* April 1-The Go-Go's sign to IRS Records.

* April 1-The NHL had their first work stoppage as NHL players went on strike.

** April 1-The town of Sanjō, the 30 villages is established.

* April 1-The Ottawa Senators win the Stanley Cup, defeating the Seattle Metropolitans.

* April 1-The Canadian Radio-television and Telecommunications Commission is given the power to regulate Canadian television and radio.

* April 1-The spending mandate by Premier Bill Bennett's government expires without a sitting of the House or the calling of an election: constitutional interregnum and crisis

* April 1-The Canadian Air Transport Security Authority is established

* April 1-The Parliament of Canada passes Quebec Boundaries Extension Act that transferred to the Province of Quebec the territory bounded by the Eastmain River, the Labrador coast, and Hudson and Ungava Bays, extending the northern boundary to its present location.

* April 1-The Genesis probe closes and seals its particle collection instrument, and begins to return to Earth.

* April 1-The Royal Canadian Air Force is formed.

* April 1-The NA-16 prototype of the T-6 Texan / Harvard

* April 1-The last operational flight by a Royal Air Force Spitfire takes place.

* April 1-The United States launches the first weather satellite, TIROS-1.

* April 1-The BBC Radiophonic Workshop is established.

* April 1-The British Government orders the release of all Irish prisoners in British prisons convicted of sedition.

* April 1-The Southern Pacific Railroad takes over operations of the Central Pacific Railroad.

* April 1-The Central Railroad of New Jersey ( CNJ ) pulls out of the Commonwealth of Pennsylvania, becoming a terminal road in New Jersey ; this does not affect their Lehigh and New England Railway operations, however.

* Radio 1-The Inside Scene, ISBN 1-4251-5729-7, 18 April 2008, Trafford Publishing

* April 1-The first All-Ireland Senior Hurling Championship is held in Birr County Offaly between Galway and Tipperary.

* April 27 – Heavyweight boxing champion Rocky Marciano retires without losing a professional boxing match.

The Pony Express was a fast mail service crossing the Great Plains, the Rocky Mountains, and the High Sierra from St. Joseph, Missouri, to Sacramento, California, from April 3, 1860 to October 1861.

" Rocky Mountain News ( CO ) 6 April 1997.

* North Stonington Village Historic District — Route 2, Main Street, Wyassup, Babcock, Caswell, and Rocky Hollow Roads ( added April 17, 1983 )

Rocky Marciano ( born Rocco Francis Marchegiano ; September 1, 1923 – August 31, 1969 ) was an American professional boxer and the World Heavyweight Champion from September 23, 1952, to April 27, 1956.

Harry M. Miller produced the original Sydney production of Rocky Horror, which opened on 15 April 1974, running for almost two years in the New Arts Cinema ( formerly The Astor, later The Valhalla and now an office building ) in Glebe.

The Rocky Horror Show transferred to the 820-seat Comedy Theatre on Panton Street in the West End, running from 6 April 1979 until 13 September 1980, closing the play's initial run of 2, 960 performances.

Most of the annual runoff in the basin occurs with the melting of Rocky Mountains snowpack beginning in April, which peaks during May and June before exhausting in late July – early August.

Talia Shire ( born April 25, 1946 ) is an American actress most known for her roles as Connie Corleone in The Godfather films and Adrianna Balboa ( née Pennino ) in the Rocky series.

Rocky Mountain News, April 11, 2000.

* April 16-In a highly anticipated bout, Sugar Ray Robinson retains his world Middleweight title with a third round knockout of former world champion Rocky Graziano, who had knocked Robinson down seconds before losing the fight, Chicago.

A section of that Appropriations Act directed the Secretary of the Interior to reissue within 60 days of enactment the final rule published on April 2, 2009, that identified the Northern Rocky Mountain population of gray wolf ( Canis lupus ) as a distinct population segment ( DPS ) and to revise the List of Endangered and Threatened Wildlife by removing most of the gray wolves in the DPS.

The first edition of the Rocky Mountain News on 23 April 1859 identified itself on the masthead as being located at " Cherry Creek, K. T ." Gold was discovered at Russellville ( now in Douglas County ) in the upper Cherry Creek drainage, and in the Platte River near its confluence with Cherry Creek.

The last spike ceremony heralding completion of the rail line across the prairies, and through the Rocky Mountains to the newly constructed seaport at Prince Rupert, British Columbia was held one mile east of Fort Fraser, British Columbia on April 7, 1914.

* Fleetwood Mac — April 1, with Rocky Burnette and September 16, 1977, August 24, 1980, September 30, 1987, with The Cruzados and August 13, 2003

On April 21, Low Ki returned to New Japan Pro Wrestling, aligning himself with the Chaos stable and teaming with Gedo, Jado and Rocky Romero in an eight man tag team match, where they defeated Jushin Liger, Prince Devitt, Ryusuke Taguchi and Tiger Mask IV, with Ki pinning IWGP Junior Heavyweight Champion Devitt for the win.

In April 2007 Dick's Sporting Goods Park, a soccer-specific stadium, was opened on part of the former Rocky Mountain Arsenal land that was transferred to Commerce City.

He then fought former world champion Rocky Lockridge on April 22, 1992, winning a ten-round unanimous decision.

Coley Wallace ( April 5, 1927-January 30, 2005 ) was an American actor and heavyweight boxer who outpointed Rocky Marciano in a three-round amateur fight.

Nevertheless, James Jerome Hill of the Canadian Pacific Railway hired Rogers in April 1881 to find a rail route through the Selkirk and Rocky Mountains.

On April 30, 2010, Covell, under his Christopher Daniels gimmick, made his debut for Mexican promotion Asistencia Asesoría y Administración ( AAA ) as a surprise member of the villainous La Legión Extranjera ( Foreign Legion ) stable, in a six man tag team match, where he, Alex Koslov and Joe Lider defeated Extreme Tiger, Jack Evans and Rocky Romero, when Daniels pinned the AAA Cruiserweight Champion, Extreme Tiger.

" Railway Routes Across the Rocky Mountains " Civil Engineering ( February, March, and April 1940 ).

On April 16, 2010, a video entitled " Best Cry Ever " was posted on the popular video-sharing site YouTube, featuring a clip from Season 7 episode " Rocky ", which told the story of former professional boxer Rocky Lockridge, who lost everything, including contact with his sons, to drugs.