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 11 August
1950
Steve Wozniak, American computer scientist and programmer, co-founded Apple Inc.
Place of birth: San Jose.
Born on 11 August
1983
Chris Hemsworth, Australian actor
Place of birth: Melbourne.
Born on 11 August
1897
Enid Blyton, English author, poet, and educator (died 1968)
Place of birth: East Dulwich.
Born on 11 August
1953
Hulk Hogan, American professional wrestler (died 2025)
Place of birth: Augusta.
Born on 11 August
1965
Viola Davis, American actress
Place of birth: St. Matthews.
Born in Britain and Ireland
1944
Ian McDiarmid, Scottish actor
Place of birth: Carnoustie.
Born in Britain and Ireland
1968
Sophie Okonedo, British actress
Place of birth: London.
Born in Britain and Ireland
1966
Nigel Martyn, English footballer and coach
Place of birth: St Austell.
11 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: 11 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 11 August
The list is the English Wikipedia’s, in its own wording, as it stood in October 2026. 19 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.
- 3114 BC
The Mesoamerican Long Count calendar, used by several pre-Columbian Mesoamerican civilizations, notably the Maya, begins.
no place on the mapWikipedia: Pre-Columbian era - 2492 BC
Traditional date of the defeat of Bel by Hayk, progenitor and founder of the Armenian nation.
no place on the mapWikipedia: Bel - 106
The south-western part of Dacia (modern Romania) becomes a Roman province: Roman Dacia.
Europe · Roman DaciaWikipedia: Dacia - 117
Hadrian is proclaimed Roman emperor, two days after Trajan's death.
no place on the mapWikipedia: Hadrian - 355
Claudius Silvanus, accused of treason, proclaims himself Roman Emperor against Constantius II.
no place on the mapWikipedia: Silvanus - 490
Battle of Adda: The Goths under Theodoric the Great and his ally Alaric II defeat the forces of Odoacer on the Adda River, near Milan.
Europe · MilanWikipedia: Goths - 923
The Qarmatians of Bahrayn capture and pillage the city of Basra.
Asia · BasraWikipedia: Sack of Basra - 1309
Reconquista: Aragonese forces led by King James II landed on the coast of Almería, beginning an ultimately unsuccessful siege of the city, then held by the Emirate of Granada.
Europe · AlmeríaWikipedia: Reconquista - 1315
The Great Famine of Europe becomes so dire that even the king of England has difficulties buying bread for himself and his entourage.
Europe · Great Famine of 1315–1317Wikipedia: Great Famine of 1315–1317 - 1332
Wars of Scottish Independence: Battle of Dupplin Moor: Scots under Domhnall II, Earl of Mar are routed by Edward Balliol.
Britain & Ireland · Battle of Dupplin MoorWikipedia: Wars of Scottish Independence - 1473
The Battle of Otlukbeli: Mehmed the Conqueror of the Ottoman Empire decisively defeats Uzun Hassan of Aq Qoyunlu.
Asia · Battle of OtlukbeliWikipedia: Battle of Otlukbeli - 1492
Rodrigo de Borja is elected as Head of the Catholic Church, taking the name Pope Alexander VI.
no place on the mapWikipedia: Pope Alexander VI - 1675
Franco-Dutch War: Forces of the Holy Roman Empire defeat the French in the Battle of Konzer Brücke.
Europe · Battle of Konzer BrückeWikipedia: Battle of Konzer Brücke - 1685
Morean War: The 49-day Siege of Coron ends with the surrender and massacre of its garrison by the Venetians.
Europe · Conquest of CoronWikipedia: Morean War - 1786
Captain Francis Light establishes the British colony of Penang in Malaysia.
Asia · PenangWikipedia: Francis Light - 1804
Francis II assumes the title of first Emperor of Austria.
no place on the mapWikipedia: Francis II, Holy Roman Emperor - 1812
Peninsular War: French troops engage British-Portuguese forces in the Battle of Majadahonda.
Europe · Battle of MajadahondaWikipedia: Battle of Majadahonda - 1813
In Colombia, Juan del Corral declares the independence of Antioquia.
no place on the mapWikipedia: Colombia - 1858
The Eiger in the Bernese Alps is ascended for the first time by Charles Barrington accompanied by Christian Almer and Peter Bohren.
Europe · EigerWikipedia: Eiger - 1871
An explosion of guncotton occurs in Stowmarket, England, killing 28.
Britain & Ireland · Stowmarket Guncotton ExplosionWikipedia: Stowmarket Guncotton Explosion - 1898
Spanish–American War: American troops enter the city of Mayagüez, Puerto Rico.
Latin America · Mayagüez, Puerto RicoWikipedia: Spanish–American War - 1918
World War I: The Battle of Amiens ends.
Europe · Battle of AmiensWikipedia: World War I - 1919
Germany's Weimar Constitution is signed into law.
no place on the mapWikipedia: Weimar Constitution - 1920
The 1920 Cork hunger strike begins which eventually results in the deaths of three Irish Republicans including the Lord Mayor of Cork Terence MacSwiney.
no place on the mapWikipedia: 1920 Cork hunger strike - 1920
The Latvian–Soviet Peace Treaty, which relinquished Russia's authority and pretenses to Latvia, is signed, ending the Latvian War of Independence.
Europe · Latvian War of IndependenceWikipedia: Latvian–Soviet Peace Treaty - 1929
Babe Ruth becomes the first baseball player to hit 500 home runs in his career with a home run at League Park in Cleveland, Ohio.
North America · League ParkWikipedia: Babe Ruth - 1929
The first Bud Billiken Parade and Picnic, the oldest and largest African-American parade in the United States, was held in Chicago.
no place on the mapWikipedia: Bud Billiken Parade and Picnic - 1934
The first civilian prisoners arrive at the Federal prison on Alcatraz Island.
North America · Alcatraz Federal PenitentiaryWikipedia: Alcatraz Island - 1942
Actress Hedy Lamarr and composer George Antheil receive a patent for a Frequency-hopping spread spectrum communication system that later became the basis for modern technologies in wireless telephones, two-way radio communications, and Wi-Fi.
no place on the mapWikipedia: Hedy Lamarr - 1945
Poles in Kraków engage in a pogrom against Jews in the city, killing one and wounding five.
Europe · Kraków pogromWikipedia: Kraków pogrom - 1952
Hussein bin Talal is proclaimed King of Jordan.
Asia · JordanWikipedia: Hussein of Jordan - 1959
Sheremetyevo International Airport, the second-largest airport in Russia, opens.
Europe · Sheremetyevo International AirportWikipedia: Sheremetyevo International Airport - 1960
Chad declares independence from France.
Africa · ChadWikipedia: Chad - 1961
The former Portuguese territories in India of Dadra and Nagar Haveli are merged to create the Union Territory Dadra and Nagar Haveli.
Asia · Dadra talukWikipedia: India - 1962
Vostok 3 launches from the Baikonur Cosmodrome and cosmonaut Andrian Nikolayev becomes the first person to float in microgravity.
Asia · Baikonur CosmodromeWikipedia: Vostok 3 and 4 - 1965
Race riots (the Watts Riots) begin in the Watts area of Los Angeles, California.
North America · Watts riotsWikipedia: Watts riots - 1969
The Apollo 11 astronauts are released from a three-week quarantine following their liftoff from the Moon.
no place on the mapWikipedia: Apollo 11 - 1972
Vietnam War: The last United States ground combat unit leaves South Vietnam.
Asia · South VietnamWikipedia: Vietnam War - 1973
At the 1520 Sedgwick Avenue apartment building in The Bronx, New York, DJ Kool Herc hosts a house party widely considered to mark the birthplace of hip-hop culture and music. DJ Kool Herc demonstrates a new technique of beat juggling and Coke La Rock performs a new style of vocal performance called rapping.
North America · 1520 Sedgwick AvenueWikipedia: 1520 Sedgwick Avenue - 1975
East Timor: Governor Mário Lemos Pires of Portuguese Timor abandons the capital Dili, following a coup by the Timorese Democratic Union (UDT) and the outbreak of civil war between UDT and Fretilin.
Asia · DiliWikipedia: Timor-Leste - 1977
The U.S. National Highway Traffic Safety Administration initiated an investigation into the alleged vulnerability of the Ford Pinto to fuel leakage and fire in a rear-end collision.
no place on the mapWikipedia: National Highway Traffic Safety Administration - 1979
Two Aeroflot Tupolev Tu-134s collide over the Ukrainian city of Dniprodzerzhynsk and crash, killing all 178 aboard both airliners.
Europe · 1979 Dniprodzerzhynsk mid-air collisionWikipedia: 1979 Dniprodzerzhynsk mid-air collision - 1982
A bomb explodes on Pan Am Flight 830, en route from Tokyo, Japan to Honolulu, Hawaii, killing one passenger and injuring 15 others.
Oceans · Pan Am Flight 830Wikipedia: Pan Am Flight 830 - 1984
"We begin bombing in five minutes": United States President Ronald Reagan, while running for re-election, jokes while preparing to make his weekly Saturday address on National Public Radio.
no place on the mapWikipedia: We begin bombing in five minutes - 1988
A meeting between Sayyed Imam Al-Sharif, Osama bin Laden, Abdullah Yusuf Azzam, and leaders of Egyptian Islamic Jihad in Afghanistan culminates in the formation of Al-Qaeda.
Asia · AfghanistanWikipedia: Sayyed Imam Al-Sharif - 1991
Nickelodeon's first line of "Nicktoons" (Doug, Rugrats and Ren & Stimpy) premiere on the channel.
no place on the mapWikipedia: Nickelodeon - 1992
The Mall of America in Bloomington, Minnesota opens. At the time, it is the largest shopping mall in the United States.
North America · Mall of AmericaWikipedia: Mall of America - 1995
The Russell Hill subway accident in Toronto kills three and injures 30, due to a combination of human error and a safety system design flaw.
North America · TorontoWikipedia: 1995 Russell Hill subway accident - 1996
The killing of Tassos Isaac by Turkish nationalists of the Grey Wolves in the United Nations Buffer Zone in Cyprus.
no place on the mapWikipedia: United Nations Buffer Zone in Cyprus - 1999
A tornado struck downtown Salt Lake City, damaging 120 homes and injuring over 100 people.
no place on the mapWikipedia: 1999 Salt Lake City tornado - 1999
Ken Levine's System Shock 2 was released to mediocre sales, but later received critical acclaim and influenced subsequent first-person shooter game design.
no place on the mapWikipedia: Ken Levine - 2000
An air rage incident occurs on board Southwest Airlines Flight 1763 when 19-year-old Jonathan Burton attempts to storm the cockpit, but he is subdued by other passengers and dies from his injuries.
no place on the mapWikipedia: Southwest Airlines Flight 1763 - 2003
Jemaah Islamiyah leader Riduan Isamuddin, better known as Hambali, is arrested in Bangkok, Thailand.
Asia · BangkokWikipedia: Jemaah Islamiyah - 2003
NATO takes over command of the peacekeeping force in Afghanistan, marking its first major operation outside Europe in its 54-year-history.
Asia · AfghanistanWikipedia: NATO - 2006
The oil tanker MT Solar 1 sinks off the coast of Guimaras and Negros Islands in the Philippines, causing the country's worst oil spill.
Asia · GuimarasWikipedia: Oil tanker - 2012
At least 306 people are killed and 3,000 others injured in a pair of earthquakes near Tabriz, Iran.
Asia · 2012 East Azerbaijan earthquakesWikipedia: 2012 East Azerbaijan earthquakes - 2017
At least 41 people are killed and another 179 injured after two passenger trains collide in Alexandria, Egypt.
Africa · AlexandriaWikipedia: Alexandria train collision - 2023
Luna 25 launches from the Vostochny Cosmodrome.
Asia · Vostochny CosmodromeWikipedia: Luna 25
Who was born on 11 August
In order of how many Wikipedia editions have an article about each. The first 60 of 209 are shown.
- 1943
Pervez Musharraf, Pakistani general and politician, 10th President of Pakistan (died 2023)
- 1950
Steve Wozniak, American computer scientist and programmer, co-founded Apple Inc.
San JoseWikipedia: Steve Wozniak - 1983
Chris Hemsworth, Australian actor
MelbourneWikipedia: Chris Hemsworth - 1897
Enid Blyton, English author, poet, and educator (died 1968)
East DulwichWikipedia: Enid Blyton - 1953
Hulk Hogan, American professional wrestler (died 2025)
AugustaWikipedia: Hulk Hogan - 1965
Viola Davis, American actress
St. MatthewsWikipedia: Viola Davis - 1858
Christiaan Eijkman, Dutch physician and academic, Nobel Prize laureate (died 1930)
- 1926
Aaron Klug, Lithuanian-English chemist and biophysicist, Nobel Prize laureate (died 2018)
- 1837
Marie François Sadi Carnot, French engineer and politician, 4th President of the French Republic (died 1894)
LimogesWikipedia: Sadi Carnot - 1967
Massimiliano Allegri, Italian footballer and manager
- 1086
Henry V, Holy Roman Emperor (died 1125)
- 1985
Jacqueline Fernandez, Bahraini–Sri Lankan actress
- 1833
Robert G. Ingersoll, American soldier, lawyer, and politician (died 1899)
- 1967
Joe Rogan, American actor, comedian, and television host
NewarkWikipedia: Joe Rogan - 1921
Alex Haley, American historian and author (died 1992)
IthacaWikipedia: Alex Haley - 1968
Anna Gunn, American actress
ClevelandWikipedia: Anna Gunn - 1976
Iván Córdoba, Colombian footballer and manager
RionegroWikipedia: Iván Córdoba - 1957
Masayoshi Son, Japanese technology entrepreneur and investor
- 1932
Fernando Arrabal, Spanish actor, director, and playwright
MelillaWikipedia: Fernando Arrabal - 1944
Ian McDiarmid, Scottish actor
CarnoustieWikipedia: Ian McDiarmid - 1949
Eric Carmen, American singer-songwriter and guitarist (died 2024)
ClevelandWikipedia: Eric Carmen - 1991
Cristian Tello, Spanish footballer
SabadellWikipedia: Cristian Tello - 1933
Jerzy Grotowski, Polish director and producer (died 1999)
RzeszówWikipedia: Jerzy Grotowski - 1961
Suniel Shetty, Indian actor and film producer
MangaluruWikipedia: Suniel Shetty - 1970
Gianluca Pessotto, Italian footballer
LatisanaWikipedia: Gianluca Pessotto - 1892
Eiji Yoshikawa, Japanese author (died 1962)
YokohamaWikipedia: Eiji Yoshikawa - 1946
Marilyn vos Savant, American journalist and author
St. LouisWikipedia: Marilyn vos Savant - 1993
Alyson Stoner, American actor, singer, and dancer
ToledoWikipedia: Alyson Stoner - 1778
Friedrich Ludwig Jahn, Prussian gymnast, educator, and politician (died 1852)
- 1905
Erwin Chargaff, Austrian-American biochemist and academic (died 2002)
ChernivtsiWikipedia: Erwin Chargaff - 1933
Jerry Falwell, American minister and television host (died 2007)
LynchburgWikipedia: Jerry Falwell - 1911
Thanom Kittikachorn, Thai field marshal and politician, 10th Prime Minister of Thailand (died 2004)
Mueang TakWikipedia: Thanom Kittikachorn - 1956
Pierre-Louis Lions, French mathematician and academic
- 1965
Embeth Davidtz, American actress
LafayetteWikipedia: Embeth Davidtz - 1968
Sophie Okonedo, British actress
- 1939
James Mancham, first President of Seychelles (died 2017)
VictoriaWikipedia: James Mancham - 1959
Gustavo Cerati, Argentinian singer-songwriter, guitarist, and producer (died 2014)
BarracasWikipedia: Gustavo Cerati - 1984
Lucas di Grassi, Brazilian race car driver
São PauloWikipedia: Lucas di Grassi - 1988
Patty Mills, Australian basketball player
CanberraWikipedia: Patty Mills - 1384
Yolande of Aragon (died 1442)
BarcelonaWikipedia: Yolande of Aragon - 1925
Arlene Dahl, American actress, businesswoman and writer (died 2021)
MinneapolisWikipedia: Arlene Dahl - 1902
Alfredo Binda, Italian cyclist (died 1986)
CittiglioWikipedia: Alfredo Binda - 1932
Peter Eisenman, American architect, designed the City of Culture of Galicia
- 1833
Kido Takayoshi, Japanese samurai and politician (died 1877)
- 1900
Charley Paddock, American sprinter (died 1943)
GainesvilleWikipedia: Charley Paddock - 1964
Jim Lee, South Korean-American author and illustrator
SeoulWikipedia: Jim Lee - 1966
Nigel Martyn, English footballer and coach
St AustellWikipedia: Nigel Martyn - 1979
Walter Ayoví, Ecuadorian footballer
Esmeraldas CantonWikipedia: Walter Ayoví - 1892
Hugh MacDiarmid, Scottish poet and linguist (died 1978)
LangholmWikipedia: Hugh MacDiarmid - 1902
Lloyd Nolan, American actor (died 1985)
San FranciscoWikipedia: Lloyd Nolan - 1913
Angus Wilson, English author and academic (died 1991)
Bexhill-on-SeaWikipedia: Angus Wilson - 1973
Kristin Armstrong, American cyclist
MemphisWikipedia: Kristin Armstrong - 1860
Ottó Bláthy, Hungarian engineer and chess player (died 1939)
- 1909
Uku Masing, Estonian philosopher and theologian (died 1985)
- 1927
Stuart Rosenberg, American director and producer (died 2007)
BrooklynWikipedia: Stuart Rosenberg - 1962
Rob Minkoff, American director and producer
Palo AltoWikipedia: Rob Minkoff - 1937
Anna Massey, English actress (died 2011)
ThakehamWikipedia: Anna Massey - 1985
Asher Roth, American rapper
MorrisvilleWikipedia: Asher Roth - 1902
Christian de Castries, French general (died 1991)
- 1971
Alejandra Barros, Mexican actress and screenwriter
Mexico CityWikipedia: Alejandra Barros
What is celebrated on 11 August
- Christian Feast Day: Athracht
- Christian Feast Day: Clare of Assisi
- Christian Feast Day: Gaugericus
- Christian Feast Day: John Henry Newman (Church of England)
- Christian Feast Day: Blessed John Sandys and Stephen Rowsham
- Christian Feast Day: Blessed Maurice Tornay
- Christian Feast Day: Philomena
- Christian Feast Day: Susanna
- Christian Feast Day: Taurinus of Évreux
- Christian Feast Day: Tiburtius and Chromatius
- Christian Feast Day: August 11 (Eastern Orthodox liturgics)
- Flag Day (Pakistan)
- Independence Day, celebrates the independence of Chad from France in 1960.
- Mountain Day (Japan)
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.