A birthday on the globe
8 October on the globe: what happened in the world on this day, and who was born
For 8 October, the English Wikipedia lists 50 events and 244 births. 28 of the events stand at their places as rays of light; one more is a dashed circle, 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 8 October through the years
The Earth on 8 October
The picture on the globe was assembled by NASA from satellite photographs taken in October 2004: the snow, the ice and the green are those of the month.
On 8 October the Sun passes straight overhead at noon along the parallel of 5.8° south. In London, the day lasts about 11 hours 10 minutes.
Beyond 84° south the Sun no longer sets; beyond 84° 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.
Europe · Ried
1813
The Treaty of Ried is signed between Bavaria and Austria.
On the map: Ried.
Europe · Brioni Agreement
1991
Upon the expiration of the Brioni Agreement, Croatia and Slovenia sever all official relations with Yugoslavia.
On the map: the coordinates Wikidata gives for the article “Brioni Agreement”.
Also on the day’s list of Wikipedia in Romanian.
Europe · Oslo
1998
A new airport for Oslo, Norway, opened at Gardermoen, replacing a smaller one at the same location that had served as a backup to the city's previous main airport at Fornebu.
On the map: Oslo.
Asia · Council of Chalcedon
451
The first session of the Council of Chalcedon begins.
On the map: the coordinates Wikidata gives for the article “Council of Chalcedon”.
Also on the day’s list of Wikipedia in Spanish and Chinese.
North America · Montreal
1645
Jeanne Mance opens the first lay hospital of North America in Montreal.
On the map: Montreal.
North America · KDKA
1921
KDKA in Pittsburgh's Forbes Field conducts the first live broadcast of a football game.
On the map: KDKA.
8 October
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 were translated for this page.
From Wikipedia in Chinese · Oslo
2010
The Chinese dissident Liu Xiaobo, drafter of Charter 08, is awarded the Nobel Peace Prize. Liu Xiaobo is the second Chinese Nobel Peace Prize laureate after the Dalai Lama, and the first Nobel laureate born in the People's Republic of China.
On the map: Oslo.
Translated from the list on Wikipedia in Chinese.
8 October
Born on 8 October#
The English Wikipedia lists 244 births for this day. The blue points are the birthplaces of 59 of these people: those written about in the most Wikipedia editions, where Wikidata gives a place of birth.
Born on 8 October
1949
Sigourney Weaver, American actress and producer
Place of birth: Manhattan.
Born on 8 October
1970
Matt Damon, American actor, producer, and screenwriter
Place of birth: Cambridge.
Born on 8 October
1985
Bruno Mars, American singer-songwriter, producer, and actor
Place of birth: Honolulu.
Born on 8 October
1892
Marina Tsvetaeva, Russian poet and author (died 1941)
Place of birth: Moscow.
Born on 8 October
1920
Frank Herbert, American journalist, photographer, and author (died 1986)
Place of birth: Tacoma.
Born in Britain and Ireland
1917
Rodney Robert Porter, English biochemist and physiologist, Nobel Prize laureate (died 1985)
Place of birth: Newton-le-Willows.
Born in Britain and Ireland
1807
Harriet Taylor Mill, English philosopher and activist (died 1858)
Place of birth: London.
Born in Britain and Ireland
1789
William Swainson, English-New Zealand ornithologist and entomologist (died 1855)
Place of birth: London.
8 October
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: 8 October 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 8 October
The list is the English Wikipedia’s, in its own wording, as it stood in October 2026. 21 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.
- 316
Constantine I defeats Licinius, who loses his European territories.
Europe · Battle of CibalaeWikipedia: Battle of Cibalae - 451
The first session of the Council of Chalcedon begins.
Asia · Council of ChalcedonWikipedia: Council of Chalcedon - 876
Frankish forces led by Louis the Younger prevent a West Frankish invasion and defeat emperor Charles II ("the Bald").
Europe · Battle of AndernachWikipedia: Battle of Andernach - 1075
Dmitar Zvonimir is crowned King of Croatia.
no place on the mapWikipedia: Demetrius Zvonimir - 1200
Isabella of Angoulême is crowned Queen consort of England.
no place on the mapWikipedia: Isabella of Angoulême - 1322
Mladen II Šubić of Bribir is deposed as the Croatian Ban after the Battle of Bliska.
Europe · TrogirWikipedia: Battle of Bliska - 1480
The Great Stand on the Ugra River puts an end to Tatar rule over Moscow.
Europe · Great Stand on the Ugra RiverWikipedia: Great Stand on the Ugra River - 1573
The Spanish siege of Alkmaar ends with the first Dutch victory in the Eighty Years' War.
Europe · Siege of AlkmaarWikipedia: Siege of Alkmaar - 1645
Jeanne Mance opens the first lay hospital of North America in Montreal.
North America · MontrealWikipedia: Jeanne Mance - 1813
The Treaty of Ried is signed between Bavaria and Austria.
Europe · RiedWikipedia: Treaty of Ried - 1821
The Peruvian Navy is established during the War of Independence.
no place on the mapWikipedia: Peruvian Navy - 1829
Stephenson's Rocket wins the Rainhill Trials.
Britain & Ireland · Rainhill trialsWikipedia: Rainhill trials - 1856
The Second Opium War between several western powers and China begins with the Arrow Incident.
Asia · Qing dynastyWikipedia: Second Opium War - 1862
American Civil War: The Confederate invasion of Kentucky is halted at the Battle of Perryville.
North America · Battle of PerryvilleWikipedia: American Civil War - 1871
Slash-and-burn land management, months of drought, and the passage of a strong cold front cause the Peshtigo Fire, the Great Chicago Fire and the Great Michigan Fires to break out.
North America · Great Chicago FireWikipedia: Peshtigo fire - 1879
War of the Pacific: The Chilean Navy defeats the Peruvian Navy in the Battle of Angamos.
Latin America · Battle of AngamosWikipedia: Battle of Angamos - 1895
Korean Empress Myeongseong is assassinated by Japanese infiltrators.
no place on the mapWikipedia: Empress Myeongseong - 1912
The First Balkan War begins when Montenegro declares war against the Ottoman Empire.
no place on the mapWikipedia: First Balkan War - 1918
World War I: Corporal Alvin C. York kills 28 German soldiers and captures 132, for which he was awarded the Medal of Honor.
no place on the mapWikipedia: World War I - 1921
KDKA in Pittsburgh's Forbes Field conducts the first live broadcast of a football game.
North America · KDKAWikipedia: KDKA - 1932
The Indian Air Force was founded as an auxiliary air force of the British Royal Air Force.
no place on the mapWikipedia: Indian Air Force - 1939
World War II: Germany annexes western Poland.
no place on the mapWikipedia: World War II - 1941
World War II: During the preliminaries of the Battle of Rostov, German forces reach the Sea of Azov with the capture of Mariupol.
Europe · Rostov-on-DonWikipedia: Battle of Rostov - 1943
World War II: Around 30 civilians are executed by Friedrich Schubert's paramilitary group in Kallikratis, Crete.
Europe · Kallikratis executionsWikipedia: Kallikratis executions - 1944
World War II: Captain Bobbie E. Brown earns a Medal of Honor for his actions during the Battle of Crucifix Hill, just outside Aachen.
Europe · Battle of Crucifix HillWikipedia: Battle of Crucifix Hill - 1952
The Harrow and Wealdstone rail crash in England kills 112 people.
Britain & Ireland · Harrow and Wealdstone rail crashWikipedia: Harrow and Wealdstone rail crash - 1956
The New York Yankees's Don Larsen pitches the only perfect game in a World Series.
no place on the mapWikipedia: Don Larsen - 1962
Der Spiegel publishes an article disclosing the sorry state of the Bundeswehr, leading to accusations of treason.
no place on the mapWikipedia: Spiegel affair - 1967
Guerrilla leader Che Guevara and his men are captured in Bolivia. Guevara would be executed the next day.
no place on the mapWikipedia: Che Guevara - 1969
The opening rally of the Days of Rage occurs, organized by the Weather Underground in Chicago.
no place on the mapWikipedia: Days of Rage - 1970
Aleksandr Solzhenitsyn wins the Nobel Prize in literature.
no place on the mapWikipedia: Nobel Prize in Literature - 1973
Spyros Markezinis begins his 48-day term as prime minister in an abortive attempt to lead Greece to parliamentary rule.
no place on the mapWikipedia: Spyros Markezinis - 1973
Yom Kippur War: Israel loses more than 150 tanks in a failed attack on Egyptian-occupied positions.
no place on the mapWikipedia: Yom Kippur War - 1974
Franklin National Bank collapses due to fraud and mismanagement; at the time it is the largest bank failure in the history of the United States.
no place on the mapWikipedia: Franklin National Bank - 1978
Australia's Ken Warby sets the current world water speed record of 275.97 knots at Blowering Dam, Australia.
no place on the mapWikipedia: Ken Warby - 1982
Poland bans Solidarity and all other trade unions.
no place on the mapWikipedia: Solidarity - 1986
An explosion occurs at the Cipel-Marco fur factory in Kwai Chung, Hong Kong, killing 14 and injuring 10.
Asia · Kwai ChungWikipedia: 1986 Cipel-Marco fur factory explosion - 1990
First Intifada: Israeli police kill 17 Palestinians and wound over 100 near the Dome of the Rock.
no place on the mapWikipedia: First Intifada - 1991
Upon the expiration of the Brioni Agreement, Croatia and Slovenia sever all official relations with Yugoslavia.
Europe · Brioni AgreementWikipedia: Brioni Agreement - 1995
The Croatian Army and Croatian Defence Council launched Operation Southern Move, their last offensive in the Bosnian War.
Europe · Operation Southern MoveWikipedia: Croatian Army - 1998
A new airport for Oslo, Norway, opened at Gardermoen, replacing a smaller one at the same location that had served as a backup to the city's previous main airport at Fornebu.
Europe · OsloWikipedia: Oslo Airport, Gardermoen - 2001
A twin engine Cessna and a Scandinavian Airlines System jetliner collide in heavy fog during takeoff from Milan, Italy, killing 118 people.
Europe · 2001 Linate Airport runway collisionWikipedia: 2001 Linate Airport runway collision - 2001
U.S. president George W. Bush announces the establishment of the Office of Homeland Security.
no place on the mapWikipedia: United States Department of Homeland Security - 2005
The 7.6 Mw Kashmir earthquake leaves 86,000–87,351 people dead, 69,000–75,266 injured, and 2.8 million homeless.
Asia · 2005 Kashmir earthquakeWikipedia: 2005 Kashmir earthquake - 2014
Thomas Eric Duncan, the first person in the United States to be diagnosed with Ebola, dies.
no place on the mapWikipedia: Thomas Eric Duncan - 2016
In the wake of Hurricane Matthew, the death toll rises to nearly 900.
North America · Hurricane MatthewWikipedia: Hurricane Matthew - 2016
Yemen War: A funeral in Sanaa was hit by two consecutive airstrikes by a Saudi-led coalition, leaving 143–155 civilians dead and more than 525 injured.
Asia · Sanaa funeral airstrikeWikipedia: Sanaa funeral airstrike - 2019
About 200 Extinction Rebellion activists block the gates of Leinster House (parliament) in the Republic of Ireland.
Britain & Ireland · Leinster HouseWikipedia: Extinction Rebellion - 2019
Anti-government protests calling for free and fair elections began in Baku, Azerbaijan.
Asia · BakuWikipedia: 2019 Baku protests - 2020
Second Nagorno-Karabakh War: Azerbaijan twice deliberately targets the Church of the Holy Savior Ghazanchetsots of Shusha.
Asia · Armenia–Azerbaijan borderWikipedia: Second Nagorno-Karabakh War
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 were translated for this page.
- 2010
The Chinese dissident Liu Xiaobo, drafter of Charter 08, is awarded the Nobel Peace Prize. Liu Xiaobo is the second Chinese Nobel Peace Prize laureate after the Dalai Lama, and the first Nobel laureate born in the People's Republic of China.
Who was born on 8 October
In order of how many Wikipedia editions have an article about each. The first 60 of 244 are shown.
- 1949
Sigourney Weaver, American actress and producer
ManhattanWikipedia: Sigourney Weaver - 1958
Ursula von der Leyen, Belgian-German physician and politician, Defense Minister of Germany, President of the European Commission
- 1970
Matt Damon, American actor, producer, and screenwriter
CambridgeWikipedia: Matt Damon - 1985
Bruno Mars, American singer-songwriter, producer, and actor
HonoluluWikipedia: Bruno Mars - 1892
Marina Tsvetaeva, Russian poet and author (died 1941)
- 1895
Juan Perón, Argentinian general and politician, 29th President of Argentina (died 1974)
- 1920
Frank Herbert, American journalist, photographer, and author (died 1986)
TacomaWikipedia: Frank Herbert - 1970
Sadiq Khan, English lawyer and politician, Minister of State for Transport, Mayor of London
St George's HospitalWikipedia: Sadiq Khan - 319 BC
Pyrrhus of Epirus (died 272 BC)
- 1997
Bella Thorne, American actress
Pembroke PinesWikipedia: Bella Thorne - 1941
Jesse Jackson, American minister and activist (died 2026)
GreenvilleWikipedia: Jesse Jackson - 1883
Otto Heinrich Warburg, German physiologist and physician, Nobel Prize laureate (died 1970)
Freiburg im BreisgauWikipedia: Otto Heinrich Warburg - 1895
Zog I of Albania (died 1961)
BurgajetWikipedia: Zog I - 1993
Garbiñe Muguruza, Spanish tennis player
GuatireWikipedia: Garbiñe Muguruza - 1918
Jens Christian Skou, Danish chemist and physiologist, Nobel Prize laureate (died 2018)
- 1927
César Milstein, Argentinian-English biochemist and academic, Nobel Prize laureate (died 2002)
Bahía BlancaWikipedia: César Milstein - 1948
Claude Jade, French actress (died 2006)
- 1850
Henry Louis Le Châtelier, French chemist and academic (died 1936)
- 1943
Chevy Chase, American comedian, actor, and screenwriter
Lower ManhattanWikipedia: Chevy Chase - 1943
R. L. Stine, American author, screenwriter, and producer
ColumbusWikipedia: R. L. Stine - 1917
Rodney Robert Porter, English biochemist and physiologist, Nobel Prize laureate (died 1985)
Newton-le-WillowsWikipedia: Rodney Porter - 1919
Kiichi Miyazawa, Japanese politician, 78th Prime Minister of Japan (died 2007)
- 1928
Didi, Brazilian footballer and manager (died 2001)
Campos dos GoytacazesWikipedia: Didi - 1585
Heinrich Schütz, German organist and composer (died 1672)
Bad KöstritzWikipedia: Heinrich Schütz - 1873
Ejnar Hertzsprung, Danish chemist and astronomer (died 1967)
FrederiksbergWikipedia: Ejnar Hertzsprung - 1968
Zvonimir Boban, Croatian footballer and sportscaster
ImotskiWikipedia: Zvonimir Boban - 1979
Kristanna Loken, American actress
- 1884
Walther von Reichenau, German field marshal (died 1942)
KarlsruheWikipedia: Walter von Reichenau - 1939
Paul Hogan, Australian actor, producer, and screenwriter
SydneyWikipedia: Paul Hogan - 1957
Antonio Cabrini, Italian footballer and manager
CremonaWikipedia: Antonio Cabrini - 1922
Nils Liedholm, Swedish footballer, coach, and manager (died 2007)
ValdemarsvikWikipedia: Nils Liedholm - 1897
Rouben Mamoulian, Georgian-American director and screenwriter (died 1987)
TbilisiWikipedia: Rouben Mamoulian - 1980
The Miz, American wrestler, actor, and television personality
ParmaWikipedia: The Miz - 1946
Dennis Kucinich, American journalist and politician, 53rd Mayor of Cleveland
ClevelandWikipedia: Dennis Kucinich - 1952
Edward Zwick, American director, producer, and screenwriter
ChicagoWikipedia: Edward Zwick - 1807
Harriet Taylor Mill, English philosopher and activist (died 1858)
- 1930
Toru Takemitsu, Japanese composer and theorist (died 1996)
Tokyo CityWikipedia: Tōru Takemitsu - 1946
Hanan Ashrawi, Palestinian scholar, activist, and politician
NablusWikipedia: Hanan Ashrawi - 2002
Zheng Qinwen, Chinese tennis player
ShiyanWikipedia: Zheng Qinwen - 1551
Giulio Caccini, Italian composer (died 1618)
- 1896
Julien Duvivier, French director, producer, and screenwriter (died 1967)
- 1968
Emily Procter, American actress
RaleighWikipedia: Emily Procter - 1993
Molly Quinn, American actress and producer
TexarkanaWikipedia: Molly C. Quinn - 1948
Johnny Ramone, American guitarist and songwriter (died 2004)
Long IslandWikipedia: Johnny Ramone - 1993
Angus T. Jones, American actor
- 1974
Koji Murofushi, Japanese hammer thrower
- 1870
Louis Vierne, French organist and composer (died 1937)
PoitiersWikipedia: Louis Vierne - 1890
Philippe Thys, Belgian cyclist (died 1971)
AnderlechtWikipedia: Philippe Thys - 1980
Nick Cannon, American actor, rapper, and producer
San DiegoWikipedia: Nick Cannon - 1982
Annemiek van Vleuten, Dutch cyclist
- 1789
William Swainson, English-New Zealand ornithologist and entomologist (died 1855)
- 1890
Eddie Rickenbacker, American soldier and pilot, Medal of Honor recipient (died 1973)
ColumbusWikipedia: Eddie Rickenbacker - 1932
Ray Reardon, Welsh snooker player and police officer (died 2024)
TredegarWikipedia: Ray Reardon - 1954
Michael Dudikoff, American actor
Redondo BeachWikipedia: Michael Dudikoff - 1965
Matt Biondi, American swimmer and coach
MoragaWikipedia: Matt Biondi - 1901
Mark Oliphant, Australian physicist, humanitarian and politician, Governor of South Australia (died 2000)
AdelaideWikipedia: Mark Oliphant - 1956
Janice E. Voss, American engineer and astronaut (died 2012)
South BendWikipedia: Janice E. Voss - 1996
Sara Takanashi, Japanese ski jumper
KamikawaWikipedia: Sara Takanashi - 1873
Alexey Shchusev, Russian architect and academic, designed Lenin's Mausoleum (died 1949)
ChișinăuWikipedia: Alexei Shchusev - 1938
Fred Stolle, Australian-American tennis player and sportscaster (died 2025)
HornsbyWikipedia: Fred Stolle
What is celebrated on 8 October
- Christian feast day: Evodus (or Yves)
- Christian feast day: Blessed John Adams
- Christian feast day: Palatias and Laurentia
- Christian feast day: Pelagia (Eastern Orthodox and Roman Catholic Churches)
- Christian feast day: Reparata
- Christian feast day: San Ernesto, Che Guevara as a folk saint. (Bolivian campesinos)
- Christian feast day: Simeon (Gospel of Luke)
- Christian feast day: Thaïs
- Christian feast day: Ugo Canefri
- Christian feast day: William Dwight Porter Bliss and Richard T. Ely (Episcopal Church)
- Christian feast day: October 8 (Eastern Orthodox liturgics)
- World Space Week (October 4–10)
- Air Force Day (India)
- Children's Day (Iran)
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.