Monthlong Observances
International Guitar Month
International Twit Award Month
Jazz Appreciation Month
Keep America Beautiful Month
Lawn & Garden Month
National BLT Sandwich Month
National Garden Month
National Garlic Month
National Grilled Cheese Sandwich Month
National Humor Month
National Pecan Month
National Poetry Month
National Soft Pretzel Month
National Soyfoods Month
National Welding Month
Sexual Assault Awareness Month
Stress Awareness Month
April
Days in April
- April Fool's Day, International Tatting Day, International Tongue Twister Day, International Fun At Work Day, National Baked Ham With Pineapple Day, National Sourdough Bread Day, National Walking Day, National Soylent Green Day, One Cent Day
- World Autism Day, International Children's Book Day, National Burrito Day, National Ferret Day, National Peanut Butter & Jelly Day, Great Lovers Day, Reconciliation Day
- Intergalactic Fish Fingers And Custard Day, World Party Day, National Walk To Work Day, National Chocolate Mousse Day, Find A Rainbow Day, Pony Express Day, Tweed Day, Don't Go To Work Unless It's Fun Day, Monty Python And The Holy Grail Day
- World Rat Day, International Tabletop Game Day, International Carrot Day, National Love Our Children Day, National Ramen Noodles Day, National Chicken Cordon Bleu Day, School Librarian Day, Hug A Newsman Day, Vitamin C Day, Tell A Lie Day
- National Deep Dish Pizza Day, National Caramel Day, National Raisin And Spice Bar Day, Geologists Day, Go For Broke Day, First Contact Day
- International Pillow Fight Day, International Carbonara Day, National Caramel Corn Day, National Student Athlete Day, Drowsy Driver Awareness Day, Army Day, Tartan Day, Sorry Charlie Day, Fresh Tomato Day
- World Health Organization Day, World Anemia Day, International Beaver Day, National Healthy Schools Day, National Beer Day, National Coffee Cake Day, National Handmade Day, National "Girl, Me Too" Day, Metric System Day, No Housework Day, Public Television Day
- International Romani Day, National Empanada Day, Draw A Picture Of A Bird Day, Trading Cards For Grownups Day, Dog Farting Awareness Day, All Is Ours Day, Zoo Lovers Day, Step Into The Spotlight! Day
- National Unicorn Day, National Former Prisoner of War Recognition Day, National Chinese Almond Cookie Day, National Cherish An Antique Day, Winston Churchill Day, Name Yourself Day
- National Encourage A Young Writer Day, National Sibling Day, National Farm Animals Day, National Cinnamon Crescent Day, Equal Pay Day, One Day Without Shoes Day, Safety Pin Day, Golfer's Day
- World Parkinson's Disease Day, International "Louie Louie" Day, National Cheese Fondue Day, National Submarine Day, National Pet Day, Barbershop Quartet Day, Eight-Track Tape Day, Dog Therapy Appreciation Day, Baby Massage Day
- Easter Sunday (Western), International Day of Human Space Flight, National Grilled Cheese Sandwich Day, National Licorice Day, Big Wind Day, Day of Silence, Support Teen Literature Day, Russian Cosmonaut Day, Walk On Your Wild Side Day, Drop Everything And Read Day
- National Diarrhea Day, National Peach Cobbler Day, Dyngus Day, Scrabble Day, Thomas Jefferson Day
- International Moment of Laughter Day, National Dolphin Day, National Pecan Day, Pan American Day, Dictionary Day, Reach As High As You Can Day, Look Up At The Sky Day, Mystery Science Theater 3000 Day
- World Art Day, National Glazed Ham Day, National Griper's Day, Take A Wild Guess Day, McDonalds Day, Microvolunteering Day, That Sucks Day, Rubber Eraser Day
- World Voice Day, National Librarian Day, National Health Care Decisions Day, National Eggs Benedict Day, National High Five Day, Wear Your Pajamas To Work Day, Day of the Mushroom, Save The Elephant Day
- World Hemophilia Day, International Malbec Day, National Haiku Poetry Day, National Cheese Ball Day, Bat Appreciation Day, Blah! Blah! Blah! Day, Nothing Like A Dame Day
- International Amateur Radio Day, International Juggler's Day, National Velociraptor Awareness Day, National Record Store Day, National Golf Day, National Columnists Day, National Animal Crackers Day, National Piñata Day, Husband Appreciation Day
- Pascha (Orthodox Easter), National Movie Riffing Day, National Oklahoma City Bombing Commemoration Day, National Garlic Day, National Rice Ball Day, National Hanging Out Day, National Amaretto Day, Pet Owners Day, Bicycle Day, Primrose Day
- World Frog Day, National Day Of Silence, National Pot Smokers Day, National Pineapple Upside-Down Cake Day, Look Alike Day, Lima Bean Respect Day, Volunteer Recognition Day, Patriots' Day
- International Astronomy Day, National Library Workers Day, National Tea Day, National Chocolate-Covered Cashews Day, Kindergarten Day, Bulldogs Are Beautiful Day, Keep Off The Grass Day
- Earth Day, National Bookmobile Day, National Jelly Bean Day, Administrative Professionals' Day, Girl Scout Leader Day
- World Book Night, World Copyright Day, World Laboratory Animal Day, UN English Language Day, National Cherry Cheesecake Day, National Picnic Day, Take A Chance Day, Movie Theater Day, Talk Like Shakespeare Day, Take Our Daughters & Sons To Work Day, German Beer Day
- Arbor Day (U.S.), National Teach Your Children To Save Day, National Pigs In A Blanket Day, Genocide Remembrance Day, Sauvignon Blanc Day
- World Penguin Day, International Marconi Day, National Crotilla Day, National Zucchini Bread Day, National Telephone Day, National Mani-Pedi Day, National DNA Day, Hug A Plumber Day, Hairstylists Appreciation Day, East Meets West Day, Red Hat Society Day
- National No Makeup Day, National Pretzel Day, Alien Day, Richter Scale Day, Poem In Your Pocket Day, Audubon Day, Hug An Australian Day, Help A Horse Day
- World Healing Day, World Graphics Day, International Crow And Raven Appreciation Day, National Prime Rib Day, National Go Birding Day, Babe Ruth Day, Tell A Story Day, Woody Woodpecker Day
- National Superhero Day, National Blueberry Pie Day, Save The Frogs Day, Biological Clock Day, Great Poetry Reading Day
- World Wish Day, International Dance Day, International Guide Dogs Day, National Peace Rose Day, National Hairball Awareness Day, National Shrimp Scampi Day, Zipper Day, Greenery Day, Denim Day
- International Jazz Day, National Honesty Day, National Mr. Potato Head Day, National Raisin Day, National Oatmeal Cookie Day, Bugs Bunny Day, Hairstyle Appreciation Day