Celebrated as Valentine's Day, one of the most widely observed unofficial holidays in which romantic greeting cards and gifts are exchanged.

1778 "Stars & Stripes" arrives in foreign port for first time (France) More ...
1794 First US textile machinery patent granted, to James Davenport More ...
1803 Apple parer patented by Moses Coates, Downington PA More ...
1848 James K Polk became first President photographed in office (Matthew Brady) More ...
1854 Horace Smith and Daniel Wesson patented a firearm. More ...
1872 First state bird refuge authorized (Lake Merritt CA) More ...
1876 A G Bell & Elisha Gray apply for telephone patents More ...
1889 First trainload of fruit (oranges) leaves Los Angeles for the east
1894 Venus is both a morning star & evening star
1899 US Congress begins using voting machines
1903 US Dept of Commerce & Labor established More ...
1907 First US foxhound association forms in New York NY More ...
1912 First US submarines with diesel engines commissioned, Groton CT More ...
1912 Arizona becomes 48th state More ...
1918 USSR adopts New Style (Gregorian) calendar More ...
1919 United Parcel Service forms More ...
1920 League of Women Voters forms in Chicago More ...
1921 Skeezix of "Gasoline Alley" discovered on Wallet's doorstep More ...
1924 IBM Corporation founded by Thomas Watson More ...
1929 St Valentine's Day Massacre in Chicago IL, 7 gangsters killed More ...
1939 German battleship Bismarck was launched More ...
1941 1,000,000th vehicle traverses the New York Midtown Tunnel
1953 "Till I Waltz Again with You" by Teresa Brewer topped the charts More ...
1957 Southern Christian Leadership Conference organizes in New Orleans More ...
1959 "Stagger Lee" by Lloyd Price topped the charts. More ...
1961 Element 103, Lawrencium, first produced in Berkeley CA
1962 First lady Jacqueline Kennedy conducts White House tour on TV More ...
1963 US launches communications satellite Syncom 1 More ...
1966 Wilt Chamberlain breaks NBA career scoring record at 20,884 points
1967 Aretha Franklin records "Respect" More ...
1970 "Thank You (Falettinme Be Mice Elf Agin)" by Sly & the Family Stone topped the charts More ...
1971 Movie "Ben Hur" first shown on television
1971 Richard Nixon installs secret taping system in White House More ...
1972 USSR launches Luna 20; unmanned probe soft-lands on moon - returns More ...
1972 The musical, "Grease", opened at the Eden Theatre in New York City More ...
1976 "50 Ways to Leave Your Lover" by Paul Simon topped the charts More ...
1978 First "micro on a chip" patented by Texas Instruments More ...
1980 US launches Solar Maximum Mission Observatory to study solar flares More ...
1981 "Celebration" by Kool & the Gang topped the charts More ...
1987 "Livin' on a Prayer" by Bon Jovi topped the charts More ...
1989 World's first satellite Skyphone opens More ...
1998 "Nice & Slow" by Usher topped the charts More ...