This is a list of selected April 21 anniversaries that appear in the "On this day" section of the Main Page. To suggest a new item, in most cases, you can be bold and edit this page. Please read the selected anniversaries guidelines before making your edit. However, if your addition might be controversial or on a day that is or will soon be on the Main Page, please post your suggestion on the talk page instead.
Please note that the events listed on the Main Page are chosen based more on relative article quality and to maintain a mix of topics, not based solely on how important or significant their subjects are. Only four to five events are posted at a time and thus not everything that is "most important and significant" can be listed. In addition, an event is generally not posted this year if it is also the subject of the scheduled featured article, featured list or picture of the day.
To report an error when this appears 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.
Use only ONE image at a time
Blurb | Reason |
---|---|
Tiradentes Day in Brazil | multiple issues |
Grounation Day in the Rastafari movement | reads like a story |
753 BC – Romulus and Remus legendarily founded Rome, according to the calculations by Roman scholar Varro Reatinus. | refimprove section |
1782 – A city pillar was erected on Rattanakosin Island, located on the eastern bank of the Chao Phraya River, an act considered the founding of the city of Bangkok. | refimprove section |
1894 – Norway formally adopted the Krag–Jørgensen, a repeating bolt action rifle designed by the Norwegians Ole Herman Johannes Krag and Erik Jørgensen, as the main firearm of its armed forces. | needs more footnotes, unreferenced section |
1918 – Manfred von Richthofen, known as the " Red Baron", was shot down and killed near Vaux-sur-Somme in France, after a career as the most successful fighter pilot of First World War with 80 confirmed air combat victories. | refimprove section |
1960 – Brasília, a planned city primarily designed by architect and urban planner Lúcio Costa, was officially inaugurated, replacing Rio de Janeiro as the capital of Brazil. | unreferenced section |
1967 – Colonel Georgios Papadopoulos overthrew the government of Greek Prime Minister Panagiotis Kanellopoulos, establishing the Regime of the Colonels. | refimprove sections |
1975 – Nguyễn Văn Thiệu resigned as President of South Vietnam, and was replaced by Trần Văn Hương, as communist forces closed in on victory. | unreferenced section |
2002 – In the first round of the French presidential election, Jean-Marie Le Pen progressed to the runoff, a result so surprising that "21st of April" is now a common expression in France. | BLP referencing issues, needs improved referencing throughout. |
Bajkam (d. 941) · Jan Boeckhorst (d. 1668) · Ignatius Zakka I Iwas (b. 1931)