| 18901 | February 18 | Event | 1955 – Operation Teapot: Teapot test shot "Wasp" is successfully detonated at the Nevada Test Site with a yield of 1.2 kilotons. Wasp is the first of fourteen shots in the Teapot series. |
| 18902 | February 18 | Event | 1957 – Kenyan rebel leader Dedan Kimathi is executed by the British colonial government. |
| 18903 | February 18 | Event | 1957 – Walter James Bolton becomes the last person legally executed in New Zealand. |
| 18904 | February 18 | Event | 1965 – The Gambia becomes independent from the United Kingdom. |
| 18905 | February 18 | Event | 1969 – Hawthorne Nevada Airlines Flight 708 crashes into Mount Whitney killing all on board. |
| 18906 | February 18 | Event | 1970 – The Chicago Seven are found not guilty of conspiring to incite riots at the 1968 Democratic National Convention. |
| 18907 | February 18 | Event | 1972 – The California Supreme Court in the case of People v. Anderson, (6 Cal.3d 628) invalidates the state's death penalty and commutes the sentences of all death row inmates to life imprisonment. |
| 18908 | February 18 | Event | 1977 – The Space Shuttle Enterprise test vehicle is carried on its maiden "flight" on top of a Boeing 747. |
| 18909 | February 18 | Event | 1978 – The first Ironman Triathlon competition takes place on the island of Oahu and is won by Gordon Haller. |
| 18910 | February 18 | Event | 1979 – Snow falls in the Sahara Desert in southern Algeria for the only time in recorded history. |
| 18911 | February 18 | Event | 1983 – Thirteen people die and one is seriously injured in the Wah Mee massacre in Seattle. It is said to be the largest robbery-motivated mass-murder in U.S. history. |
| 18912 | February 18 | Event | 1991 – The IRA explodes bombs in the early morning at Paddington station and Victoria station in London. |
| 18913 | February 18 | Event | 2001 – FBI agent Robert Hanssen is arrested for spying for the Soviet Union. He is ultimately convicted and sentenced to life imprisonment. |
| 18914 | February 18 | Event | 2001 – Seven-time NASCAR Sprint Cup Series champion Dale Earnhardt dies in an accident during the Daytona 500. |
| 18915 | February 18 | Event | 2001 – Inter-ethnic violence between Dayaks and Madurese breaks out in Sampit, Indonesia, that will ultimately result in more than 500 deaths and 100,000 Madurese displaced from their homes. |
| 18916 | February 18 | Event | 2003 – Nearly 200 people die in the Daegu subway fire in South Korea. |
| 18917 | February 18 | Event | 2004 – Up to 295 people, including nearly 200 rescue workers, die near Nishapur in Iran when a runaway freight train carrying sulfur, petrol and fertilizer catches fire and explodes. |
| 18918 | February 18 | Event | 2007 – Terrorist bombs explode on the Samjhauta Express in Panipat, Haryana, India, killing 68 people. |
| 18919 | February 18 | Event | 2013 – Armed robbers steal a haul of diamonds worth $50 million during a raid at Brussels Airport in Belgium. |
| 18920 | February 18 | Event | 2014 – At least 76 people are killed and hundreds are injured in clashes between riot police and demonstrators in Kiev, Ukraine. |
| 18921 | February 18 | Birth | 1372 – Ibn Hajar al-Asqalani, Egyptian jurist and scholar (d. 1448) |
| 18922 | February 18 | Birth | 1404 – Leon Battista Alberti, Italian painter and philosopher (d. 1472) |
| 18923 | February 18 | Birth | 1486 – Chaitanya Mahaprabhu, Indian monk and saint (d. 1534) |
| 18924 | February 18 | Birth | 1516 – Mary I of England (d. 1558) |
| 18925 | February 18 | Birth | 1530 – Uesugi Kenshin, Japanese daimyo (d. 1578) |
| 18926 | February 18 | Birth | 1543 – Charles III, Duke of Lorraine (d. 1608) |
| 18927 | February 18 | Birth | 1559 – Isaac Casaubon, Swiss philologist and scholar (d. 1614) |
| 18928 | February 18 | Birth | 1602 – Per Brahe the Younger, Swedish soldier and politician, Governor-General of Finland (d. 1680) |
| 18929 | February 18 | Birth | 1609 – Edward Hyde, 1st Earl of Clarendon, English historian and politician, Chancellor of the Exchequer (d. 1674) |
| 18930 | February 18 | Birth | 1632 – Giovanni Battista Vitali, Italian violinist and composer (d. 1692) |