April Fool's Day

Canada's First Lighthouse Lit (1733)

RCAF Founded (1924)

Nunavut Separated from Northwest Territories (1999)

Int'l Children's Book Day

World Autism Awareness Day

Hans Christian Andersen's Birthday (1805)

CN Tower Completed (1975)

Jane Goodall's Birthday (1934)

Easter

NATO Created (1949)

Martin L. King Jr. Assassinated (1968)

Nat'l Wildlife Week

Helen Keller First Learned Sign Language (1887)

Ripple Rock Explosion (1958)

Tartan Day

First Modern Olympics (1896)

North Pole First Reached (1909)

U.N. World Health Day

Thomas D'Arcy McGee Killed (1868)

Billie Holiday's Birthday (1915)

Actress Mary Pickford's Birthday (1892)

Name Yourself Day

Vimy Ridge Day

First Full-Color Film Shown (1914)

Encourage a Young Writer Day

Joseph Pulitzer's Birthday (1847)

Conservationist Jack Miner's Birthday (1865)

Holocaust Remembrance Day

Treaty of Utrecht Signed (1713)

Einstein Revealed Theory of Relativity (1905)

First Man in Space (1961)

Terry Fox Began Marathon of Hope (1980)

RCMP Unofficial Slogan Coined (1877)

Oxygen Tank Burst on Apollo 13 (1970)

Moment of Laughter Day

Webster's First Dictionary Copyrighted (1828)

The Titanic Hit Iceberg (1912)

Leonardo da Vinci's Birthday (1452)

Bergen-Belsen Liberated (1945)

First Nat'l Lotto Winners (1974)

Wilbur Wright's Birthday (1867)

Wayne Gretzky Retired (1999)

30-Hour Famine

Nat'l Equality Day

Daffy Duck Debuted (1937)

Constitution Act Signed (1982)

Int'l Jugglers Day

Jackie Robinson Makes Professional Baseball Debut (1946)

Nat'l Victims of Crime Awareness Week

Nat'l Volunteer Week

American Revolution Began (1775)

Great Toronto Fire (1904)

TV-Turnoff Week

Big Ben's Birthday (1976)

Columbine High School Shooting Killed 15 (1999)

City of Rome Founded (753 BC)

Kindergarten Day

QE II's Birthday (1926)

Earth Day

First Earth Day Observed (1970)

World Book & Copyright Day

Shakespeare's Birthday (1564)

Lester B. Pearson's Birthday (1897)

Global Youth Service Day

Astronomy Day

Mailbox Inventor Born (1815)

Rebellion Losses Bill Signed (1849)

Ella Fitzgerald's Birthday (1917)

St. Lawrence Seaway Opened (1949)

A.E. van Vogt's Birthday (1912)

Chernobyl Nuclear Reactor Disaster (1986)

York Captured by U.S. (1813)

Nat'l Day of Mourning

Expo '67 Opened in Montreal (1967)

Int'l Dance Day

Zipper Patented (1842)

Duke Ellington's Birthday (1899)

Bishop François de Laval's Birthday (1623)

Vietnam War Ended (1975)