* 1974 – The Super Outbreak occurs, the second biggest tornado outbreak in recorded history ( after the April 25-28, 2011 tornado outbreak ).

** Ai Weiwei ( born 1957 ), Chinese artist, curator, architectural designer, cultural and social commentator, dissident, disappeared April 2011

On April 28, 2011 Georgia Governor Nathan Deal signed legislation allowing local communities to vote on whether to allow alcohol sales on Sundays.

After the second terminal of International Airport Sofia was built the total number of passengers rose and reached 3 230 696 in 2008, and in April 2011 Airport Sofia serviced 282 694 passengers, 13 % more than the same period of 2009, when the record was 250 000 passengers.

| 18 April 2011

On April 18, 2011, it was reported that a military mutiny in Burkina Faso had spread to a fourth city, Kaya, after demonstrations in Po and Tenkodogo.

On 22 April 2011, French culture minister Frédéric Mitterrand officially inscribed bullfighting on a list enumerating the country's cultural heritage, a decision which Bardot is currently publicly contesting.

In April 2011, a representative for Andrews McMeel received a package from a " William Watterson in Cleveland Heights, Ohio ", which contained a 6 " x 8 " oil-on-board painting of Cul De Sac character Petey Otterloop, done by Watterson for the Team Cul de Sac fundraising project for Parkinson's Disease.

The movie was first aired on April 17, 2011.

On 15 April 2011, a day before his 122nd birthday anniversary, Google celebrated him with a special Google Doodle video on its global and other country-wide homepages.

The latest census in Croatia was performed in April 2011.

In April 2011, Chaosium and new developer Red Wasp Design announced a joint project to produce a mobile video game based on the Call of Cthulhu RPG entitled Call of Cthulhu: The Wasted Land.

On April 12, 2011, she played live through video link for the audience of Jethro Tull's show in Russia in honour of the 50th anniversary of Yuri Gagarin's flight.

In April 2011, Limehouse Library having closed in 2003, the Attlee statue was unveiled in its new home at Queen Mary University of London.

In November 2011, Charles took time off from Coronation Street to film a new series of Red Dwarf, returning to filming on ' Corrie ' in April 2012.

In April 2011 the Columbia University Senate voted to welcome the ROTC program back on campus.

* On 3 April 2011, Fulham unveiled a statue of Michael Jackson inside the stadium before its match with Blackpool.

This started in April and would develop during the year and into early 2011.

The last census was taken in 2011 ( from April 1 to April 28 ).

But due to some internal problems, the census was delayed till start of 2011 and its first phase was started in April allover the country.

The 2011 Cricket World Cup was co-hosted by Bangladesh, India, and Sri Lanka from 19 February to 2 April 2011.

According to the project's Facebook group, the English-language DVD has been released in Denmark on April 16, 2011 and is available internationally through the website forlaget-afart. dk /.

The book was originally made as a gift by papersera. net for Rosa himself upon the occasion of Rosa's April 2011 visit to Turin, Italy, and is available as a print-on-demand book from Lulu. com ( see link at papersera. net site on the book )

In 1931, the castle gardens were first opened to the public, and are now open daily between April and the end of July, after which the Queen arrives for her annual stay.

In a formal ceremony on Parliament Hill in Ottawa, Queen Elizabeth II signed both acts into law on 17 April 1982.

In April 1992 Bowie appeared at the Freddie Mercury Tribute Concert, following the Queen frontman's death the previous year.

In April the Spanish ambassador, Bernardino de Mendoza, wrote to King Philip of Spain that it had been proposed that if Anjou were to travel to England to negotiate his marriage to the Queen, Oxford, Surrey and Windsor should be hostages for his safe return.

Lord and Lady Mountbatten had two daughters: Patricia Mountbatten, 2nd Countess Mountbatten of Burma ( born on 14 February 1924 ), sometime lady-in-waiting to the Queen, and Lady Pamela Carmen Louise ( Hicks ) ( born on 19 April 1929 ), who accompanied them to India in 1947-48 and was also sometime lady-in-waiting to the Queen.

Even so, the patriation was achieved ; the Constitution Act, 1982 was proclaimed by Queen Elizabeth on April 17, 1982.

" To promote the forthcoming album Robyn released the songs " Fembot ", " Dancehall Queen " and " None of Dem " ( featuring Röyksopp ) to digital outlets as promotional singles on 13 April 2010.

According to his The New York Times obituary published on April 3, 1872, Morse received respectively the decoration of the Atiq Nishan-i-Iftikhar ( English: Order of Glory ) medal on wearer's right depicted in photo of Morse with medals, set in diamonds, from the Sultan Ahmad I ibn Mustafa of Turkey ( c. 1847 ), a golden snuff box containing the Prussian gold medal for scientific merit from the King of Prussia ( 1851 ); the Great Gold Medal of Arts and Sciences from the King of Württemberg ( 1852 ); and the Great Golden Medal of Science and Arts from Emperor of Austria ( 1855 ); a cross of Chevalier in the Légion d ' honneur from the Emperor of France ; the Cross of a Knight of the Order of the Dannebrog from the King of Denmark ( 1856 ); the Cross of Knight Commander of the Order of Isabella the Catholic, from the Queen of Spain, besides being elected member of innumerable scientific and art societies in this States and other countries.

On April 20, 1960, Sir Milton Margai led the twenty four members of the Sierra Leonean delegation at the constitutional conferences that were held with Queen Elizabeth II and British Colonial Secretary Iain Macleod in the negotiations for independence held at the Lancaster House in London.

This bill, which after substantial amendments was granted Royal Assent on 5 April 1710, became known as the Statute of Anne due to its passage during the reign of Queen Anne.

Whatever the motivations, the bill was passed on 5 April 1710, and is commonly known simply as the Statute of Anne due its passage during the reign of Queen Anne.

* 30 April: " Koninginnedag " (" Queen's Day ") is a Dutch national holiday held on the birthday of former Queen Juliana.

* April 5 – Sālote succeeds as Queen of Tonga ; she will remain on the throne until her death in 1965.

* April 16 – Princess Alexandra of Edinburgh and Saxe-Coburg-Gotha, granddaughter of Queen Victoria

* April 10 – Queen Isabella II of Spain ( b. 1830 )

* April 21 – The Great Bookie Robbery in Melbourne: Bandits steal A $ 1. 4 million in bookmakers ' settlements from Queen Street, Melbourne.

* April 16 – Queen Margrethe II of Denmark

* April 25 – Queen Emma of Hawaii ( b. 1836 )

* April 17 – By Proclamation of the Queen of Canada on Parliament Hill, Canada patriates its constitution, gaining full political independence from the United Kingdom ; included is the country's first entrenched bill of rights.

* April 14 – Princess Beatrice, youngest child of Queen Victoria ( d. 1944 )

* April 26 – The Prince Albert, Duke of York ( later George VI, King of the United Kingdom ) marries Lady Elizabeth Bowes-Lyon ( later Queen Elizabeth The Queen Mother ) in Westminster Abbey.

* April 22 – Queen Isabella I of Castile ( d. 1504 )