World Parkinson’s Day
World Parkinson's Day raises awareness about Parkinson's disease, honors Dr. James Parkinson, and supports global efforts toward better care.
Saturday
What holiday is on April 11?
16 holidays and observances fall on April 11.
International Louie Louie Day
International Louie Louie Day is a global celebration of the iconic rock song and its creator held every April 11.
Global Day to End Child Sexual Abuse
Global Day to End Child Sexual Abuse is an international awareness day observed every year on April 11.
Day of Nazi Concentration Camps Prisoners Liberation
The International Day of the Liberation of Nazi Concentration Camps is a memorial day held every April 11.
National Pet Day
National Pet Day is an annual observance on April 11 that celebrates animal companions and promotes pet adoption.
National Barbershop Quartet Day
National Barbershop Quartet Day honors the founding of the barbershop harmony movement every April 11.
National Submarine Day
National Submarine Day is an annual observance on April 11 marking the U.S. Navy's acquisition of its first modern submarine.
National Poutine Day
National Poutine Day is a food holiday celebrating the classic Canadian dish annually on April 11.
Dog Therapy Appreciation Day
Dog Therapy Appreciation Day is an annual event held on April 11 to honor therapy dogs and their handlers.
National Catch and Release Day
National Catch and Release Day is a conservation event observed on the second Saturday of April.
National Cheese Fondue Day
National Cheese Fondue Day is a food holiday celebrating the classic Swiss melted cheese dish every April 11.
National Eight Track Tape Day
National Eight Track Tape Day is a nostalgic celebration of the classic audio format held annually on April 11.
National Ranch Water Day
National Ranch Water Day is a celebration of the famous Texas tequila cocktail held every April 11.
National Clean Up Your Pantry Day
National Clean Up Your Pantry Day is an annual spring cleaning event held on April 11 to organize food storage.
National Marketing Operations Appreciation Day
National Marketing Operations Appreciation Day honors the professionals who manage marketing technology and data annually on April 11.
Grand National Festival Race Card
The Grand National Festival Race Card is the official schedule for the Aintree horse racing event held each April.
Coming up next
Orthodox Easter Day
Orthodox Easter, or Pascha, is the most significant celebration in Eastern Orthodox Christianity, commemorating the resurrection of Jesus Christ.
International Day of Human Space Flight
The International Day of Human Space Flight is a global tribute to space exploration observed every April 12.
World Hamster Day
World Hamster Day is an annual celebration of the history and care of pet hamsters held on April 12.
International Day for Street Children
International Day for Street Children highlights the challenges faced by street-connected children worldwide and advocates for their rights.
Divine Mercy Sunday
Divine Mercy Sunday is a Catholic feast day celebrated annually on the second Sunday of the Easter season.
Good Deeds Day
Good Deeds Day is a global celebration of kindness held annually on a Sunday in March or April.
Deskfast Day
Deskfast Day is an annual celebration of eating breakfast at the office observed on April 12.
National Grilled Cheese Sandwich Day
National Grilled Cheese Sandwich Day is an annual celebration of the classic comfort food held on April 12.
Browse the calendar
Fewer
More holidays
Saved by you