A birthday on the globe
26 December on the globe: what happened in the world on this day, and who was born
For 26 December, the English Wikipedia lists 57 events and 202 births. 30 of the events stand at their places as rays of light; two 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 26 December through the years
The Earth on 26 December
The picture on the globe was assembled by NASA from satellite photographs taken in December 2004: the snow, the ice and the green are those of the month.
On 26 December the Sun passes straight overhead at noon along the parallel of 23.4° south. In London, the day lasts about 7 hours 50 minutes.
Beyond 67° south the Sun no longer sets; beyond 67° north it no longer rises.
The line between day and night is tilted on the globe exactly as on this day of the year. On the dark side you can see the lights of towns.
Britain & Ireland · Rendlesham Forest incident
1980
Witnesses report the first of several sightings of unexplained lights near RAF Woodbridge, in Rendlesham Forest, Suffolk, England, United Kingdom, an incident called "Britain's Roswell".
On the map: the coordinates Wikidata gives for the article “Rendlesham Forest incident”.
Europe · Pavia
887
Berengar I is elected as king of Italy by the lords of Lombardy. He is crowned with the Iron Crown of Lombardy at Pavia.
On the map: Pavia.
Europe · Bratislava
1805
Austria and France sign the Treaty of Pressburg.
On the map: Bratislava.
Also on the day’s list of Wikipedia in Spanish and Romanian.
Asia · Beijing
2012
China opens the world's longest high-speed rail route, which links Beijing and Guangzhou.
On the map: Beijing.
North America · California State University, Long Beach
1966
The first Kwanzaa is celebrated by Maulana Karenga, the chair of Black Studies at California State University, Long Beach.
On the map: California State University, Long Beach.
26 December
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 · Florence
1598
At the Palazzo Tornabuoni in Florence (Italy), La Dafne, the first opera in history, composed by the Italian composer Jacopo Peri (1561-1633), is performed privately for the first time. It will premiere in public on 21 January 1599 at the Palazzo Pitti in Florence.
On the map: Florence.
Translated from the list on Wikipedia in Spanish.
26 December
Born on 26 December#
The English Wikipedia lists 202 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 26 December
1791
Charles Babbage, English mathematician and engineer, invented the Difference engine (died 1871)
Place of birth: Walworth.
Born on 26 December
1891
Henry Miller, American author and painter (died 1980)
Place of birth: Yorkville.
Born on 26 December
1971
Jared Leto, American actor and musician
Place of birth: Bossier City.
Born on 26 December
1963
Lars Ulrich, Danish-American drummer, songwriter, and producer
Place of birth: Gentofte.
Born in Britain and Ireland
1986
Kit Harington, English actor
Place of birth: Acton.
Born in Britain and Ireland
1990
Aaron Ramsey, Welsh footballer
Place of birth: Caerphilly.
Born in Britain and Ireland
1780
Mary Somerville, Scottish mathematician, astronomer, and author (died 1872)
Place of birth: Jedburgh.
26 December
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: 26 December 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 26 December
The list is the English Wikipedia’s, in its own wording, as it stood in October 2026. 25 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.
- 795
Election of Pope Leo III.
no place on the mapWikipedia: Pope Leo III - 887
Berengar I is elected as king of Italy by the lords of Lombardy. He is crowned with the Iron Crown of Lombardy at Pavia.
Europe · PaviaWikipedia: Iron Crown - 1481
Battle of Westbroek: An army of 4,000 to 5,000 soldiers raised by David of Burgundy, Bishop of Utrecht, attacks an armed mob of people from nearby Utrecht who were trying to avenge the massacre of the inhabitants of Westbroek.
Europe · UtrechtWikipedia: Battle of Westbroek - 1606
The first known performance of King Lear, a tragedy written by William Shakespeare and based on the legend of Leir of Britain, took place before King James I.
no place on the mapWikipedia: King Lear - 1704
Second Battle of Anandpur: In the Second Battle of Anandpur, Aurangzeb's two generals, Wazir Khan and Zaberdast Khan executed two children of Guru Gobind Singh, Zorawar Singh aged eight and Fateh Singh aged five, by burying them alive into a wall.
Asia · Anandpur SahibWikipedia: Second siege of Anandpur - 1709
The opera Agrippina by George Frideric Handel premiered in Venice.
no place on the mapWikipedia: Agrippina - 1723
Bach led the first performance of Darzu ist erschienen der Sohn Gottes, BWV 40, his first Christmas Cantata composed for Leipzig.
no place on the mapWikipedia: Johann Sebastian Bach - 1776
American Revolutionary War: In the Battle of Trenton, the Continental Army under General George Washington executes a successful surprise attack and defeats a garrison of Hessian forces serving Great Britain.
North America · Battle of TrentonWikipedia: Battle of Trenton - 1790
Louis XVI of France gives his public assent to Civil Constitution of the Clergy during the French Revolution.
no place on the mapWikipedia: French Revolution - 1793
Second Battle of Wissembourg: France defeats Austria.
Europe · Second Battle of WissembourgWikipedia: Second Battle of Wissembourg - 1799
Henry Lee III's eulogy to George Washington in congress declares him as "first in war, first in peace and first in the hearts of his countrymen".
no place on the mapWikipedia: Henry Lee III - 1800
Philip Gidley King, Governor of New South Wales, ordered the formation of the Governor's Body Guard of Light Horse, described as the first full-time military unit raised in Australia.
no place on the mapWikipedia: Philip Gidley King - 1805
Austria and France sign the Treaty of Pressburg.
Europe · BratislavaWikipedia: Peace of Pressburg - 1806
Battles of Pultusk and Golymin: Russian forces hold French forces under Napoleon.
Europe · Battle of PułtuskWikipedia: Battle of Pułtusk - 1811
A theater fire in Richmond, Virginia kills 72 people, including the Governor of Virginia George William Smith and the president of the First National Bank of Virginia Abraham B. Venable.
North America · Richmond Theatre fireWikipedia: Richmond Theatre fire - 1825
Advocates of liberalism in Russia rise up against Czar Nicholas I in the Decembrist revolt, but are later suppressed.
Europe · Decembrist revoltWikipedia: Decembrist revolt - 1843
The discovery of octonions by John T. Graves, who denoted them with a boldface O, was announced to his mathematician friend William Hamilton, discoverer of quaternions, in a letter on this date.
no place on the mapWikipedia: Octonion - 1860
First Rules derby is held between Sheffield F.C. and Hallam F.C., the oldest football fixture in the world.
no place on the mapWikipedia: Rules derby - 1861
American Civil War: The Trent Affair: Confederate diplomatic envoys James Murray Mason and John Slidell are freed by the United States government, thus easing tensions between the U.S. and the United Kingdom.
no place on the mapWikipedia: American Civil War - 1862
American Civil War: The Battle of Chickasaw Bayou begins as Union General William T. Sherman starts landing his troops in an attempt to advance on Vicksburg, Mississippi.
North America · Battle of Chickasaw BayouWikipedia: Battle of Chickasaw Bayou - 1862
Dakota War of 1862: The largest mass-hanging in U.S. history takes place in Mankato, Minnesota, where 38 Native American prisoners are hanged.
North America · Dakota TerritoryWikipedia: Dakota War of 1862 - 1871
Thespis, the first Gilbert and Sullivan collaboration, debuts.
no place on the mapWikipedia: Thespis - 1898
Marie and Pierre Curie announce the isolation of radium.
no place on the mapWikipedia: Marie Curie - 1919
Babe Ruth of the Boston Red Sox is sold to the New York Yankees by owner Harry Frazee, allegedly establishing the Curse of the Bambino superstition.
no place on the mapWikipedia: Babe Ruth - 1926
World premiere of Sibelius's tone poem Tapiola.
no place on the mapWikipedia: Jean Sibelius - 1941
British Prime Minister Winston Churchill addresses a joint meeting of the U.S. Congress.
no place on the mapWikipedia: Winston Churchill's address to the United States Congress - 1941
U.S. President Franklin D. Roosevelt signs a bill establishing the fourth Thursday in November as Thanksgiving Day in the United States.
no place on the mapWikipedia: Franklin D. Roosevelt - 1943
World War II: German warship Scharnhorst is sunk off Norway's North Cape after a battle against major Royal Navy forces.
Europe · Battle of the North CapeWikipedia: Battle of the North Cape - 1944
World War II: George S. Patton's Third Army breaks the encirclement of surrounded U.S. forces at Bastogne, Belgium.
Europe · Siege of BastogneWikipedia: United States Army Central - 1946
American gangster Bugsy Siegel opened The Flamingo Hotel & Casino in Las Vegas, the oldest casino still in operation on the Las Vegas Strip.
North America · Flamingo Las VegasWikipedia: Las Vegas Strip - 1948
Cardinal József Mindszenty is arrested in Hungary and accused of treason and conspiracy.
no place on the mapWikipedia: József Mindszenty - 1948
The last Soviet troops withdraw from North Korea.
no place on the mapWikipedia: Soviet Union - 1963
The Beatles' "I Want to Hold Your Hand" and "I Saw Her Standing There" are released in the United States, marking the beginning of Beatlemania on an international level.
no place on the mapWikipedia: The Beatles - 1966
The first Kwanzaa is celebrated by Maulana Karenga, the chair of Black Studies at California State University, Long Beach.
North America · California State University, Long BeachWikipedia: Kwanzaa - 1968
Pan Am Flight 799 crashes during takeoff from Elmendorf Air Force Base, killing three.
North America · Pan Am Flight 799Wikipedia: Pan Am Flight 799 - 1968
The Communist Party of the Philippines is established by Jose Maria Sison, breaking away from the Partido Komunista ng Pilipinas-1930.
no place on the mapWikipedia: Communist Party of the Philippines - 1972
Vietnam War: As part of Operation Linebacker II, 120 American B-52 Stratofortress bombers attacked Hanoi, including 78 launched from Andersen Air Force Base in Guam, the largest single combat launch in Strategic Air Command history.
Asia · HanoiWikipedia: Vietnam War - 1975
Tu-144, the world's first commercial supersonic aircraft, surpassing Mach 2, goes into service.
no place on the mapWikipedia: Tupolev Tu-144 - 1978
The inaugural Paris-Dakar Rally begins.
no place on the mapWikipedia: Dakar Rally - 1980
Witnesses report the first of several sightings of unexplained lights near RAF Woodbridge, in Rendlesham Forest, Suffolk, England, United Kingdom, an incident called "Britain's Roswell".
Britain & Ireland · Rendlesham Forest incidentWikipedia: Rendlesham Forest incident - 1989
United Express Flight 2415 crashes on approach to the Tri-Cities Airport in Pasco, Washington, killing all six people on board.
North America · United Express Flight 2415Wikipedia: United Express Flight 2415 - 1991
The Supreme Soviet of the Soviet Union meets and formally dissolves the Soviet Union, ending the Cold War.
Asia · Dissolution of the Soviet UnionWikipedia: Dissolution of the Soviet Union - 1993
Kuban Airlines Flight 5719 crashes during a go-around at Gyumri Shirak International Airport, killing 35 of the 36 people on board.
Asia · Kuban Airlines Flight 5719Wikipedia: Kuban Airlines Flight 5719 - 1994
Four Armed Islamic Group hijackers seize control of Air France Flight 8969. When the plane lands at Marseille, a French Gendarmerie assault team boards the aircraft and kills the hijackers.
Europe · Air France Flight 8969Wikipedia: Air France Flight 8969 - 1996
Six-year-old American beauty queen JonBenét Ramsey was found beaten and strangled in the basement of her family's home in Boulder, Colorado.
North America · BoulderWikipedia: Killing of JonBenét Ramsey - 1996
The Federation of Korean Trade Unions called on its 1.2 million members to refuse to work, beginning the largest organized strike in South Korean history.
no place on the mapWikipedia: Federation of Korean Trade Unions - 1998
Iraq announces its intention to fire upon U.S. and British warplanes that patrol the northern and southern no-fly zones.
Asia · Ba'athist IraqWikipedia: Iraqi no-fly zones conflict - 1999
The storm Lothar sweeps across Central Europe, killing 137 and causing US$1.3 billion in damage.
no place on the mapWikipedia: Cyclone Lothar - 2003
The 6.6 Mw Bam earthquake shakes southeastern Iran with a maximum Mercalli intensity of IX (Violent), leaving more than 26,000 dead and 30,000 injured.
Asia · 2003 Bam earthquakeWikipedia: 2003 Bam earthquake - 2004
Orange Revolution: The final run-off election in Ukraine is held under heavy international scrutiny.
Europe · UkraineWikipedia: 2004 Ukrainian presidential election - 2004
The 9.1–9.3 Mw Indian Ocean earthquake shakes northern Sumatra with a maximum Mercalli intensity of IX (Violent). One of the largest observed tsunamis, it affected coastal and partially mainland areas of Thailand, India, Sri Lanka, the Maldives, Malaysia, Myanmar, Bangladesh, and Indonesia; death toll is estimated at 227,898.
Asia · 2004 Indian Ocean earthquake and tsunamiWikipedia: 2004 Indian Ocean earthquake and tsunami - 2006
Two earthquakes in Hengchun, Taiwan measuring 7.0 and 6.9 on the moment magnitude scale kill two and disrupt telecommunications across Asia.
Asia · 2006 Hengchun earthquakesWikipedia: 2006 Hengchun earthquakes - 2012
China opens the world's longest high-speed rail route, which links Beijing and Guangzhou.
Asia · BeijingWikipedia: High-speed rail in China - 2013
An Irkut-Avia Antonov An-12 crashes on approach to Irkutsk Northwest Airport, killing all nine people on board.
Asia · 2013 Irkut-Avia An-12 crashWikipedia: 2013 Irkut-Avia An-12 crash - 2015
A violent EF-4 tornado hits Garland, Texas, killing nine and injuring almost 500 others.
North America · Garland, TexasWikipedia: 2015 Garland tornado - 2021
Three people are killed when a 14-year-old opens fire on civilians at a Texaco convenience store in Garland, Texas.
North America · 2021 Garland shootingWikipedia: 2021 Garland shooting - 2025
Israel recognises Somaliland as an independent state, becoming the first country to do so.
no place on the mapWikipedia: Israel
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.
- 1598
At the Palazzo Tornabuoni in Florence (Italy), La Dafne, the first opera in history, composed by the Italian composer Jacopo Peri (1561-1633), is performed privately for the first time. It will premiere in public on 21 January 1599 at the Palazzo Pitti in Florence.
Who was born on 26 December
In order of how many Wikipedia editions have an article about each. The first 60 of 202 are shown.
- 1893
Mao Zedong, Chinese politician, Chairman of the Chinese Communist Party (died 1976)
ShaoshanWikipedia: Mao Zedong - 1791
Charles Babbage, English mathematician and engineer, invented the Difference engine (died 1871)
WalworthWikipedia: Charles Babbage - 1891
Henry Miller, American author and painter (died 1980)
YorkvilleWikipedia: Henry Miller - 1194
Frederick II, Holy Roman Emperor (died 1250)
- 1971
Jared Leto, American actor and musician
Bossier CityWikipedia: Jared Leto - 1986
Hugo Lloris, French footballer
- 1864
Yun Chi-ho, Korean activist and politician (died 1945)
- 1949
José Ramos-Horta, East Timorese lawyer and politician, 2nd President of East Timor, Nobel Prize laureate
- 1953
Toomas Hendrik Ilves, Swedish-Estonian journalist and politician, 4th President of Estonia
StockholmWikipedia: Toomas Hendrik Ilves - 1963
Lars Ulrich, Danish-American drummer, songwriter, and producer
GentofteWikipedia: Lars Ulrich - 1904
Alejo Carpentier, Swiss-Cuban musicologist and author (died 1980)
LausanneWikipedia: Alejo Carpentier - 1986
Kit Harington, English actor
- 1990
Aaron Ramsey, Welsh footballer
CaerphillyWikipedia: Aaron Ramsey - 1990
Denis Cheryshev, Russian footballer
Nizhny NovgorodWikipedia: Denis Cheryshev - 1872
Norman Angell, English journalist, academic, and politician, Nobel Prize laureate (died 1967)
Mansion HouseWikipedia: Norman Angell - 1780
Mary Somerville, Scottish mathematician, astronomer, and author (died 1872)
JedburghWikipedia: Mary Somerville - 1716
Thomas Gray, English poet and scholar (died 1771)
LondonWikipedia: Thomas Gray - 1939
Phil Spector, American singer-songwriter and producer (died 2021)
New York CityWikipedia: Phil Spector - 1803
Friedrich Reinhold Kreutzwald, Estonian physician and author (died 1882)
Jõepere manorWikipedia: Friedrich Reinhold Kreutzwald - 1940
Edward C. Prescott, American economist and academic, Nobel Prize laureate (died 2022)
Glens FallsWikipedia: Edward C. Prescott - 1989
Yohan Blake, Jamaican sprinter
Saint James ParishWikipedia: Yohan Blake - 1883
Maurice Utrillo, French painter (died 1955)
18th arrondissement of ParisWikipedia: Maurice Utrillo - 1914
Richard Widmark, American actor (died 2008)
Sunrise TownshipWikipedia: Richard Widmark - 1937
John Horton Conway, English mathematician, known for Conway's Game of Life (died 2020)
LiverpoolWikipedia: John Horton Conway - 1989
Sofiane Feghouli, Algerian footballer
Levallois-PerretWikipedia: Sofiane Feghouli - 1953
Leonel Fernández, Dominican lawyer and politician, 51st President of the Dominican Republic
Santo DomingoWikipedia: Leonel Fernández - 1769
Ernst Moritz Arndt, German writer and poet (died 1860)
Gross SchoritzWikipedia: Ernst Moritz Arndt - 1928
Martin Cooper, American engineer, invented the mobile phone
ChicagoWikipedia: Martin Cooper - 1975
Marcelo Ríos, Chilean tennis player
SantiagoWikipedia: Marcelo Ríos - 1958
Adrian Newey, English aerodynamicist and engineer
Stratford-upon-AvonWikipedia: Adrian Newey - 1982
Aksel Lund Svindal, Norwegian skier
LørenskogWikipedia: Aksel Lund Svindal - 1930
Jean Ferrat, French singer-songwriter and poet (died 2010)
VaucressonWikipedia: Jean Ferrat - 1947
Jean Echenoz, French author
- 1950
Raja Pervaiz Ashraf, Pakistani businessman and politician, 17th Prime Minister of Pakistan
- 1536
Yi I, Korean philosopher and scholar (died 1584)
GangneungWikipedia: Yi I - 1921
Steve Allen, American actor, singer, talk show host, and screenwriter (died 2000)
New York CityWikipedia: Steve Allen - 1933
Caroll Spinney, American puppeteer and voice actor (died 2019)
WalthamWikipedia: Caroll Spinney - 1618
Elisabeth of the Palatinate, German princess, philosopher, and Calvinist (died 1680)
HeidelbergWikipedia: Elisabeth of the Palatinate - 1984
Alex Schwazer, Italian race walker
SterzingWikipedia: Alex Schwazer - 1918
Georgios Rallis, Greek lieutenant and politician, 173rd Prime Minister of Greece (died 2006)
- 1938
Bahram Beyzai, Iranian director, screenwriter, and playwright (died 2025)
TehranWikipedia: Bahram Beyzai - 1955
Evan Bayh, American lawyer and politician, 46th Governor of Indiana
ShirkievilleWikipedia: Evan Bayh - 1983
Alexander Wang, American fashion designer
San FranciscoWikipedia: Alexander Wang - 1991
Eden Sher, American actress
Los AngelesWikipedia: Eden Sher - 1942
Gray Davis, American captain, lawyer, and politician, 37th Governor of California
The BronxWikipedia: Gray Davis - 1962
James Kottak, American drummer (died 2024)
LouisvilleWikipedia: James Kottak - 1971
Tatiana Sorokko, Russian-American model and journalist
- 1837
George Dewey, American admiral (died 1917)
MontpelierWikipedia: George Dewey - 1870
Virginia Bolten, Argentine feminist and trade unionist (died 1960)
UruguayWikipedia: Virginia Bolten - 1979
Fabián Carini, Uruguayan footballer
MontevideoWikipedia: Fabián Carini - 1687
Johann Georg Pisendel, German violinist and composer (died 1755)
CadolzburgWikipedia: Johann Georg Pisendel - 1942
Vinicio Cerezo, Guatemalan politician, 28th President of Guatemala
Guatemala CityWikipedia: Vinicio Cerezo - 1751
Clemens Maria Hofbauer, Austrian priest, missionary, and saint (died 1820)
TasoviceWikipedia: Clement Mary Hofbauer - 1785
Étienne Constantin de Gerlache, Belgian lawyer and politician, 1st Prime Minister of Belgium (died 1871)
Château of BiourgeWikipedia: Étienne Constantin de Gerlache - 1853
René Bazin, French author and academic (died 1932)
AngersWikipedia: René Bazin - 1887
Arthur Percival, English general (died 1966)
AspendenWikipedia: Arthur Percival - 1956
David Sedaris, American comedian, author, and radio host
BinghamtonWikipedia: David Sedaris - 1964
Elizabeth Kostova, American author
New LondonWikipedia: Elizabeth Kostova - 1979
Chris Daughtry, American singer-songwriter and guitarist
Roanoke RapidsWikipedia: Chris Daughtry - 1997
Tamara Zidanšek, Slovenian tennis player
PostojnaWikipedia: Tamara Zidanšek
What is celebrated on 26 December
- Boxing Day, except when December 26 is a Sunday. If it is a Sunday, Boxing Day is transferred to December 27 by Royal Proclamation. (Commonwealth of Nations), and its related observances: Family Day (Vanuatu)
- Boxing Day, except when December 26 is a Sunday. If it is a Sunday, Boxing Day is transferred to December 27 by Royal Proclamation. (Commonwealth of Nations), and its related observances: Thanksgiving (Solomon Islands)
- Christian feast day: Abadiu of Antinoe (Coptic Church)
- Christian feast day: Pope Dionysius
- Christian feast day: James the Just (Eastern Orthodox Church)
- Christian feast day: Saint Stephen (Western Church)
- Christian feast day: Synaxis of the Theotokos (Eastern Orthodox Church)
- Christian feast day: Vicenta María López i Vicuña
- Christian feast day: December 26 (Eastern Orthodox liturgics)
- Independence and Unity Day (Slovenia)
- Mauro Hamza Day (Houston, Texas)
- Mummer's Day (Padstow, Cornwall)
- The first day of Kwanzaa, celebrated until January 1 (United States)
- The first day of Junkanoo street parade, the second day is on the New Year's Day (The Bahamas)
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.