World Book and Copyright Day

World Book Day or World Book and Copyright Day is a yearly event on 23 April, organized by UNESCO to promote reading, publishing and copyright. It is also known as International Day of the Book or World Book Days.  In the United Kingdom, the day is instead recognized on the first Thursday in March. World Book Day was celebrated for the first time on 23 April 1995.

The first video was uploaded to YouTube.com

YouTube is a video-sharing website, created by three former PayPal  employees in February 2005, on which users can upload, view and share videos.The first YouTube video was entitled Me at the zoo,and shows co-founder Jawed Karim at the San Diego Zoo. The video was uploaded on April 23, 2005, and can still be viewed on the site.

Steve Fossett

James Stephen "Steve" Fossett was an American businessman, and a record-setting aviator, sailor, and adventurer. He was Born on April 22, 1944 and he was the first person to fly solo nonstop around the world in a balloon and first to cross Pacific in a balloon. He died on September 3, 2007.

The first human eye transplant

On April 22, 1969, doctors at Methodist Hospital in Houston performed what was billed as the first human eye transplant on John Madden, 54, owner of a photography studio. The donor eye was taken from a man who had died of a brain tumor and the donor cornea,lens and iris were given to Madden. Although the transplant failed to restore Madden's sight--it has been reported that the donor eye was not preserved enough to keep it viable--the historic procedure was considered a medical miracle.

Earth Day

 

Earth Day is an annual day on which events are held worldwide to demonstrate support for environmental protection. Earth Day is observed on April 22 each year. The April 22 date was designated as International Mother Earth Day by a consensus resolution adopted by the UN in 2009. It is celebrated in more than 192 countries every year.

Thrissur Pooram

 

Thrissur Pooram  is one of the most popular temple festivals of the South Indian state Kerala. It is held at Vadakkunnathan every year on 'Pooram'  day of the Malayalam Calender month of 'Medam'. 'Pooram' day is the day when the moon rises with the Pooram star. In 2013 its Pooram is on April 21.

 

The World Digital Library.

On 21 April 2009 UNESCO along with 32 partner institutions  launched The World Digital Library. The World Digital Library (WDL) is an international digital library operated by UNESCO and the United States Library of Congress. The web site features free unlimited access to cultural material from around the world, including manuscripts, maps, rare books, films, sound recordings, prints, and photographs.

Adolf Hitler

Adolf Hitler was an Austrian-born German politician and the leader of the Nazi Party.He was born on on 20 April 1889 and committed suicide by gunshot on 30 April 1945.

Karl Alexander Müller

 

Karl Alexander Müller was born on April 20, 1927, he is a Swiss physicist and Nobel laureate. He received the Nobel Prize in Physics in 1987 with Georg Bednorz (http://datesupdates.blogspot.in/2013/05/j-georg-bednorz.html) for their work in superconductivity in ceramic materials.

India's first satellite launched

Aryabhata was India's first satellite, named after the great Indian astronomer of the same name. It was launched by the Soviet Union on 19 April 1975 from Kapustin Yar using a Cosmos-3M launch vehicle.launch vehicle. It was built by the Indian Space Research Organization (ISRO) to gain experience in building and operating a satellite in space.

World Heritage Day

World Heritage Day is held on 18th of April every year. Its a day that represents the unique identities and cultures of the various countries and peoples of the world

World Hemophilia Day

World Hemophilia Day is an international observance  held annually on April 17 by the World Federation of Hemophilia  (WFH). It is awareness day awareness day for hemophilia and other bleeding disorders, which also serves to raise funds  and attract volunteers for the WFH. It was started in 1989; April 17 was chosen in honor of Frank Schnabel's birthday.

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Lara Dutta Bhupathi

Lara Dutta Bhupathi  was born 16 April 1978. She is an Indian Bollywood actress and Miss Universe 2000.

Wilbur Wright

Wilbur Wright, the co- inverter of airplane was born on April 16.1867and died on May30,1972.
 The Wright brothers  (Orville & Wilbur ) were two American brothers, inventors, and aviation pioneers who were credited with inventing and building the world's first successful airplane and making the first controlled, powered and sustained heavier-than-air human flight, on December 17, 1903.

First black Mayor of Chicago

Harold Lee Washington was born on April 15, 1922, he  was an American lawyer and politician who became the first African-American Mayor of Chicago serving from 1983 until his death on November 25, 1987.

Johannes Stark - Stark effect

Johannes Stark was born on April 15, 1874, he was a German physicist, and Physics Nobel Prize laureate who was closely involved with the Deutsche Physik movement under the Nazi regime. He died on 21 June 1957. He discovered the Stark effect. It is the shifting and splitting of spectral lines of atoms and molecules due to presence of an external static electric field.

 

1st Olympic games close at Athens

The 1896 Summer Olympics, officially known as the Games of the I Olympiad, was a multi-spot event  held in Athens, Greece, from April 6 to April 15, 1896. It was the first international Olympic Games held in the Modern era.

Titanic Sank

RMS Titanic was a British passenger liner that sank in the North Atlantic Ocean on 15 April 1912 ( Hit an iceberg 11:40 pm (ship's time) 14 April 1912 on her maiden voyage and sank 2h 40m later) after colliding with an iceberg during her maiden voyage from from Southampton, UK to New York City ( US ).

Vishu - Equal

"Vishu" in Sanskrit means "equal". 

Vishu is a Hindu festival celebrated in the Indian state of Kerala and in the Tulunadu region(Mangalore & Udupi districts) usually in the second week of April in  the Gregorian calender .It marks the new year in accordance with Kolla varsham the Malayalam calendar. In 2013 Vishu is celebrated on April 14.