This is a list of selected April 18 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 |
---|---|
; Independence Day in Zimbabwe (1980) | refimprove sections |
1506 – Construction of the current St. Peter's Basilica in Vatican City, to replace the old basilica built in the 4th century, began. | refimprove section |
1738 – By royal decree, King Philip V established the Real Academia de la Historia, tasked with studying the history of Spain. | Undue weight on controversies, lack of sourcing |
1847 – Mexican–American War: Winfield Scott's United States troops out-flanked and drove Santa Anna's larger Mexican army from a strong defensive position in the Battle of Cerro Gordo. | self-contradictory |
1906 – A major earthquake and resulting fires devastated San Francisco, killing at least 3,000 people and leaving more than half of the city's population homeless. | POTD for 2022 |
1923 – The New York Yankees of Major League Baseball began playing their games in the newly constructed Yankee Stadium. | refimprove section |
1938 – Superman, created by Jerry Siegel and Joe Shuster of DC Comics, made his debut in Action Comics #1, the first true superhero comic book. | Large amounts of unsourced material |
1942 – World War II: Sixteen B-25 Mitchell bombers from the aircraft carrier USS Hornet carried out the Doolittle Raid, the first Allied attack on the Japanese home islands. | refimprove section |
1947 – In one of the largest non-nuclear single explosive detonations in history, the Royal Navy set off 4,000 tonnes of surplus ammunition in an unsuccessful attempt to destroy the island of Heligoland, Germany. | refimprove, self-contradictory |
1955 – Representatives from 29 African and Asian countries met in the inaugural Bandung Conference in Indonesia to promote economic and cultural cooperation. | unsourced material, weasel words in WP voice |
1961 – The Soviet Pluton planetary radar performed the first successful radiolocation of the planet Venus. | outdated |
1983 – A suicide bomber destroyed the United States Embassy in Beirut, Lebanon, killing over 60 people with a car bomb. | needs more footnotes |
1988 – Iran–Iraq War: U.S. naval forces attacked Iranian forces in retaliation for damage to the American frigate USS Samuel B. Roberts due to mines in the Persian Gulf. | refimprove section |
April 18: Patriots' Day in various U.S. states (2022)