Wikipedia talk:Selected anniversaries/December 30

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This is the talk page for making suggestions or discussing improvements to Wikipedia:Selected anniversaries/December 30.

To report an error when this list is currently on the Main Page, see Main Page errors. Please remember that this list defers to the supporting articles, so it is best to achieve consensus and make any necessary changes there first.
Before making a suggestion, please read the selected anniversaries guidelines. Please remember that this list usually defers to supporting pages when there is disagreement, so it is best to achieve consensus and make any necessary changes there first.
To discuss improvements to the corresponding December 30 article, see Talk:December 30 instead.

Frequently asked questions

Q1: Why is [Insert event here], an event that is "more important and significant" than all the others that are currently listed, not posted?: A1: Relative article quality along with the mix of topics already listed are often deciding factors in what gets posted. Any given day of the year can have a great many important or significant historical events. The problem is that there is generally only room on the Main Page to list about 5 events at a time, so not everything can be posted.

As stated on Wikipedia:FAQ/Main Page, the items and events posted on the Main Page are chosen based more on how well they are written, not based on how much important or significant their subjects are. It is easier for admins to select a well-written, cited, verifiable article over a poor one versus trying to determine objectively how much a subject is important or significant.

Keep in mind that the quality requirements only apply to the selected bolded article, not the other links. Thus, an event may qualify for multiple dates in a year if there is an article written in a summary style and an article providing detailed content; if one of those pages have cleanup issues, the other page can be bolded as an alternate.

Another criterion is to maintain some variety of topics, and not exhibit, just for example, tech-centrism, or the belief that the world stops at the edge of the English-speaking world. Many days have a large pool of potential articles, so they will rotate in and out every year to give each one some Main Page exposure. In addition, an event is not posted if it is also the subject of this year's scheduled featured article or featured picture.

Q2: There are way too many 20th-century events listed. Why aren't there more events from the 19th century and before?

A2: The short, basic reason is the systemic bias of Wikipedia. There are not enough good, well-written articles on 19th-century and earlier events for all 365 days in the year. Currently, a majority of users seem to be generally more interested in writing articles about recent events. If you would like to further help mitigate the systemic bias in Wikipedia, see Wikipedia:WikiProject Countering systemic bias.

Q3: This page seems to be biased toward events based in [Insert country or region here]. What can be done about it?

A3: This again is attributed to the systemic bias of Wikipedia. Many users are generally more interested in working on good, well-written articles pertaining to their home country. Since this is the English Wikipedia, there will be more English-speaking users, and thus more articles pertaining to English-speaking countries. And if there are more users who are from the United States, there will probably be more well-written articles about events based in the United States. Again, if you would like to further help mitigate the systemic bias in Wikipedia, see Wikipedia:WikiProject Countering systemic bias.

Q4: Why is the birthday/death anniversary of [Insert name here] not listed?

A4: There are only four slots available for birth and death anniversaries. As with the events, article quality and diversity in time period, geography, and reason for notability are all contributing factors in whether an article gets selected for inclusion.

Q5: Are the holidays/observances listed in any particular order?

A5: Yes, there is a specified order: International observances first, then alphabetically by where observed.

Q6: Some of the holidays/observances that are listed have dates in parentheses beside them. What do they mean?

A6: There are two reasons that some holidays/observances have dates next to them:

Non-Gregorian-based holidays/observances are marked with the current year as a reminder to others that their dates do in fact vary from year to year.
National Days, Independence Days, and other holidays celebrating the nationhood of a country are generally marked by the year of the significant historic date being observed.

Today's featured article for December 30, 2024

Mountain pigeons are four species of birds in the genus Gymnophaps in the pigeon family Columbidae. They are found on islands in eastern Indonesia and Melanesia, where they inhabit hill and montane forest. Medium-sized pigeons with long tails and wings, they are 33–38.5 cm (13.0–15.2 in) long and weigh 259–385 g (9.1–13.6 oz). They mostly have dull grey, white, or chestnut-brown plumage, their most distinctive feature being bright red skin around the eyes. Males and females mostly look alike, but the Papuan and pale mountain pigeons show slight sexual dimorphism. They are social and are usually seen in flocks of 10–40 birds, although some species can form flocks of more than 100. The genus was originally described by the Italian zoologist Tommaso Salvadori in 1874 and currently contains the Papuan, Seram, Buru, and pale mountain pigeons. Mountain pigeons inhabit trees and feed on a wide variety of fruit. All four species are listed as being of least concern on the IUCN Red List. (Full article...)

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Picture of the day for December 30, 2024

Bathymetry is the study of underwater depth of sea and ocean floors, lake floors and river floors. It has been carried out for more than 3000 years, with the first recorded evidence of water depth measurements occurring in Ancient Egypt. Bathymetric measurements are conducted with various methods, from depth sounding, sonar and lidar techniques, to buoys and satellite altimetry. However, despite modern computer-based research, the ocean seabed remains in many locations less measured than the topography of Mars. Bathymetry has various uses including the production of Bathymetric charts to guide vessels and identify underwater hazards, the study of marine life near the floor of water bodies, coastline analysis and ocean dynamics, including predicting currents and tides. This NASA animation shows the order in which oceanic floors and seabeds would be revealed if the world's oceans were gradually drained. Continental shelves appear mostly by a depth of 140 meters, mid-ocean ridges by 3000 meters, and oceanic trenches at depths beyond 6000 meters.

Animation credit: NASA / Goddard Space Flight Center, Horace Mitchell and James O'Donoghue

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← Wikipedia talk:Selected anniversaries/December 29 * Wikipedia talk:Selected anniversaries/December 31 →

2011 notes

Moved to Ineligible: Paul Kruger (maintenance), Treaty on the Creation of the USSR (maintenance)
Omitted: Gadsden Purchase, Coronation of the Hungarian monarch, Michael of Romania, Rizal Day bombings, Tropical Storm Zeta
Included: 1066 Granada massacre (first appearance), Siege of St. Augustine (1702) (first appearance), Ferdinand Marcos (5th appearance, last in 2011—was previously listed on January 17; last time on December 30 was in 2006), 2006 Madrid-Barajas Airport bombing (first appearance)
Left in: Edwin Hubble (2nd consecutive appearance, 2 total)

--howcheng {chat} 17:34, 29 December 2011 (UTC)[reply]

Addendum: 1066 Granada massacre removed due to complaints and replaced by Michael of Romania. howcheng {chat} 18:49, 30 December 2011 (UTC)[reply]
Addendum 2: Edwin Hubble moved to November 23 (December 30 date was incorrect; either November 23 or January 1 works, and the latter is already kind of crowded). howcheng {chat} 01:32, 31 December 2011 (UTC)[reply]

2012 notes

Moved to Ineligible: Coronation of the Hungarian monarch (maintenance)
Omitted: Edwin Hubble (moved to November 23, as stated above); Ferdinand Marcos (ineligible—maintenance); 2006 Madrid-Barajas Airport bombing
Included: José Rizal (8th appearance, last in 2010); Tropical Storm Zeta (2nd appearance, last in 2010); MV Senopati Nusantara (first appearance)
Repeats: Siege of St. Augustine (1702) (2nd consecutive appearance, 2 total); Michael of Romania (4th consecutive appearance, 9 total)

—howcheng {chat} 23:25, 28 December 2012 (UTC)[reply]

2013 notes

Omitted: Siege of St. Augustine (1702); José Rizal; Michael I of Romania; Tropical Storm Zeta; MV Senopati Nusantara
Included: Battle of Wakefield (first appearance); Gadsden Purchase (6th appearance, last in 2010); Rizal Day bombings (2nd appearance, last in 2010); Execution of Saddam Hussein (3rd appearance, last in 2009)
Repeats: Iroquois Theatre fire (2nd consecutive appearance, 3 total)

—howcheng {chat} 07:03, 29 December 2013 (UTC)[reply]

2014 notes

Omitted: Gadsden Purchase; Iroquois Theatre fire; Rizal Day bombings; Execution of Saddam Hussein
Included: Siege of St. Augustine (1702) (3rd appearance, last in 2012); José Rizal (9th appearance, last in 2012); Ferdinand Marcos (6th appearance, last in 2011; rescued from Ineligible); 2006 Madrid-Barajas Airport bombing (2nd appearance, last in 2011)
Repeats: Battle of Wakefield (2nd consecutive appearance, 2 total)

—howcheng {chat} 06:49, 28 December 2014 (UTC)[reply]

2015 notes

Deleted: Paul Kruger (moved to December 8)
New articles (unused): Yellow River oil spill
Omitted: Battle of Wakefield; José Rizal (ineligible—maintenance); 2006 Madrid-Barajas Airport bombing
Included: Gadsden Purchase (7th appearance, last in 2013); All-India Muslim League (4th appearance, last in 2008; rescued from Ineligible); Tropical Storm Zeta (3rd appearance, last in 2012; 10th anniversary)
Repeats: Siege of St. Augustine (1702) (2nd consecutive appearance, 4 total); Ferdinand Marcos (2nd consecutive appearance, 7 total; 50th anniversary)

—howcheng {chat} 17:41, 28 December 2015 (UTC)[reply]

2016 notes

Moved to Ineligible: Battle of Wakefield (maintenance); Execution of Saddam Hussein (maintenance)
Omitted: Ferdinand Marcos (ineligible—maintenance); Tropical Storm Zeta
Included: Iroquois Theatre fire; MV Senopati Nusantara
Repeats: Siege of St. Augustine (1702) (3rd consecutive appearance, 5 total); Gadsden Purchase (2nd consecutive appearance, 8 total); All-India Muslim League (2nd consecutive appearance, 5 total)

—howcheng {chat} 08:23, 30 December 2016 (UTC)[reply]

2017 notes

New articles (unused): Mexico–Guatemala conflict; December 2013 Kinshasa attacks
Omitted: Siege of St. Augustine (1702); Gadsden Purchase; Iroquois Theatre fire; MV Senopati Nusantara
Included: Battle of Wakefield (3rd appearance, last in 2014; rescued from Ineligible); Battle of Buffalo (first appearance); National Bureau of Investigation (Finland) (first appearance); December 30, 2009 pro-government rally in Iran (first appearance); Rudyard Kipling (first appearance); Josephine Butler (first appearance); Fatima Jibrell (first appearance)
Repeats: All-India Muslim League (3rd consecutive appearance, 6 total)

—howcheng {chat} 01:48, 30 December 2017 (UTC)[reply]

2018 notes

Omitted: Battle of Wakefield; Battle of Buffalo; National Bureau of Investigation (Finland); December 30, 2009 pro-government rally in Iran; Rudyard Kipling; Josephine Butler; Fatima Jibrell
Included: Battle of Glenmama (first appearance); Gadsden Purchase (9th appearance, last in 2016); Mexico–Guatemala conflict (first appearance; 60th anniversary); December 2013 Kinshasa attacks (first appearance); Giovanni Baglione (first appearance); Osman Hamdi Bey (first appearance); Rosalinde Hurley (first appearance)
Repeats: All-India Muslim League (4th consecutive appearance, 7 total)

—howcheng {chat} 01:00, 30 December 2018 (UTC)[reply]

2019 notes

New articles (ineligible): Dolo hospital airstrike (was on DYK on 2019-06-19)
Omitted: Battle of Glenmama; Gadsden Purchase; All-India Muslim League; Mexico–Guatemala conflict; December 2013 Kinshasa attacks; Giovanni Baglione; Osman Hamdi Bey
Included: Battle of Wakefield (4th appearance, last in 2017); Siege of St. Augustine (1702) (6th appearance, last in 2016); Iroquois Theatre fire (5th appearance, last in 2016); National Bureau of Investigation (Finland) (2nd appearance, last in 2017); December 30, 2009 Iranian pro-government rallies (2nd appearance, last in 2017; 10th anniversary); André Messager (first appearance); C. Harold Wills (first appearance)
Repeats: Rosalinde Hurley (2nd consecutive appearance, 2 total; 90th birthday)

—howcheng {chat} 19:32, 31 December 2019 (UTC)[reply]

2020 notes

Rescued from Ineligible (unused): Dolo hospital airstrike; First term of the presidency of Ferdinand Marcos (blurb previously featured Ferdinand Marcos, which remains ineligible); Execution of Saddam Hussein
Omitted: Siege of St. Augustine (1702); Iroquois Theatre fire; National Bureau of Investigation (Finland); December 30, 2009 Iranian pro-government rallies; André Messager; Rosalinde Hurley
Included: Battle of Glenmama (2nd appearance, last in 2018); All-India Muslim League (8th appearance, last in 2018); Arroyo Seco Parkway (3rd appearance, last in 2015; moved from July 20; 80th anniversary); Rizal Day bombings (3rd appearance, last in 2013); Bernard Gui (first appearance); Sebastián Kindelán y O'Regan (first appearance)
Repeats: Battle of Wakefield (2nd consecutive appearance, 5 total); C. Harold Wills (2nd consecutive appearance, 2 total; 80th anniversary)

—howcheng {chat} 04:17, 2 January 2021 (UTC)[reply]

- Disputing Marcos's inauguration on December 30, 1965. What make this more significant than his inauguration 4 years later so that we can highlight Second term of the presidency of Ferdinand Marcos? Isn't this cheating anyway, as First term of the presidency of Ferdinand Marcos doesn't have details on what exactly happened on his first inauguration? (It's like substituting World War II for D-Day?) Howard the Duck (talk) 08:21, 2 January 2021 (UTC)[reply]

2021 notes

Omitted: Battle of Wakefield; All-India Muslim League; Arroyo Seco Parkway; Rizal Day bombings; Bernard Gui; Sebastián Kindelán y O'Regan; C. Harold Wills
Included: Battle of Buffalo (2nd appearance, last in 2017); Second term of the presidency of Ferdinand Marcos (first appearance); Execution of Saddam Hussein (4th appearance, last in 2013); Vincenzo da Filicaja (first appearance); Rudyard Kipling (2nd appearance, last in 2017); Erica Garner (first appearance)
Repeats: Battle of Glenmama (2nd consecutive appearance, 3 total)

—howcheng {chat} 18:35, 31 December 2021 (UTC)[reply]