A birthday on the globe
1 March on the globe: what happened in the world on this day, and who was born
For 1 March, the English Wikipedia lists 72 events and 187 births. 28 of the events stand at their places as rays of light; 18 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 1 March through the years
The Earth on 1 March
The picture on the globe was assembled by NASA from satellite photographs taken in March 2004: the snow, the ice and the green are those of the month.
On 1 March the Sun passes straight overhead at noon along the parallel of 7.4° south. In London, the day lasts about 10 hours 55 minutes.
Beyond 83° south the Sun no longer sets; beyond 83° 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.
North America · Washington-on-the-Brazos, Texas
1836
A convention of delegates from 57 Texas communities convenes in Washington-on-the-Brazos, Texas, to deliberate independence from Mexico.
On the map: Washington-on-the-Brazos, Texas.
North America · St. Louis
1893
Electrical engineer Nikola Tesla gives the first public demonstration of radio in St. Louis, Missouri.
On the map: St. Louis.
North America · Hoover Dam
1936
Hoover Dam, straddling the Arizona–Nevada border on the Colorado River, was completed.
On the map: Hoover Dam.
Also on the day’s list of Wikipedia in Chinese.
1 March
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 Chinese and Spanish and were translated for this page.
From Wikipedia in Chinese · Sugarloaf Mountain
1565
The Portuguese soldier Estácio de Sá goes to the colony of Brazil and founds Rio de Janeiro near Sugarloaf Mountain.
On the map: Sugarloaf Mountain.
Translated from the list on Wikipedia in Chinese.
From Wikipedia in Spanish · Madrid
1712
In Madrid (Spain), the National Library opens to the public.
On the map: Madrid.
Translated from the list on Wikipedia in Spanish.
1 March
Born on 1 March#
The English Wikipedia lists 187 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 1 March
1810
Frédéric Chopin, Polish pianist and composer (died 1849)
Place of birth: Żelazowa Wola.
Born on 1 March
1994
Justin Bieber, Canadian singer-songwriter
Place of birth: London.
Born on 1 March
1892
Ryūnosuke Akutagawa, Japanese author and educator (died 1927)
Place of birth: Tokyo.
Born on 1 March
1969
Javier Bardem, Spanish actor and producer
Place of birth: Las Palmas de Gran Canaria.
Born on 1 March
1987
Kesha, American singer-songwriter and actress
Place of birth: Los Angeles.
Born in Britain and Ireland
1910
Archer John Porter Martin, English chemist and academic, Nobel Prize laureate (died 2002)
Place of birth: London.
Born in Britain and Ireland
1944
Roger Daltrey, English singer-songwriter, producer, and actor
Place of birth: Hammersmith.
Born in Britain and Ireland
1952
Martin O'Neill, Northern Irish footballer and manager
Place of birth: Kilrea.
1 March
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: 1 March 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 1 March
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.
- 509 BC
Publius Valerius Publicola celebrates the first triumph of the Roman Republic after his victory over the deposed king Lucius Tarquinius Superbus at the Battle of Silva Arsia.
Europe · Roman RepublicWikipedia: Battle of Silva Arsia - 293
Emperor Diocletian and Maximian appoint Constantius Chlorus and Galerius as Caesars. This is considered the beginning of the Tetrarchy, known as the Quattuor Principes Mundi ("Four Rulers of the World").
no place on the mapWikipedia: Diocletian - 350
Vetranio proclaims himself Caesar after being encouraged to do so by Constantina, sister of Constantius II.
no place on the mapWikipedia: Vetranio - 834
Emperor Louis the Pious is restored as sole ruler of the Frankish Empire.
Europe · FranciaWikipedia: Louis the Pious - 1290
University of Coimbra, in Portugal, is officially chartered by King Denis.
Europe · PortugalWikipedia: University of Coimbra - 1476
Forces of the Catholic Monarchs engage the combined Portuguese-Castilian armies of Afonso V and Prince John at the Battle of Toro.
Europe · Battle of ToroWikipedia: Battle of Toro - 1562
Sixty-three Huguenots are massacred in Wassy, France, marking the start of the French Wars of Religion.
Europe · Massacre of VassyWikipedia: Massacre of Vassy - 1628
Writs issued in February by Charles I of England mandate that every county in England (not just seaport towns) pay ship tax by this date.
no place on the mapWikipedia: Charles I of England - 1633
Samuel de Champlain reclaims his role as commander of New France on behalf of Cardinal Richelieu.
North America · New FranceWikipedia: Samuel de Champlain - 1692
Sarah Good, Sarah Osborne, and Tituba are brought before local magistrates in Salem Village, Massachusetts, beginning what would become known as the Salem witch trials.
North America · Danvers, MassachusettsWikipedia: Salem witch trials - 1781
The Articles of Confederation goes into effect in the United States.
no place on the mapWikipedia: Articles of Confederation - 1796
The Dutch East India Company is nationalized by the Batavian Republic.
Europe · Batavian RepublicWikipedia: Dutch East India Company - 1805
Justice Samuel Chase is acquitted at the end of his impeachment trial before the U.S. Senate.
no place on the mapWikipedia: Samuel Chase - 1811
Leaders of the Mamluk dynasty are killed by Egyptian ruler Muhammad Ali.
Africa · EgyptWikipedia: Mamluk - 1815
Napoleon returns to France from his banishment on Elba.
Europe · ElbaWikipedia: Napoleon - 1836
A convention of delegates from 57 Texas communities convenes in Washington-on-the-Brazos, Texas, to deliberate independence from Mexico.
North America · Washington-on-the-Brazos, TexasWikipedia: Convention of 1836 - 1845
United States President John Tyler signs a bill authorizing the United States to annex the Republic of Texas.
no place on the mapWikipedia: John Tyler - 1867
Nebraska is admitted as the 37th U.S. state.
North America · NebraskaWikipedia: Nebraska - 1869
The Russian chemist Dmitri Mendeleev finished his design of the first periodic table.
no place on the mapWikipedia: Dmitri Mendeleev - 1870
Marshal F. S. López dies during the Battle of Cerro Corá thus marking the end of the Paraguayan War.
Latin America · Battle of Cerro CoráWikipedia: Battle of Cerro Corá - 1871
The victorious Prussian Army parades through Paris, France, after the end of the Siege of Paris during the Franco-Prussian War.
Europe · Siege of ParisWikipedia: Siege of Paris - 1872
Yellowstone National Park is established as the world's first national park.
North America · Yellowstone National ParkWikipedia: Yellowstone National Park - 1893
Electrical engineer Nikola Tesla gives the first public demonstration of radio in St. Louis, Missouri.
North America · St. LouisWikipedia: Nikola Tesla - 1896
Battle of Adwa: An Ethiopian army defeats an outnumbered Italian force, ending the First Italo-Ethiopian War.
Africa · Battle of AdwaWikipedia: Battle of Adwa - 1896
Henri Becquerel discovers radioactive decay.
no place on the mapWikipedia: Henri Becquerel - 1901
The Australian Army is formed.
no place on the mapWikipedia: Australian Army - 1910
The deadliest avalanche in United States history buries a Great Northern Railway train in northeastern King County, Washington, killing 96 people.
North America · Wellington, WashingtonWikipedia: Wellington, Washington - 1914
China joins the Universal Postal Union.
Asia · Republic of ChinaWikipedia: Republic of China - 1917
The Zimmermann Telegram is reprinted in newspapers across the United States after the U.S. government releases its unencrypted text.
no place on the mapWikipedia: Zimmermann telegram - 1919
March 1st Movement begins in Korea under Japanese rule.
Asia · Korea under Japanese ruleWikipedia: March First Movement - 1921
Following mass protests in Petrograd demanding greater freedom in the RSFSR, the Kronstadt rebellion begins, with sailors and citizens taking up arms against the Bolsheviks.
Europe · Kronstadt rebellionWikipedia: Kronstadt rebellion - 1921
The Australian cricket team captained by Warwick Armstrong becomes the first team to complete a whitewash of The Ashes, something that would not be repeated for 86 years.
no place on the mapWikipedia: Australia national cricket team - 1932
Aviator Charles Lindbergh's 20-month-old son Charles Jr is kidnapped from his home in East Amwell, New Jersey. His body would not be found until May 12.
North America · Lindbergh kidnappingWikipedia: Lindbergh kidnapping - 1936
Hoover Dam, straddling the Arizona–Nevada border on the Colorado River, was completed.
North America · Hoover DamWikipedia: Hoover Dam - 1939
An Imperial Japanese Army ammunition dump explodes at Hirakata, Osaka, Japan, killing 94.
Asia · HirakataWikipedia: Imperial Japanese Army - 1941
World War II: Bulgaria signs the Tripartite Pact, allying itself with the Axis powers.
Europe · BulgariaWikipedia: Tripartite Pact - 1942
World War II: Japanese forces land on Java, the main island of the Dutch East Indies, at Merak and Banten Bay (Banten), Eretan Wetan (Indramayu) and Kragan (Rembang).
Asia · Port of MerakWikipedia: Java - 1944
World War II: American and Australian troops won the Battle of Sio against Japanese forces as part of the New Guinea campaign.
Oceania · Battle of SioWikipedia: World War II - 1946
The Bank of England is nationalised.
no place on the mapWikipedia: Bank of England - 1947
The International Monetary Fund begins financial operations.
no place on the mapWikipedia: International Monetary Fund - 1950
Cold War: Klaus Fuchs is convicted of spying for the Soviet Union by disclosing top secret atomic bomb data.
Asia · Soviet UnionWikipedia: Cold War - 1953
Soviet Premier Joseph Stalin suffers a stroke and collapses; he dies four days later.
no place on the mapWikipedia: Joseph Stalin - 1954
Armed Puerto Rican nationalists attack the United States Capitol building, injuring five Representatives.
North America · Washington, D.C.Wikipedia: 1954 United States Capitol shooting - 1954
Nuclear weapons testing: The Castle Bravo, a 15-megaton hydrogen bomb, is detonated on Bikini Atoll in the Pacific Ocean, resulting in the worst radioactive contamination ever caused by the United States.
Oceans · Castle BravoWikipedia: Castle Bravo - 1956
Formation of the East German Nationale Volksarmee.
Europe · East GermanyWikipedia: East Germany - 1956
The International Air Transport Association finalizes a draft of the Radiotelephony spelling alphabet for the International Civil Aviation Organization.
no place on the mapWikipedia: International Air Transport Association - 1958
Samuel Alphonsus Stritch is appointed Pro-Prefect of the Propagation of Faith and thus becomes the first U.S. member of the Roman Curia.
no place on the mapWikipedia: Samuel Stritch - 1961
Uganda becomes self-governing and holds its first elections.
Africa · UgandaWikipedia: Uganda - 1962
American Airlines Flight 1 crashes into Jamaica Bay in New York, killing 95.
North America · American Airlines Flight 1Wikipedia: American Airlines Flight 1 - 1964
Paradise Airlines Flight 901A crashes near Lake Tahoe, Nevada, killing 85.
North America · Paradise Airlines Flight 901AWikipedia: Paradise Airlines Flight 901A - 1964
Villarrica Volcano begins a strombolian eruption causing lahars that destroy half of the town of Coñaripe.
Latin America · VillarricaWikipedia: Villarrica - 1966
The Ba'ath Party takes power in Syria.
Asia · SyriaWikipedia: Ba'ath Party - 1966
Venera 3 Soviet space probe crashes on Venus becoming the first spacecraft to land on another planet's surface.
Asia · Soviet UnionWikipedia: Venera 3 - 1971
President of Pakistan Yahya Khan indefinitely postpones the pending national assembly session, precipitating massive civil disobedience in East Pakistan.
Asia · East PakistanWikipedia: President of Pakistan - 1973
Black September storms the Saudi embassy in Khartoum, Sudan, resulting in the assassination of three Western hostages.
Africa · KhartoumWikipedia: Attack on the Saudi Embassy in Khartoum - 1973
Pink Floyd's critically acclaimed album The Dark Side of the Moon was released.
no place on the mapWikipedia: Pink Floyd - 1974
Watergate scandal: Seven are indicted for their role in the Watergate break-in and charged with conspiracy to obstruct justice.
no place on the mapWikipedia: Watergate scandal - 1981
Provisional Irish Republican Army member Bobby Sands begins his hunger strike in HM Prison Maze.
Britain & Ireland · HM Prison MazeWikipedia: Provisional Irish Republican Army - 1990
Steve Jackson Games is raided by the United States Secret Service, prompting the later formation of the Electronic Frontier Foundation.
no place on the mapWikipedia: Steve Jackson Games - 1991
Uprisings against Saddam Hussein begin in Iraq, leading to the deaths of more than 25,000 people, mostly civilians.
Asia · IraqWikipedia: 1991 Iraqi uprisings - 1992
A Bosnian-Serb wedding procession was attacked in Sarajevo, resulting in what is widely considered the first casualty of the Bosnian War.
Europe · Sarajevo wedding attackWikipedia: Sarajevo wedding attack - 1992
Bosnia and Herzegovina declares its independence from Socialist Federal Republic of Yugoslavia.
no place on the mapWikipedia: Bosnia and Herzegovina - 1998
Titanic becomes the first film to gross over $1 billion worldwide.
no place on the mapWikipedia: Titanic - 2002
Space Shuttle Columbia is launched on STS-109 to service the Hubble Space Telescope.
no place on the mapWikipedia: Space Shuttle Columbia - 2002
The Envisat environmental satellite successfully launches aboard an Ariane 5 rocket to reach an orbit of 800 km (500 mi) above the Earth, which was the then-largest payload at 10.5 m long and with a diameter of 4.57 m.
no place on the mapWikipedia: Envisat - 2002
U.S. invasion of Afghanistan: Operation Anaconda begins in eastern Afghanistan.
Asia · Operation AnacondaWikipedia: Operation Anaconda - 2003
Management of the United States Customs Service and the United States Secret Service moves to the United States Department of Homeland Security.
no place on the mapWikipedia: United States Customs Service - 2005
In Roper v. Simmons, the U.S. Supreme Court rules that the execution of juveniles found guilty of any crime is unconstitutional.
North America · Supreme Court of the United StatesWikipedia: Supreme Court of the United States - 2006
English-language Wikipedia reaches its one millionth article, Jordanhill railway station.
no place on the mapWikipedia: Wikipedia - 2007
Tornadoes break out across the southern United States, killing at least 20 people, including eight at Enterprise High School.
North America · Enterprise High SchoolWikipedia: Tornado - 2008
The Armenian police clash with peaceful opposition rally protesting against allegedly fraudulent presidential elections; as a result ten people are killed.
no place on the mapWikipedia: 2008 Armenian presidential election - 2014
Thirty-five people are killed and 143 injured in a mass stabbing at Kunming Railway Station in China.
Asia · 2014 Kunming attackWikipedia: 2014 Kunming attack
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 Chinese and Spanish and were translated for this page.
- 1565
The Portuguese soldier Estácio de Sá goes to the colony of Brazil and founds Rio de Janeiro near Sugarloaf Mountain.
- 1712
In Madrid (Spain), the National Library opens to the public.
Who was born on 1 March
In order of how many Wikipedia editions have an article about each. The first 60 of 187 are shown.
- 1810
Frédéric Chopin, Polish pianist and composer (died 1849)
Żelazowa WolaWikipedia: Frédéric Chopin - 1994
Justin Bieber, Canadian singer-songwriter
LondonWikipedia: Justin Bieber - 1922
Yitzhak Rabin, Israeli general and politician, 5th Prime Minister of Israel, Nobel Prize laureate (died 1995)
JerusalemWikipedia: Yitzhak Rabin - 1892
Ryūnosuke Akutagawa, Japanese author and educator (died 1927)
- 1956
Dalia Grybauskaitė, Lithuanian politician, 8th President of Lithuania
- 1969
Javier Bardem, Spanish actor and producer
Las Palmas de Gran CanariaWikipedia: Javier Bardem - 1987
Kesha, American singer-songwriter and actress
Los AngelesWikipedia: Kesha - 1983
Lupita Nyong'o, Kenyan-Mexican actress
Mexico CityWikipedia: Lupita Nyong'o - 1927
Harry Belafonte, American singer-songwriter and actor (died 2023)
- 1954
Ron Howard, American actor, director, and producer
DuncanWikipedia: Ron Howard - 1910
David Niven, English soldier and actor (died 1983)
LondonWikipedia: David Niven - 1904
Glenn Miller, American trombonist, composer, and bandleader (died 1944)
ClarindaWikipedia: Glenn Miller - 1978
Jensen Ackles, American actor and musician
DallasWikipedia: Jensen Ackles - 1966
Zack Snyder, American director, producer, and screenwriter
Green BayWikipedia: Zack Snyder - 1989
Carlos Vela, Mexican footballer
CancunWikipedia: Carlos Vela - 1886
Oskar Kokoschka, Austrian-Swiss painter, poet, and playwright (died 1980)
PöchlarnWikipedia: Oskar Kokoschka - 1918
João Goulart, Brazilian lawyer and politician, 24th President of Brazil (died 1976)
São BorjaWikipedia: João Goulart - 1910
Archer John Porter Martin, English chemist and academic, Nobel Prize laureate (died 2002)
LondonWikipedia: Archer Martin - 1953
Carlos Queiroz, Portuguese footballer and manager
NampulaWikipedia: Carlos Queiroz - 1914
Ralph Ellison, American novelist and literary critic (died 1994)
Oklahoma CityWikipedia: Ralph Ellison - 1456
Vladislaus II of Hungary (died 1516)
- 1683
Caroline of Ansbach, British queen and regent (died 1737)
Residenz AnsbachWikipedia: Caroline of Ansbach - 1928
Jacques Rivette, French director, screenwriter, and critic (died 2016)
- 1944
Roger Daltrey, English singer-songwriter, producer, and actor
HammersmithWikipedia: Roger Daltrey - 1992
Édouard Mendy, Senegalese footballer
MontivilliersWikipedia: Édouard Mendy - 1989
Daniella Monet, American actress
West HillsWikipedia: Daniella Monet - 1993
Juan Bernat, Spanish footballer
CulleraWikipedia: Juan Bernat - 1105
Alfonso VII, king of León and Castile (died 1157)
Caldas de ReisWikipedia: Alfonso VII of León and Castile - 1947
Alan Thicke, Canadian-American actor and composer (died 2016)
Kirkland LakeWikipedia: Alan Thicke - 1952
Martin O'Neill, Northern Irish footballer and manager
- 1917
Dinah Shore, American singer and actress (died 1994)
WinchesterWikipedia: Dinah Shore - 1993
Jordan Veretout, French footballer
AncenisWikipedia: Jordan Veretout - 1924
Deke Slayton, American soldier, pilot, and astronaut (died 1993)
SpartaWikipedia: Deke Slayton - 1959
Nick Griffin, English politician
BarnetWikipedia: Nick Griffin - 1967
Aron Winter, Surinamese-Dutch footballer and manager
ParamariboWikipedia: Aron Winter - 1971
Ma Dong-seok, South Korean-American actor
- 1870
E. M. Antoniadi, Greek-French astronomer and academic (died 1944)
ConstantinopleWikipedia: E. M. Antoniadi - 1880
Lytton Strachey, British writer and critic (died 1932)
- 1929
Georgi Markov, Bulgarian journalist and author (died 1978)
- 1906
Phạm Văn Đồng, Vietnamese lieutenant and politician, 2nd Prime Minister of Vietnam (died 2000)
Quảng NgãiWikipedia: Phạm Văn Đồng - 1917
Robert Lowell, American poet (died 1977)
- 1965
Booker T, American professional wrestler and sportscaster
HoustonWikipedia: Booker T - 1973
Jack Davenport, English actor
London Borough of MertonWikipedia: Jack Davenport - 1986
Jonathan Spector, American soccer player
Arlington HeightsWikipedia: Jonathan Spector - 1876
Henri de Baillet-Latour, Belgian businessman (died 1942)
- 1899
Erich von dem Bach-Zelewski, German SS officer (died 1972)
- 1927
George O. Abell, American astronomer, academic, and skeptic (died 1983)
Los AngelesWikipedia: George O. Abell - 1943
José Ángel Iribar, Spanish footballer and manager
ZarautzWikipedia: José Ángel Iribar - 1837
William Dean Howells, American novelist, playwright, and critic (died 1920)
Martins FerryWikipedia: William Dean Howells - 1973
Chris Webber, American basketball player and sportscaster
DetroitWikipedia: Chris Webber - 1842
Nikolaos Gyzis, Greek painter and academic (died 1901)
- 1896
Dimitri Mitropoulos, Greek pianist, composer, and conductor (died 1960)
- 1985
Andreas Ottl, German footballer
MunichWikipedia: Andreas Ottl - 1812
Augustus Pugin, English architect, co-designed the Palace of Westminster (died 1852)
BloomsburyWikipedia: Augustus Pugin - 1934
Joan Hackett, American actress (died 1983)
East HarlemWikipedia: Joan Hackett - 1953
M. K. Stalin, Indian Tamil politician, 8th and incumbent Chief Minister of Tamil Nadu
ChennaiWikipedia: M. K. Stalin - 1958
Bertrand Piccard, Swiss psychiatrist and aviator
LausanneWikipedia: Bertrand Piccard - 1986
Big E, American professional wrestler
- 1994
Maximilian Philipp, German footballer
- 1945
Dirk Benedict, American actor and director
HelenaWikipedia: Dirk Benedict
What is celebrated on 1 March
- Beer Day, marked the end of beer prohibition in 1989 (Iceland)
- Chalandamarz, traditional Alpine spring festival (Switzerland)
- Christian feast day: Agnes Tsao Kou Ying (one of the Martyr Saints of China)
- Christian feast day: Albin
- Christian feast day: Eudokia of Heliopolis
- Christian feast day: Pope Felix III
- Christian feast day: Leoluca
- Christian feast day: Luperculus
- Christian feast day: Monan
- Christian feast day: Rudesind
- Christian feast day: Saint David's Day or Dydd Gŵyl Dewi (Wales and Welsh communities)
- Christian feast day: Suitbert
- Christian feast day: March 1 (Eastern Orthodox liturgics)
- Commemoration of Mustafa Barzani's Death (Iraqi Kurdistan)
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.