A birthday on the globe
21 November on the globe: what happened in the world on this day, and who was born
For 21 November, the English Wikipedia lists 70 events and 208 births. 33 of the events stand at their places as rays of light; 11 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 21 November through the years
The Earth on 21 November
The picture on the globe was assembled by NASA from satellite photographs taken in November 2004: the snow, the ice and the green are those of the month.
On 21 November the Sun passes straight overhead at noon along the parallel of 19.9° south. In London, the day lasts about 8 hours 35 minutes.
Beyond 70° south the Sun no longer sets; beyond 70° 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 · Piltdown Man
1953
The Natural History Museum, London announces that the "Piltdown Man" skull, initially believed to be one of the most important fossilized hominid skulls ever found, is a hoax.
On the map: Piltdown Man.
Also on the day’s list of Wikipedia in Spanish and Chinese.
Asia · Temple in Jerusalem
164 BC
Judas Maccabeus, son of Mattathias of the Hasmonean family, rededicates the Temple in Jerusalem, an event that is commemorated each year by the festival of Hanukkah. (25 Kislev 3597 in the Hebrew calendar.)
On the map: Temple in Jerusalem.
Also on the day’s list of Wikipedia in Spanish and Chinese.
Latin America · Punta Arenas
1851
Mutineers take control of the Chilean penal colony of Punta Arenas in the Strait of Magellan.
On the map: Punta Arenas.
North America · La Ronde
1961
"La Ronde" opens in Honolulu, the first revolving restaurant in the United States.
On the map: La Ronde.
North America · University of California, Los Angeles
1969
The first permanent ARPANET link is established between UCLA and SRI.
On the map: University of California, Los Angeles.
Also on the day’s list of Wikipedia in Spanish.
21 November
Born on 21 November#
The English Wikipedia lists 208 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 21 November
1694
Voltaire, French writer and philosopher (died 1778)
Place of birth: Paris.
Born on 21 November
1854
Pope Benedict XV (died 1922)
Place of birth: Pegli.
Born on 21 November
1903
Isaac Bashevis Singer, Polish-American novelist and short story writer, Nobel Prize laureate (died 1991)
Place of birth: Radzymin.
Born on 21 November
1898
René Magritte, Belgian painter (died 1967)
Place of birth: Lessines.
Born in Britain and Ireland
1924
Christopher Tolkien, English author and academic (died 2020)
Place of birth: Leeds.
Born in Britain and Ireland
1963
Nicollette Sheridan, English actress
Place of birth: Worthing.
21 November
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: 21 November 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 21 November
The list is the English Wikipedia’s, in its own wording, as it stood in October 2026. 26 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.
- 164 BC
Judas Maccabeus, son of Mattathias of the Hasmonean family, rededicates the Temple in Jerusalem, an event that is commemorated each year by the festival of Hanukkah. (25 Kislev 3597 in the Hebrew calendar.)
Asia · Temple in JerusalemWikipedia: Temple in Jerusalem - 235
Pope Anterus succeeds Pontian as the nineteenth pope.
no place on the mapWikipedia: Pope Anterus - 1386
Timur of Samarkand captures and sacks the Georgian capital of Tbilisi, taking King Bagrat V of Georgia captive.
Asia · TbilisiWikipedia: Timurid invasions of Georgia - 1620
Plymouth Colony settlers sign the Mayflower Compact (November 11, O.S.)
no place on the mapWikipedia: Plymouth Colony - 1676
The Danish astronomer Ole Rømer presents the first quantitative measurements of the speed of light.
no place on the mapWikipedia: Astronomer - 1783
In Paris, Jean-François Pilâtre de Rozier and François Laurent d'Arlandes make the first untethered hot air balloon flight.
no place on the mapWikipedia: Jean-François Pilâtre de Rozier - 1789
North Carolina ratifies the United States Constitution and is admitted as the 12th U.S. state.
North America · North CarolinaWikipedia: North Carolina - 1851
Mutineers take control of the Chilean penal colony of Punta Arenas in the Strait of Magellan.
Latin America · Punta ArenasWikipedia: Mutiny of Cambiazo - 1861
American Civil War: Confederate President Jefferson Davis appoints Judah Benjamin Secretary of War.
no place on the mapWikipedia: American Civil War - 1877
Thomas Edison announces his invention of the phonograph, a machine that can record and play sound.
no place on the mapWikipedia: Thomas Edison - 1894
Port Arthur, China, falls to the Japanese, a decisive victory of the First Sino-Japanese War; Japanese troops are accused of massacring the remaining inhabitants.
Asia · Battle of LüshunkouWikipedia: Battle of Lüshunkou - 1900
Claude Monet's paintings shown at Gallery Durand-Ruel in Paris.
no place on the mapWikipedia: Claude Monet - 1902
The Philadelphia Football Athletics defeat the Kanaweola Athletic Club of Elmira, New York, 39–0, in the first-ever professional American football night game.
North America · Elmira, New YorkWikipedia: Philadelphia Athletics - 1905
Albert Einstein's paper that leads to the mass–energy equivalence formula, E = mc², is published in the journal Annalen der Physik.
no place on the mapWikipedia: Albert Einstein - 1910
Sailors on board Brazil's warships including the Minas Gerais, São Paulo, and Bahia, violently rebel in what is now known as the Revolta da Chibata (Revolt of the Lash).
no place on the mapWikipedia: Brazilian battleship Minas Geraes - 1916
World War I: Mines from SM U-73 sink HMHS Britannic, the largest ship lost in the war.
no place on the mapWikipedia: World War I - 1918
A pogrom takes place in Lwów (now Lviv); over three days, at least 50 Jews and 270 Ukrainian Christians are killed by Poles.
Europe · LvivWikipedia: Lwów pogrom - 1918
The Flag of Estonia, previously used by pro-independence activists, is formally adopted as the national flag of the Republic of Estonia.
Europe · EstoniaWikipedia: Flag of Estonia - 1918
The Parliament (Qualification of Women) Act 1918 is passed, allowing women to stand for Parliament in the UK.
no place on the mapWikipedia: Parliament (Qualification of Women) Act 1918 - 1920
Irish War of Independence: On "Bloody Sunday" in Dublin, the Irish Republican Army (IRA) assassinated a group of British Intelligence agents, and British forces killed 14 civilians at a Gaelic football match at Croke Park.
Britain & Ireland · Croke ParkWikipedia: Bloody Sunday - 1922
Rebecca Latimer Felton of Georgia takes the oath of office, becoming the first female United States Senator.
North America · GeorgiaWikipedia: Rebecca Latimer Felton - 1927
Columbine Mine massacre: Striking coal miners are allegedly attacked with machine guns by a detachment of Colorado state police dressed in civilian clothes.
North America · Columbine Mine massacreWikipedia: Columbine Mine massacre - 1942
The completion of the Alaska Highway (also known as the Alcan Highway) is celebrated (however, the highway is not usable by standard road vehicles until 1943).
no place on the mapWikipedia: Alaska Highway - 1944
World War II: American submarine USS Sealion sinks the Japanese battleship Kongō and Japanese destroyer Urakaze in the Formosa Strait.
no place on the mapWikipedia: World War II - 1945
Manzanar, a camp in California for the internment of Japanese Americans during World War II, was closed.
North America · ManzanarWikipedia: Internment of Japanese Americans - 1945
The United Auto Workers strike 92 General Motors plants in 50 cities to back up worker demands for a 30-percent raise.
no place on the mapWikipedia: 1945–1946 General Motors strike - 1950
Two Canadian National Railway trains collide in northeastern British Columbia in the Canoe River train crash; the death toll is 21, with 17 of them Canadian troops bound for Korea.
North America · British ColumbiaWikipedia: Canoe River train crash - 1953
The Natural History Museum, London announces that the "Piltdown Man" skull, initially believed to be one of the most important fossilized hominid skulls ever found, is a hoax.
Britain & Ireland · Piltdown ManWikipedia: Natural History Museum, London - 1954
People's Action Party, an eventual dominative political party in Singapore, was established.
Asia · SingaporeWikipedia: People's Action Party - 1959
American disc jockey Alan Freed, who had popularized the term "rock and roll" and music of that style, is fired from WABC radio over allegations he had participated in the payola scandal.
North America · WABCWikipedia: Alan Freed - 1961
"La Ronde" opens in Honolulu, the first revolving restaurant in the United States.
North America · La RondeWikipedia: La Ronde - 1962
The Chinese People's Liberation Army declares a unilateral ceasefire in the Sino-Indian War.
no place on the mapWikipedia: Sino-Indian War - 1964
Second Vatican Council: The third session of the Roman Catholic Church's ecumenical council closes.
no place on the mapWikipedia: Second Vatican Council - 1964
The Verrazzano–Narrows Bridge opens to traffic. At the time it is the world's longest bridge span.
no place on the mapWikipedia: Verrazzano–Narrows Bridge - 1967
Vietnam War: American General William Westmoreland tells news reporters: "I am absolutely certain that whereas in 1965 the enemy was winning, today he is certainly losing."
no place on the mapWikipedia: Vietnam War - 1969
The first permanent ARPANET link is established between UCLA and SRI.
North America · University of California, Los AngelesWikipedia: University of California, Los Angeles - 1969
U.S. President Richard Nixon and Japanese Premier Eisaku Satō agree on the return of Okinawa to Japanese control in 1972. The U.S. retains rights to bases on the island, but these are to be nuclear-free.
Asia · Okinawa PrefectureWikipedia: Richard Nixon - 1970
Vietnam War: Operation Ivory Coast: A joint United States Air Force and Army team raids the Sơn Tây prisoner-of-war camp in an attempt to free American prisoners of war thought to be held there.
Asia · Operation Ivory CoastWikipedia: Operation Ivory Coast - 1971
Indian troops, partly aided by Mukti Bahini (Bengali guerrillas), defeat the Pakistan army in the Battle of Garibpur.
no place on the mapWikipedia: Mukti Bahini - 1972
Voters in South Korea overwhelmingly approve a new constitution, giving legitimacy to Park Chung Hee and the Fourth Republic.
Asia · Fourth Republic of KoreaWikipedia: Park Chung Hee - 1974
The Birmingham pub bombings kill 21 people. The Birmingham Six are sentenced to life in prison for the crime but are later exonerated.
Britain & Ireland · Birmingham pub bombingsWikipedia: Birmingham pub bombings - 1977
Minister of Internal Affairs Allan Highet announces that the national anthems of New Zealand shall be the traditional anthem "God Save the Queen" and "God Defend New Zealand".
no place on the mapWikipedia: Minister of Internal Affairs - 1979
The United States Embassy in Islamabad, Pakistan, is attacked by a mob and set on fire, killing four.
Asia · 1979 U.S. embassy burning in IslamabadWikipedia: 1979 U.S. embassy burning in Islamabad - 1980
A deadly fire breaks out at the MGM Grand Hotel in Paradise, Nevada (now Bally's Las Vegas). Eighty-five people are killed and more than 650 are injured in the worst disaster in Nevada history.
North America · MGM Grand fireWikipedia: MGM Grand fire - 1985
United States Navy intelligence analyst Jonathan Pollard is arrested for spying after being caught giving Israel classified information on Arab nations. He is subsequently sentenced to life in prison.
Asia · IsraelWikipedia: Israel - 1986
National Security Council member Oliver North and his secretary start to shred documents allegedly implicating them in the Iran–Contra affair.
no place on the mapWikipedia: Oliver North - 1989
Aeroflot Flight 37577 crashes on approach to Sovetsky Airport, killing 32.
Asia · Sovetsky AirportWikipedia: Sovetsky Airport - 1990
Bangkok Airways Flight 125 crashes on approach to Samui Airport, killing 38.
Asia · Bangkok Airways Flight 125Wikipedia: Bangkok Airways Flight 125 - 1992
A major tornado strikes the Houston, Texas area during the afternoon. Over the next two days the largest tornado outbreak ever to occur in the US during November spawns over 100 tornadoes.
North America · HoustonWikipedia: Tornado - 1995
The Dayton Agreement is initialed at the Wright-Patterson Air Force Base, near Dayton, Ohio, ending three and a half years of war in Bosnia and Herzegovina.
North America · Dayton AgreementWikipedia: Dayton Agreement - 1996
Humberto Vidal explosion: Thirty-three people die when a Humberto Vidal shoe shop in Río Piedras, Puerto Rico explodes.
Latin America · Humberto Vidal explosionWikipedia: Humberto Vidal explosion - 1998
Finnish satanist Jarno Elg kills a 23-year-old man and performs a ritual-like cutting and eating of body parts in Hyvinkää, Finland.
Europe · HyvinkääWikipedia: Satanism - 2002
Arturo Guzmán Decena, founder of Los Zetas and high-member of the Gulf Cartel, is killed in a shoot-out with the Mexican Army and the police.
no place on the mapWikipedia: Arturo Guzmán Decena - 2002
NATO invites Bulgaria, Estonia, Latvia, Lithuania, Romania, Slovakia and Slovenia to become members.
no place on the mapWikipedia: NATO - 2004
China Eastern Airlines Flight 5210 crashes after takeoff from Baotou Donghe Airport, killing 55.
Asia · China Eastern Airlines Flight 5210Wikipedia: China Eastern Airlines Flight 5210 - 2004
Dominica is hit by the most destructive earthquake in its history. The northern half of the island sustains the most damage, especially the town of Portsmouth. In neighboring Guadeloupe, one person is killed.
Latin America · Portsmouth, DominicaWikipedia: Dominica - 2004
The Paris Club agrees to write off 80% (up to $100 billion) of Iraq's external debt.
Asia · IraqWikipedia: Paris Club - 2004
The second round of the Ukrainian presidential election is held, giving rise to massive protests and controversy over the election's integrity.
Europe · UkraineWikipedia: 2004 Ukrainian presidential election - 2006
Anti-Syrian Lebanese politician and government minister Pierre Gemayel is assassinated in suburban Beirut.
Asia · BeirutWikipedia: Pierre Amine Gemayel - 2009
A mine explosion in Heilongjiang, China kills 108.
Asia · 2009 Heilongjiang mine explosionWikipedia: 2009 Heilongjiang mine explosion - 2012
At least 28 are wounded after a bomb is thrown onto a bus in Tel Aviv.
Asia · 2012 Tel Aviv bus bombingWikipedia: 2012 Tel Aviv bus bombing - 2013
Fifty-four people are killed when the roof of a shopping center collapses in Riga, Latvia.
Europe · Zolitūde shopping centre roof collapseWikipedia: Zolitūde shopping centre roof collapse - 2013
Massive protests start in Ukraine after President Viktor Yanukovych suspended signing the Ukraine–European Union Association Agreement.
Europe · EuromaidanWikipedia: Euromaidan - 2014
A stampede in Kwekwe, Zimbabwe caused by the police firing tear gas kills at least eleven people and injures 40 others.
no place on the mapWikipedia: Kwekwe stadium stampede - 2015
The government of Belgium imposes a security lockdown on Brussels, including the closure of shops, schools, and public transportation, due to potential terrorist attacks.
Europe · BrusselsWikipedia: 2015 Brussels lockdown - 2017
Robert Mugabe formally resigns as President of Zimbabwe, after thirty-seven years in office.
Africa · ZimbabweWikipedia: Robert Mugabe - 2019
Israeli Prime Minister Benjamin Netanyahu is indicted on charges of bribery, fraud, and breach of trust.
no place on the mapWikipedia: Benjamin Netanyahu - 2019
Tesla launches the SUV Cybertruck. A gaffe occurs during the launch event when its "unbreakable" windows shatter during demonstration.
no place on the mapWikipedia: Tesla, Inc. - 2021
An SUV plows through a Christmas parade in Waukesha, Wisconsin, killing six and injuring 62.
North America · Waukesha Christmas parade attackWikipedia: Waukesha Christmas parade attack - 2022
A magnitude 5.6 earthquake on the Indonesian island of Java kills between 335 and 602 people.
Asia · 2022 West Java earthquakeWikipedia: 2022 West Java earthquake
Who was born on 21 November
In order of how many Wikipedia editions have an article about each. The first 60 of 208 are shown.
- 1694
Voltaire, French writer and philosopher (died 1778)
ParisWikipedia: Voltaire - 1854
Pope Benedict XV (died 1922)
- 1903
Isaac Bashevis Singer, Polish-American novelist and short story writer, Nobel Prize laureate (died 1991)
RadzyminWikipedia: Isaac Bashevis Singer - 1965
Björk, Icelandic singer-songwriter
ReykjavíkWikipedia: Björk - 1898
René Magritte, Belgian painter (died 1967)
LessinesWikipedia: René Magritte - 1945
Goldie Hawn, American actress, singer, and producer
Washington, D.C.Wikipedia: Goldie Hawn - 1768
Friedrich Schleiermacher, German theologian, philosopher, and scholar (died 1834)
- 1985
Jesús Navas, Spanish footballer
Los Palacios y VillafrancaWikipedia: Jesús Navas - 1985
Carly Rae Jepsen, Canadian singer-songwriter and actress
MissionWikipedia: Carly Rae Jepsen - 1818
Lewis H. Morgan, American lawyer, anthropologist, and theorist (died 1881)
- 1840
Victoria, Princess Royal of England (died 1901)
- 1870
Alexander Berkman, Lithuanian-American activist and author (died 1936)
VilniusWikipedia: Alexander Berkman - 1902
Mikhail Suslov, Russian soldier, economist, and politician (died 1982)
ShakhovskoyeWikipedia: Mikhail Suslov - 1979
Vincenzo Iaquinta, Italian footballer
CrotoneWikipedia: Vincenzo Iaquinta - 1994
Saúl Ñíguez, Spanish footballer
ElcheWikipedia: Saúl - 1948
Michel Suleiman, Lebanese general and politician, 16th President of Lebanon
- 1924
Christopher Tolkien, English author and academic (died 2020)
- 1944
Harold Ramis, American actor, director, producer, and screenwriter (died 2014)
ChicagoWikipedia: Harold Ramis - 1989
Fabian Delph, English footballer
- 1852
Francisco Tárrega, Spanish guitarist and composer (died 1909)
VillarrealWikipedia: Francisco Tárrega - 1984
Jena Malone, American actress and singer
SparksWikipedia: Jena Malone - 1963
Nicollette Sheridan, English actress
WorthingWikipedia: Nicollette Sheridan - 1924
Milka Planinc, Yugoslav politician, 28th Prime Minister of Yugoslavia (died 2010)
- 1944
Dick Durbin, American lawyer and politician
East St. LouisWikipedia: Dick Durbin - 1991
Almaz Ayana, Ethiopian sprinter
Benishangul-Gumuz RegionWikipedia: Almaz Ayana - 1853
Hussein Kamel of Egypt (died 1917)
- 1904
Coleman Hawkins, American saxophonist and clarinet player (died 1969)
St. JosephWikipedia: Coleman Hawkins - 1956
Cherry Jones, American actress
- 1991
Lewis Dunk, English footballer
BrightonWikipedia: Lewis Dunk - 1932
Beryl Bainbridge, English author and screenwriter (died 2010)
LiverpoolWikipedia: Beryl Bainbridge - 2004
Rico Lewis, English footballer
- 1878
Gustav Radbruch, German lawyer and politician, German Minister of Justice (died 1949)
- 1967
Ken Block, American race car driver (died 2023)
Long BeachWikipedia: Ken Block - 1943
Jacques Laffite, French race car driver
- 2000
Isabel May, American actress
Santa MonicaWikipedia: Isabel May - 1917
Chung Il-kwon, Korean politician, diplomat, and soldier (died 1994)
UssuriyskWikipedia: Chung Il-kwon - 1940
Natalia Makarova, Russian ballerina, choreographer, and actress
Saint PetersburgWikipedia: Natalia Makarova - 1998
Vangelis Pavlidis, Greek footballer
ThessalonikiWikipedia: Vangelis Pavlidis - 1933
Henry Hartsfield, American colonel, pilot, and astronaut (died 2014)
BirminghamWikipedia: Henry Hartsfield - 1941
Juliet Mills, English-American actress
LondonWikipedia: Juliet Mills - 1834
Hetty Green, American businesswoman and financier (died 1916)
New BedfordWikipedia: Hetty Green - 1866
Sigbjørn Obstfelder, Norwegian poet and author (died 1900)
StavangerWikipedia: Sigbjørn Obstfelder - 1925
Veljko Kadijević, Croatian general and politician, 5th Federal Secretary of People's Defence (died 2014)
Glavina DonjaWikipedia: Veljko Kadijević - 1966
Evgeny Bareev, Russian chess player and coach
YemanzhelinskWikipedia: Evgeny Bareev - 1969
Ken Griffey Jr., American baseball player and actor
- 1975
Jimmi Simpson, American actor
HackettstownWikipedia: Jimmi Simpson - 1929
Marilyn French, American author and academic (died 2009)
BrooklynWikipedia: Marilyn French - 1937
Marlo Thomas, American actress, producer, and activist
DetroitWikipedia: Marlo Thomas - 1997
Reo Hatate, Japanese footballer
SuzukaWikipedia: Reo Hatate - 1886
Harold Nicolson, English author and politician (died 1968)
- 1912
Eleanor Powell, American actress and dancer (died 1982)
SpringfieldWikipedia: Eleanor Powell - 1937
Ingrid Pitt, Polish-English actress (died 2010)
WarsawWikipedia: Ingrid Pitt - 1981
Jonny Magallón, Mexican footballer
OcotlánWikipedia: Jonny Magallón - 1983
Nikki Bella, American wrestler and television personality
San DiegoWikipedia: Nikki Bella - 1984
Álvaro Bautista, Spanish motorcycle racer
Talavera de la ReinaWikipedia: Álvaro Bautista - 1729
Josiah Bartlett, American physician and politician, 6th Governor of New Hampshire (died 1795)
AmesburyWikipedia: Josiah Bartlett - 1876
Olav Duun, Norwegian author and educator (died 1939)
- 1920
Stan Musial, American baseball player and manager (died 2013)
DonoraWikipedia: Stan Musial - 1926
William Wakefield Baum, American cardinal (died 2015)
- 1944
Earl Monroe, American basketball player
PhiladelphiaWikipedia: Earl Monroe
What is celebrated on 21 November
- Armed Forces Day (Bangladesh)
- Christian feast days: Amelberga of Susteren
- Christian feast days: Digain
- Christian feast days: Maurus of Parentium
- Christian feast days: Pope Gelasius I
- Christian feast days: Franciszka Siedliska
- Christian feast days: Presentation of the Blessed Virgin Mary
- Christian feast days: Rufus of Rome (no. 7 in list)
- Christian feast days: William Byrd, John Merbecke and Thomas Tallis (Episcopal Church (USA))
- Christian feast days: November 21 (Eastern Orthodox liturgics)
- World Television Day (United Nations observance)
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.