** " The Coming of Atlas ", a DC Comics story arc featuring Atlas

** France — voltage change 3 kV DC – 25 kV AC

** Germany — voltage change 3 kV DC – 15 kV AC

** Netherlands — voltage change 3 kV DC – 1500 V DC

** Luxembourg — no voltage change at the border ( the line Arlon-Luxembourg is at 3 kV DC and the line Gouvy-Luxembourg is at 25 kV AC )

** UK — voltage remains at 25 kV AC — voltage change 750 V DC third rail ( The Southern Region ).

** external: 3V DC

** external: 9V DC, 300mA, 3W

** The United States Post Office Department ( later renamed the United States Postal Service ) begins the 3rd regular airmail service in the world ( between New York City, Philadelphia and Washington, DC ), the 1st being from Allahabad to Naini Junction in India on the 18th February 1911 and the 2nd being from London to Windsor Castle on the 22nd June 1911.

** In Washington, DC, the Holocaust Memorial Museum is dedicated.

** One million men gather for Promise Keepers ' " Stand in the Gap " event in Washington, DC.

** Vietnam War: In Washington, DC, 250, 000 – 500, 000 protesters stage a peaceful demonstration against the war, including a symbolic " March Against Death ".

** WWII: In Washington, DC, six Germans would-be saboteurs are executed.

** Bon Scott, Australian rock singer ( AC / DC ) ( d. 1980 )

** In Washington, DC John F. Kennedy delivers the first live presidential news conference.

** The funeral of longtime House Speaker Sam Rayburn is held in Washington, DC.

** A guard takes his place at the Tomb of the Unknowns in Washington, DC ; continuous guard has been maintained there ever since.

** The National Organization for Women ( NOW ) is founded in Washington, DC.

** Telephone service goes down in the cities of Washington DC, Pittsburgh, Los Angeles and San Francisco due to a software bug.

** Five hundred thousand people in Washington, DC and 125, 000 in San Francisco march in protest against the Vietnam War.

** In Washington, DC, a pro-Vietnam War march draws 25, 000.

** DC distribution system.

** DC motor, an electric motor that runs on direct current electricity

** DC coupled plasma

** One, Holy, Catholic, and Apostolic Church

** British American Racing, a Formula One constructor

** John I, The Good or The One of Happy Memory 1385-1433

** Adeline in The Romance of the Forest-“ Her wicked Marquis, having secretly immured Number One ( his first wife ), has now a new and beautiful wife, whose character, alas!

** One compartment kinetics

** One of five ships ( the first constructed in 1835 ) of the Hellenic Navy named after him

** One of the arts – imaginative, creative, or nonscientific branch of knowledge, especially as studied academically.

** Lotus F1 Team, a British Formula One team that started competing in 2012 season

** Team Lotus, a British Formula One racing team that competed between 1954 and 1994

** Pacific Team Lotus, the successor team that resulted from a merger with Pacific and competed in Formula One in 1995

** In the Star Trek: Voyager episode " One Small Step ", USS Voyager discovers the fate of Ares IV, one of the first manned expeditions to Mars in 2032.

** One common technique just blocks all interrupts for the duration of the critical section.

** One Day Internationals ( ODIs )

** One of 4 bombs detonated in Lusaka, Zambia, destroys the Angolan Embassy.

** Zayn Malik, British singer of the band called One Direction

** Keke Rosberg, Finnish Formula One champion

** Clay Regazzoni, Swiss Formula One driver ( d. 2006 )

** Vietnam War – Battle of Khe Sanh: One of the most publicized and controversial battles of the war begins, ending on April 8.

** Mika Häkkinen, Finnish Formula One driver

** Andrea Chiesa, Swiss Formula One driver

** The One Meridian Plaza fire in Philadelphia, Pennsylvania kills 3 firefighters and destroys 8 floors of the building.

** The One Love Peace Concert is held at National Heroes Stadium in Kingston, Jamaica.

** Ronnie Peterson, Swedish Formula One driver ( b. 1944 )

** Killer Reese One, American rapper ( King Fantastic )