Jan Wahl born, 1933

April Fool's Day

One Cent Day

MP3 audio format first patented in Germany (1989), by Fraunhofer-Gesellshaft

Author Hans Christian Andersen born, 1805

International Children's Book Day

First Documented Ice Cream Sundae Made in 1892

Find-A-Rainbow Day

Pony Express established (1860)

First iPad sold in the U.S. in 2010

First U.S. flag approved (1818)

National Read a Road Map Day

Educator Booker T. Washington born, 1856

Richard Peck born, 1934

North Pole Discovered In 1898.

U.S. entered World War I (1917)

No Housework Day

World Health Day, established 1948

Trina Schart Hyman born, 1939

Robert E. Lee surrendered to Ulysses S. Grant (1865)

Margaret Peterson Haddix born, 1964

Encourage a Young Writer Day

National Sibling Day

David A. Adler born, 1947

U.S. Patent System established (1790)

President Johnson signs the Civil Rights Act, 1964 (1964)

Author Beverly Cleary born, 1916

Space Shuttle Columbia First Launched Crewed by John Young and Robert Crippen - 1981

3rd President Thomas Jefferson born, 1743

Lee Bennett Hopkins born, 1938

Webster's Dictionary Published, 1828

Titanic Struck an iceberg shortly before midnight on April 14 causing it to sink at 2:20 AM on April 15.

Income Tax Day

Boston Marathon bombings, 2013

Artist/Inventor Leonardo Da Vinci born, 1452

Garth Williams born, 1912

Aviator Wilbur Wright born, 1867

Kareem Abdul-Jabbar born, 1947

Sherlock Hemlock's Birthday (Sesame Street character)

Richard the Lion-Hearted returned to England (1194)

Paul Revere's Famous Ride (1775)

First Laundromat Opens In Fort Worth Texas (1934)

Great San Francisco Earthquake In 1906.

Pet Owner's Day

Humorous Day

Revolutionary War began (1775)

Scientists Marie & Pierre Curie isolate radium (1902)

Kindergarten Day

Barbara Park born, 1947

Administrative Professionals/ Secretaries Day

Kurt Wiese born, 1887

Earth Day established 1970

Girl Scout Leader Appreciation Day

National Jelly Bean Day

Eileen Christelow born, 1943

Take Our Daughters and Sons to Work Day

Take your Daughter to Work Day

Home Run Day Hank Aaron hits his first home run in 1954.

William Shakespeare born, 1564

Arbor Day

Evaline Ness born, 1911

Library of Congress established (1800)

Pigs-in-a-Blanket Day

Walter de la Mare born, 1873

Anzac Day (Australia, New Zealand)

Hubble Telescope launched, 1990

World Penguin Day

Hug a Friend Day

National Pretzel Day

Seismologist Charles Richter born, 1900

Tell a Story Day

Walter Lantz born, 1899 (The creator of Woody Woodpecker)

James Monroe born, 1758 (5th President)

Zipper Day (patented by Gideon Sundback in 1913)

National Honesty Day

Anniversary Louisiana Purchase completed (1803)