A birthday on the globe
30 August on the globe: what happened in the world on this day, and who was born
For 30 August, the English Wikipedia lists 62 events and 232 births. 35 of the events stand at their places as rays of light; eight 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 30 August through the years
The Earth on 30 August
The picture on the globe was assembled by NASA from satellite photographs taken in August 2004: the snow, the ice and the green are those of the month.
On 30 August the Sun passes straight overhead at noon along the parallel of 9.0° north. In London, the day lasts about 13 hours 45 minutes.
Beyond 81° north the Sun no longer sets; beyond 81° south it no longer rises.
The line between day and night is tilted on the globe exactly as on this day of the year. On the dark side you can see the lights of towns.
Britain & Ireland · Stirling Castle
1594
King James VI of Scotland holds a masque at the baptism of Prince Henry at Stirling Castle.
On the map: Stirling Castle.
Europe · Belvedere
1940
The Second Vienna Award reassigns the territory of Northern Transylvania from Romania to Hungary.
On the map: Belvedere.
Also on the day’s list of Wikipedia in Romanian.
Asia · Edo Castle
1590
Tokugawa Ieyasu enters Edo Castle. (Traditional Japanese date: August 1, 1590)
On the map: Edo Castle.
Also on the day’s list of Wikipedia in Chinese.
Asia · Dissolution of the Soviet Union
1991
Dissolution of the Soviet Union: Azerbaijan declares independence from Soviet Union.
On the map: the coordinates Wikidata gives for the article “Dissolution of the Soviet Union”.
Oceania · Melbourne
1835
Australia: Melbourne, Victoria is founded.
On the map: Melbourne.
Also on the day’s list of Wikipedia in Chinese.
North America · Houston
1836
The city of Houston is founded by Augustus Chapman Allen and John Kirby Allen.
On the map: Houston.
North America · Burgess Shale
1909
Burgess Shale fossils are discovered by Charles Doolittle Walcott.
On the map: Burgess Shale.
Also on the day’s list of Wikipedia in Chinese.
North America · Supreme Court of the United States
1967
Thurgood Marshall is confirmed as the first African American Justice of the Supreme Court of the United States.
On the map: Supreme Court of the United States.
Oceans · Elephant Island
1916
Ernest Shackleton completes the rescue of all of his men stranded on Elephant Island in Antarctica.
On the map: Elephant Island.
30 August
What the other Wikipedias remember#
For these years the English list has nothing on this day. The events below come from the same day’s lists on Wikipedia in Spanish and were translated for this page.
From Wikipedia in Spanish · Casablanca
1993
In Casablanca (Morocco), King Hassan II inaugurates the Hassan II Mosque, the largest after the one in Mecca.
On the map: Casablanca.
Translated from the list on Wikipedia in Spanish.
30 August
Born on 30 August#
The English Wikipedia lists 232 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 30 August
1871
Ernest Rutherford, New Zealand-English physicist and chemist, Nobel Prize laureate (died 1937)
Place of birth: Spring Grove.
Born on 30 August
1930
Warren Buffett, American businessman and philanthropist
Place of birth: Omaha.
Born on 30 August
1797
Mary Shelley, English novelist and playwright (died 1851)
Place of birth: Somers Town.
Born on 30 August
1972
Cameron Diaz, American model, actress, and producer
Place of birth: San Diego.
Born on 30 August
1852
Jacobus Henricus van 't Hoff, Dutch chemist and academic, Nobel Prize laureate (died 1911)
Place of birth: Rotterdam.
Born in Britain and Ireland
1913
Richard Stone, English economist and statistician, Nobel Prize laureate (died 1991)
Place of birth: London.
Born in Britain and Ireland
1950
Antony Gormley, English sculptor and academic
Place of birth: London.
Born in Britain and Ireland
1950
Dana Rosemary Scallon, Irish singer and activist
Place of birth: London.
30 August
Number one in the charts that week
At the cinema
An animal recorded that day
The record can be seen in GBIF, which brings together wildlife records from around the world.
All your birthdays
The weather that day
Data: Met Office Hadley Centre (HadCET); NOAA (GHCN-Daily, Mauna Loa).
Above the Earth
Sources: Jonathan McDowell, GCAT (launches); GFZ Potsdam (Kp index). Days are counted in Universal Time.
Football that day
International matches played that day:
Source: the “International football results” dataset kept by Mart Jürisoo (CC0).
Also that day
The earthquake’s page at the USGS
Source: the USGS catalogue. The day is counted in Universal Time (UTC).
In those days
Make a link for someone
Type the name, pick the day and the year of birth. The link opens straight on their day, with their name in the greeting.
The link carries the name, date and place typed here; anyone who gets it can see them.
Put another birthday beside it
Your mother’s, your child’s, a friend’s: the two days appear side by side.
Below: 30 August through the years.
The whole globe of the day
Drag the globe to turn it. Touch a ray or a point to read what happened there.
Everything Wikipedia lists for 30 August
The list is the English Wikipedia’s, in its own wording, as it stood in October 2026. 19 events have no place on the map: the sentence links to no place with coordinates, only to places too wide to mark, or to several countries.
- 70
Titus ends the siege of Jerusalem after destroying Herod's Temple.
Asia · Siege of JerusalemWikipedia: Siege of Jerusalem - 1057
Elderly Byzantine Emperor Michael VI Bringas abdicates after just one year on the throne.
no place on the mapWikipedia: List of Byzantine emperors - 1060
The Mirdasids defeat the Fatimid Caliphate at the Battle of al-Funaydiq, signalling the definitive loss of Aleppo for the Fatimids.
Asia · Battle of al-FunaydiqWikipedia: Battle of al-Funaydiq - 1282
Peter III of Aragon lands at Trapani to intervene in the War of the Sicilian Vespers.
Europe · TrapaniWikipedia: War of the Sicilian Vespers - 1363
The five-week Battle of Lake Poyang begins, in which the forces of two Chinese rebel leaders (Chen Youliang and Zhu Yuanzhang) meet to decide who will supplant the Yuan dynasty.
Asia · Battle of Lake PoyangWikipedia: Battle of Lake Poyang - 1464
Paul II succeeds Pius II as pope of the Catholic Church.
no place on the mapWikipedia: Pope Paul II - 1535
With the papal bull Eius qui immobilis, Pope Paul III excommunicates King Henry VIII of England from the Catholic Church for approving the Acts of Supremacy, although the bull is likely never published.
no place on the mapWikipedia: Papal bull - 1574
Guru Ram Das becomes the Fourth Sikh Guru/Master.
no place on the mapWikipedia: Guru Ram Das - 1590
Tokugawa Ieyasu enters Edo Castle. (Traditional Japanese date: August 1, 1590)
Asia · Edo CastleWikipedia: Edo Castle - 1594
King James VI of Scotland holds a masque at the baptism of Prince Henry at Stirling Castle.
Britain & Ireland · Stirling CastleWikipedia: Stirling Castle - 1721
The Great Northern War between Sweden and Russia ends in the Treaty of Nystad.
Europe · UusikaupunkiWikipedia: Treaty of Nystad - 1727
Anne, eldest daughter of King George II of Great Britain, is given the title Princess Royal.
no place on the mapWikipedia: Anne, Princess Royal and Princess of Orange - 1757
Battle of Gross-Jägersdorf: Russian force under Field Marshal Stepan Fyodorovich Apraksin beats a smaller Prussian force commanded by Field Marshal Hans von Lehwaldt, during the Seven Years' War.
Europe · Battle of Gross-JägersdorfWikipedia: Battle of Gross-Jägersdorf - 1791
HMS Pandora sinks after having run aground on the outer Great Barrier Reef the previous day.
Oceania · Great Barrier ReefWikipedia: Great Barrier Reef - 1799
The entire Dutch fleet is captured by British forces under the command of Sir Ralph Abercromby and Admiral Sir Charles Mitchell during the War of the Second Coalition.
Europe · Vlieter incidentWikipedia: Vlieter incident - 1800
Gabriel Prosser postpones a planned slave rebellion in Richmond, Virginia, but is arrested before he can make it happen.
North America · Richmond, VirginiaWikipedia: Gabriel's Rebellion - 1808
The convention of Cintra allows the defeated French troops to be transported out of Iberia on British ships, including their loot.
Europe · Palace of QueluzWikipedia: Convention of Cintra - 1813
Creek War: Fort Mims massacre: Creek "Red Sticks" kill over 500 settlers (including over 250 armed militia) in Fort Mims, north of Mobile, Alabama.
North America · Fort Mims massacreWikipedia: Fort Mims massacre - 1813
First Battle of Kulm: French forces are defeated by an Austrian-Prussian-Russian alliance.
Europe · Battle of KulmWikipedia: Battle of Kulm - 1835
Australia: Melbourne, Victoria is founded.
Oceania · MelbourneWikipedia: Melbourne - 1836
The city of Houston is founded by Augustus Chapman Allen and John Kirby Allen.
North America · HoustonWikipedia: Houston - 1862
American Civil War: Battle of Richmond: Confederates under Edmund Kirby Smith rout Union forces under General William "Bull" Nelson.
North America · Battle of RichmondWikipedia: American Civil War - 1873
Austrian explorers Julius von Payer and Karl Weyprecht discover the archipelago of Franz Josef Land in the Arctic Sea.
Europe · Franz Josef LandWikipedia: Julius von Payer - 1896
Philippine Revolution: After Spanish victory in the Battle of San Juan del Monte, eight provinces in the Philippines are declared under martial law by the Spanish Governor-General Ramón Blanco y Erenas.
Asia · Battle of San Juan del MonteWikipedia: Battle of San Juan del Monte - 1909
Burgess Shale fossils are discovered by Charles Doolittle Walcott.
North America · Burgess ShaleWikipedia: Burgess Shale - 1914
World War I: Germans defeat the Russians in the Battle of Tannenberg.
Europe · Battle of TannenbergWikipedia: World War I - 1916
Ernest Shackleton completes the rescue of all of his men stranded on Elephant Island in Antarctica.
Oceans · Elephant IslandWikipedia: Ernest Shackleton - 1917
Vietnamese prison guards led by Trịnh Văn Cấn mutiny at the Thái Nguyên penitentiary against local French authority.
no place on the mapWikipedia: Thái Nguyên uprising - 1918
Fanni Kaplan shoots and seriously injures Bolshevik leader Vladimir Lenin, which, along with the assassination of Bolshevik senior official Moisei Uritsky days earlier, prompts the decree for Red Terror.
no place on the mapWikipedia: Fanny Kaplan - 1922
Battle of Dumlupınar: The final battle in the Greco-Turkish War (Turkish War of Independence).
Asia · AnatoliaWikipedia: Turkish War of Independence - 1936
The RMS Queen Mary wins the Blue Riband by setting the fastest transatlantic crossing.
no place on the mapWikipedia: RMS Queen Mary - 1940
The Second Vienna Award reassigns the territory of Northern Transylvania from Romania to Hungary.
Europe · BelvedereWikipedia: Second Vienna Award - 1941
The Tighina Agreement, a treaty regarding administration issues of the Transnistria Governorate, is signed between Germany and Romania.
Europe · Nazi GermanyWikipedia: Tighina Agreement - 1942
British and Australian prisoners of war in Singapore revolted against their Japanese captors, who required them to pledge not to escape.
Asia · Selarang Barracks incidentWikipedia: Selarang Barracks incident - 1942
World War II: The Battle of Alam el Halfa begins.
Africa · Battle of Alam el HalfaWikipedia: Battle of Alam el Halfa - 1945
The Allied Control Council, governing Germany after World War II, comes into being.
no place on the mapWikipedia: Allied Control Council - 1945
The Japanese occupation of Hong Kong comes to an end.
Asia · Japanese occupation of Hong KongWikipedia: Japanese occupation of Hong Kong - 1945
The Supreme Commander of the Allied Forces, General Douglas MacArthur, lands at Atsugi Air Force Base.
Asia · Naval Air Facility AtsugiWikipedia: Commander-in-chief - 1959
South Vietnamese opposition figure Phan Quang Dan is elected to the National Assembly despite soldiers being bussed in to vote for President Ngo Dinh Diem's candidate.
no place on the mapWikipedia: 1959 South Vietnamese parliamentary election - 1959
Writer and politician Abdul Muis became the first person to be awarded the posthumous title of National Hero of Indonesia.
no place on the mapWikipedia: Abdul Muis - 1962
Japan conducts a test of the NAMC YS-11, its first aircraft since World War II and its only successful commercial aircraft from before or after the war.
no place on the mapWikipedia: NAMC YS-11 - 1963
The Moscow–Washington hotline between the leaders of the U.S. and the Soviet Union goes into operation.
no place on the mapWikipedia: Moscow–Washington hotline - 1967
Thurgood Marshall is confirmed as the first African American Justice of the Supreme Court of the United States.
North America · Supreme Court of the United StatesWikipedia: Supreme Court of the United States - 1974
A Belgrade–Dortmund express train derails at the main train station in Zagreb killing 153 passengers.
Europe · BelgradeWikipedia: Zagreb train disaster - 1974
A powerful bomb explodes at the Mitsubishi Heavy Industries headquarters in Marunouchi, Tokyo. Eight are killed, 378 are injured. Eight left-wing activists are arrested on May 19, 1975, by Japanese authorities.
Asia · 1974 Mitsubishi Heavy Industries bombingWikipedia: 1974 Mitsubishi Heavy Industries bombing - 1974
The Third World Population Conference ends in Bucharest, Romania. At the end of the ceremony, the UN-Romanian Demographic Centre is inaugurated.
no place on the mapWikipedia: World Population Conference - 1981
President Mohammad-Ali Rajai and Prime Minister Mohammad-Javad Bahonar of Iran are assassinated in a bombing. The office of Iran's Prosecutor General blames the People's Mujahedin of Iran.
no place on the mapWikipedia: Mohammad-Ali Rajai - 1983
Aeroflot Flight 5463 crashes into Dolan Mountain while approaching Almaty International Airport in present-day Kazakhstan, killing all 90 people on board.
Asia · Aeroflot Flight 5463Wikipedia: Aeroflot Flight 5463 - 1983
STS-8: The Space Shuttle Challenger takes off on the first night launch of the shuttle program. Guion Bluford becomes the first African-American in space on this mission.
no place on the mapWikipedia: STS-8 - 1984
STS-41-D: The Space Shuttle Discovery takes off on its maiden voyage.
no place on the mapWikipedia: STS-41-D - 1990
Gulf War: US General Norman Schwarzkopf Jr. issued General Order No. 1 prohibiting US troops from consuming alcohol or possessing pornographic material.
no place on the mapWikipedia: Gulf War - 1991
Dissolution of the Soviet Union: Azerbaijan declares independence from Soviet Union.
Asia · Dissolution of the Soviet UnionWikipedia: Dissolution of the Soviet Union - 1992
The 11-day Ruby Ridge standoff ends with Randy Weaver surrendering to federal authorities.
North America · Ruby Ridge standoffWikipedia: Ruby Ridge standoff - 1995
Bosnian War: NATO launches Operation Deliberate Force against Bosnian Serb forces.
Europe · Bosnia and HerzegovinaWikipedia: Operation Deliberate Force - 1998
Second Congo War: Armed forces of the Democratic Republic of the Congo (DRC) and their Angolan and Zimbabwean allies recapture Matadi and the Inga dams in the western DRC from RCD and Rwandan troops.
Africa · MatadiWikipedia: Second Congo War - 2002
Rico Linhas Aéreas Flight 4823 crashes on approach to Rio Branco International Airport, killing 23 of the 31 people on board.
Latin America · Rio Branco International AirportWikipedia: Rico Linhas Aéreas Flight 4823 - 2007
A heavy bomber that had been unintentionally loaded with nuclear missiles flew them from North Dakota to Louisiana before they were recognized.
North America · 2007 United States Air Force nuclear weapons incidentWikipedia: 2007 United States Air Force nuclear weapons incident - 2008
A Conviasa Boeing 737 crashes into Illiniza Volcano in Ecuador, killing all three people on board.
Latin America · 2008 Conviasa Boeing 737 crashWikipedia: 2008 Conviasa Boeing 737 crash - 2014
Prime Minister of Lesotho Tom Thabane flees to South Africa as the army allegedly stages a coup.
Africa · LesothoWikipedia: 2014 Lesotho political crisis - 2021
The last remaining American troops leave Afghanistan, ending U.S. involvement in the war.
no place on the mapWikipedia: 2020–2021 US troop withdrawal from Afghanistan - 2023
Gabonese coup d'état: After Ali Bongo Ondimba's reelection, a military coup ousts him, ending 56 years of Bongo family rule in Gabon.
Africa · GabonWikipedia: 2023 Gabonese coup d'état - 2025
Ukrainian politician Andriy Parubiy was assassinated in Lviv, Ukraine.
Europe · Assassination of Andriy ParubiyWikipedia: Assassination of Andriy Parubiy
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.
- 1993
In Casablanca (Morocco), King Hassan II inaugurates the Hassan II Mosque, the largest after the one in Mecca.
Who was born on 30 August
In order of how many Wikipedia editions have an article about each. The first 60 of 232 are shown.
- 1871
Ernest Rutherford, New Zealand-English physicist and chemist, Nobel Prize laureate (died 1937)
Spring GroveWikipedia: Ernest Rutherford - 1954
Alexander Lukashenko, Belarusian marshal and politician, 1st President of Belarus
- 1930
Warren Buffett, American businessman and philanthropist
- 1797
Mary Shelley, English novelist and playwright (died 1851)
Somers TownWikipedia: Mary Shelley - 1972
Cameron Diaz, American model, actress, and producer
San DiegoWikipedia: Cameron Diaz - 1852
Jacobus Henricus van 't Hoff, Dutch chemist and academic, Nobel Prize laureate (died 1911)
- 1958
Anna Politkovskaya, Russian journalist and activist (died 2006)
New York CityWikipedia: Anna Politkovskaya - 1748
Jacques-Louis David, French painter and illustrator (died 1825)
- 1912
Edward Mills Purcell, American physicist, Nobel Prize laureate (died 1997)
TaylorvilleWikipedia: Edward Mills Purcell - 1982
Andy Roddick, American tennis player
- 1884
Theodor Svedberg, Swedish chemist and physicist, Nobel Prize laureate (died 1971)
Valbo church parishWikipedia: Theodor Svedberg - 1972
Pavel Nedvěd, Czech footballer
- 1898
Shirley Booth, American actress and singer (died 1992)
BrooklynWikipedia: Shirley Booth - 1883
Theo van Doesburg, Dutch artist (died 1931)
UtrechtWikipedia: Theo van Doesburg - 1989
Bebe Rexha, American singer-songwriter
BrooklynWikipedia: Bebe Rexha - 1860
Isaac Levitan, Russian painter and illustrator (died 1900)
KybartaiWikipedia: Isaac Levitan - 1913
Richard Stone, English economist and statistician, Nobel Prize laureate (died 1991)
LondonWikipedia: Richard Stone - 1983
Simone Pepe, Italian footballer
Albano LazialeWikipedia: Simone Pepe - 1935
Sylvia Earle, American marine biologist
GibbstownWikipedia: Sylvia Earle - 1943
Jean-Claude Killy, French skier
Saint-CloudWikipedia: Jean-Claude Killy - 1931
Jack Swigert, American pilot and astronaut (died 1982)
DenverWikipedia: Jack Swigert - 1946
Queen Anne-Marie of Greece
AmalienborgWikipedia: Queen Anne-Marie of Greece - 1951
Gediminas Kirkilas, Lithuanian politician, 11th Prime Minister of Lithuania (died 2024)
- 1334
Peter of Castile (died 1369)
- 1950
Antony Gormley, English sculptor and academic
- 1908
Fred MacMurray, American actor (died 1991)
KankakeeWikipedia: Fred MacMurray - 1937
Bruce McLaren, New Zealand race car driver and engineer, founded the McLaren racing team (died 1970)
AucklandWikipedia: Bruce McLaren - 1985
Anna Ushenina, Ukrainian chess player
KharkivWikipedia: Anna Ushenina - 1850
Marcelo H. del Pilar, Filipino journalist and lawyer (died 1896)
- 1912
Nancy Wake, New Zealand-English captain (died 2011)
RoseneathWikipedia: Nancy Wake - 1950
Dana Rosemary Scallon, Irish singer and activist
- 1915
Princess Lilian, Duchess of Halland (died 2013)
- 1946
Peggy Lipton, American model and actress (died 2019)
New York CityWikipedia: Peggy Lipton - 1988
Ernests Gulbis, Latvian tennis player
- 1906
Joan Blondell, American actress and singer (died 1979)
ManhattanWikipedia: Joan Blondell - 1977
Félix Sánchez, American-Dominican runner and hurdler
ManhattanWikipedia: Félix Sánchez - 1856
Carl David Tolmé Runge, German mathematician, physicist, and spectroscopist (died 1927)
BremenWikipedia: Carl Runge - 1893
Huey Long, American lawyer and politician, 40th Governor of Louisiana (died 1935)
WinnfieldWikipedia: Huey Long - 1963
Michael Chiklis, American actor, director, and producer
- 1970
Paulo Sousa, Portuguese footballer and manager
- 1953
Robert Parish, American basketball player
ShreveportWikipedia: Robert Parish - 1919
Maurice Hilleman, American microbiologist and vaccinologist (died 2005)
Miles CityWikipedia: Maurice Hilleman - 1943
Robert Crumb, American illustrator
PhiladelphiaWikipedia: Robert Crumb - 1896
Raymond Massey, Canadian-American actor and playwright (died 1983)
TorontoWikipedia: Raymond Massey - 2002
Fábio Carvalho, Portuguese footballer
Torres VedrasWikipedia: Fábio Carvalho - 1870
Grand Duchess Alexandra Georgievna of Russia (died 1891)
- 1935
John Phillips, American singer-songwriter and guitarist (died 2001)
Parris IslandWikipedia: John Phillips - 1855
Evelyn De Morgan, English painter (died 1919)
- 1906
Olga Taussky-Todd, Austrian mathematician (died 1995)
OlomoucWikipedia: Olga Taussky-Todd - 1939
John Peel, English radio host and producer (died 2004)
HeswallWikipedia: John Peel - 1991
Liam Cooper, Scottish footballer
Kingston upon HullWikipedia: Liam Cooper - 1918
Ted Williams, American baseball player and manager (died 2002)
San DiegoWikipedia: Ted Williams - 1969
Vladimir Jugović, Serbian footballer
TrstenikWikipedia: Vladimir Jugović - 1985
Leisel Jones, Australian swimmer
KatherineWikipedia: Leisel Jones - 1992
Jessica Henwick, British actress
- 1716
Capability Brown, English landscape architect (died 1783)
KirkharleWikipedia: Capability Brown - 1907
Leonor Fini, Argentine painter, illustrator, and author (died 1996)
Buenos AiresWikipedia: Leonor Fini - 1948
Fred Hampton, American activist and revolutionary, chairman of the Illinois chapter of the Black Panther Party (died 1969)
SummitWikipedia: Fred Hampton - 1975
Radhi Jaïdi, Tunisian footballer and coach
- 1917
Grand Duke Vladimir Kirillovich of Russia (died 1992)
What is celebrated on 30 August
- Christian feast day: Alexander of Constantinople (Eastern Orthodoxy)
- Christian feast day: Blessed Alfredo Ildefonso Schuster
- Christian feast day: Blessed Eustáquio van Lieshout
- Christian feast day: Blessed Stephen Nehmé (Maronite Church / Catholic Church)
- Christian feast day: Charles Chapman Grafton (Episcopal Church)
- Christian feast day: Fantinus
- Christian feast day: Felix and Adauctus
- Christian feast day: Fiacre
- Christian feast day: Blessed María Rafols Bruna
- Christian feast day: Mary Ward
- Christian feast day: Narcisa de Jesús
- Christian feast day: Pammachius
- Christian feast day: Theodosius of Oria
- Christian feast day: August 30 (Eastern Orthodox liturgics)
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.