List of Special Days and National Days in May 2018 in United States.
- National Concert Day 2018 is observed on Tuesday, May 1, 2018
- Poem on Your Pillow Day 2018 is observed on Tuesday, May 1, 2018
- World Asthma Day 2018 is observed on Tuesday, May 1, 2018
- Great American Grump Out 2018 is observed on Wednesday, May 2, 2018
- National Anxiety Disorders Screening Day 2018 is observed on Wednesday, May 2, 2018
- Lag BaOmer 2018 will begin in the evening of Wednesday, May 2 and ends in the evening of Thursday, May 3, 2018
- Martin Z. Mollusk Day 2018 is observed on Thursday, May 3, 2018
- National Day of Prayer 2018 is observed on Thursday, May 3, 2018
- National Day of Reason 2018 is observed on Thursday, May 3, 2018
- World Password Day 2018 is observed on Thursday, May 3, 2018
- International Space Day 2018 is observed on Friday, May 4, 2018
- International Tuba Day 2018 is observed on Friday, May 4, 2018
- No Pants Day 2018 is observed on Friday, May 4, 2018
- Beer Pong Day 2018 is observed on Saturday, May 5, 2018
- Bladder Cancer Awareness Day 2018 is observed on Saturday, May 5, 2018
- Childhood Stroke Awareness Day 2018 is observed on Saturday, May 5, 2018
- HerbDay 2018 is observed on Saturday, May 5, 2018
- Free Comic Book Day 2018 is observed on Saturday, May 5, 2018
- Join Hands Day 2018 is observed on Saturday, May 5, 2018
- Kentucky Derby 2018 is observed on Saturday, May 5, 2018
- National Homebrew Day 2018 is observed on Saturday, May 5, 2018
- National Scrapbooking Day 2018 is observed on Saturday, May 5, 2018
- Pilates Day 2018 is observed on Saturday, May 5, 2018
- International Bereaved Mother’s Day 2018 is observed on Sunday, May 6, 2018
- International Permaculture Day 2018 is observed on Sunday, May 6, 2018
- Mayday for Mutts 2018 is observed on Sunday, May 6, 2018
- Motorcycle Mass and Blessing of the Bikes Day 2018 is observed on Sunday, May 6, 2018
- Lemonade Day 2018 is observed on Sunday, May 6, 2018
- National Infertility Survival Day 2018 is observed on Sunday, May 6, 2018
- World Laughter Day 2018 is observed on Sunday, May 6, 2018
- No Homework Day 2018 is observed on Sunday, May 6, 2018
- Great Lakes Awareness Day 2018 is observed on Monday, May 7, 2018
- Melanoma Monday 2018 is observed on Monday, May 7, 2018
- National Meeting Planners Appreciation Day 2018 is observed on Monday, May 7, 2018
- Childhood Depression Awareness Day 2018 is observed on Tuesday, May 8, 2018
- National Teacher Day 2018 is observed on Tuesday, May 8, 2018
- Bike To School Day 2018 is observed on Wednesday, May 9, 2018
- Donate a Day’s Wages to Charity Day 2018 is observed on Wednesday, May 9, 2018
- National Root Canal Appreciation Day 2018 is observed on Wednesday, May 9, 2018
- National Receptionists’ Day 2018 is observed on Wednesday, May 9, 2018
- National School Nurse Day 2018 is observed on Wednesday, May 9, 2018
- National Third Shift Workers Day 2018 is observed on Wednesday, May 9, 2018
- Occupational Safety and Health Professional Day 2018 is observed on Wednesday, May 9, 2018
- Ascension 2018 is observed on Thursday, May 10, 2018
- Make-A-Book Day 2018 is observed on Thursday, May 10, 2018
- National Children’s Mental Health Awareness Day 2018 is observed on Thursday, May 10, 2018
- Fintastic Friday: Giving Sharks a Voice 2018 is observed on Friday, May 11, 2018
- Military Spouse Appreciation Day 2018 is observed on Friday, May 11, 2018
- National Public Gardens Day 2018 is observed on Friday, May 11, 2018
- Provider Appreciation Day 2018 is observed on Friday, May 11, 2018
- American Indian Day 2018 is observed on Saturday, May 12, 2018
- Birthmother’s Day 2018 is observed on Saturday, May 12, 2018
- Brunch for Lunch Day 2018 is observed on Saturday, May 12, 2018
- Cornelia de Lange Syndrome Awareness Day 2018 is observed on Saturday, May 12, 2018
- International Migratory Bird Day 2018 is observed on Saturday, May 12, 2018
- Letter Carrier’s Stamp Out Hunger Food Drive Day 2018 is observed on Saturday, May 12, 2018
- Mother Ocean Day 2018 is observed on Saturday, May 12, 2018
- National Babysitter’s Day 2018 is observed on Saturday, May 12, 2018
- National Animal Disaster Preparedness Day 2018 is observed on Saturday, May 12, 2018
- National Miniature Golf Day 2018 is observed on Saturday, May 12, 2018
- National Train Day 2018 is observed on Saturday, May 12, 2018
- Stay Up All Night Night 2018 is observed on Saturday, May 12, 2018
- Sun Awareness Day 2018 is observed on Saturday, May 12, 2018
- World Belly Dance Day 2018 is observed on Saturday, May 12, 2018
- World Fair Trade Day 2018 is observed on Saturday, May 12, 2018
- Jerusalem Day 2018 in Israel began in the evening of Saturday, May 12 and ends in the evening of Sunday, May 13, 2018
- Mother’s Day 2018 is observed on Sunday, May 13, 2018
- Mothers at the Wall Day 2018 is observed on Sunday, May 13, 2018
- National Apple Pie Day 2018 is observed on Sunday, May 13, 2018
- National Veal Ban Action Day 2018 is observed on Sunday, May 13, 2018
- National Women’s Check-Up Day 2018 is observed on Monday, May 14, 2018
- Dinosaur Day 2018 is observed on Tuesday, May 15, 2018
- Sex Differences in Health Awareness Day 2018 is observed on Tuesday, May 15, 2018
- National Employee Health and Fitness Day 2018 is observed on Wednesday, May 16, 2018
- Turn Beauty Inside Out Day 2018 is observed on Wednesday, May 16, 2018
- Brown Bag It Thursday 2018 is observed on Thursday, May 17, 2018
- Hummus Day 2018 is observed on Thursday, May 17, 2018
- National Apéritif Day 2018 is observed on Thursday, May 17, 2018
- National Notebook Day 2018 is observed on Thursday, May 17, 2018
- Endangered Species Day 2018 is observed on Friday, May 18, 2018
- NASCAR Day 2018 is observed on Friday, May 18, 2018
- International Virtual Assistants Day 2018 is observed on Friday, May 18, 2018
- National Bike to Work Day 2018 is observed on Friday, May 18, 2018
- National Defense Transportation Day 2018 is observed on Friday, May 18, 2018
- O. Henry Pun-off Day 2018 is observed on Friday, May 18, 2018
- National Pizza Party Day 2018 is observed on Friday, May 18, 2018
- Armed Forces Day 2018 is observed on Saturday, May 19, 2018
- Culture Freedom Day 2018 is observed on Saturday, May 19, 2018
- National River Cleanup Day 2018 is observed on Saturday, May 19, 2018
- National Learn to Swim Day 2018 is observed on Saturday, May 19, 2018
- World Whisky Day 2018 is observed on Saturday, May 19, 2018
- Preakness Stakes 2018 is observed on Saturday, May 19, 2018
- Pentecost 2018 is observed on Sunday, May 20, 2018
- Shavuot 2018 began in the evening of Saturday, May 19 and ends in the evening of Monday, May 21, 2018
- World Baking Day 2018 is observed on Sunday, May 20, 2018
- Stepmother’s Day 2018 is observed on Sunday, May 20, 2018
- National Waiters and Waitresses Day 2018 is observed on Monday, May 21, 2018
- Emergency Medical Services for Children Day 2018 is observed on Wednesday, May 23, 2018
- Aviation Maintenance Technician Day 2018 is observed on Thursday, May 24, 2018
- Don’t Fry Day 2018 is observed on Friday, May 25, 2018
- European Neighbours’ Day 2018 is observed on Friday, May 25, 2018
- National Death Busters Day 2018 is observed on Friday, May 25, 2018
- National Heat Awareness Day 2018 is observed on Friday, May 25, 2018
- National Wig Out Day 2018 is observed on Friday, May 25, 2018
- National Title Track Day 2018 is observed on Friday, May 25, 2018
- Amateur Radio Military Appreciation Day 2018 is observed on Saturday, May 26, 2018
- Julia Pierpont Day 2018 is observed on Saturday, May 26, 2018
- Indianapolis 500 2018 is observed on Sunday, May 27, 2018
- Neighbor Day 2018 is observed on Sunday, May 27, 2018
- Trinity Sunday 2018 is observed on Sunday, May 27, 2018
- Memorial Day 2018 is observed on Monday, May 28, 2018
- International Coq Au Vin Day 2018 is observed on Tuesday, May 29, 2018
- National Senior Health and Fitness Day 2018 is observed on Wednesday, May 30, 2018
- World MS Day 2018 is observed on Wednesday, May 30, 2018
- Corpus Christi 2018 is observed on Thursday, May 31, 2018
- Couple Appreciation Day 2018 is observed on Tuesday, May 1, 2018
- CSS Reboot Day 2018 is observed on Tuesday, May 1, 2018
- Executive Coaching Day 2018 is observed on Tuesday, May 1, 2018
- International Workers’ Day 2018 is observed on Tuesday, May 1, 2018
- Global Love Day 2018 is observed on Tuesday, May 1, 2018
- The Start of International Drum Month 2018 is observed on Tuesday, May 1, 2018
- Frequent Flyer Day 2018 is observed on Tuesday, May 1, 2018
- Lei Day 2018 is observed on Tuesday, May 1, 2018
- Law Day 2018 is observed on Tuesday, May 1, 2018
- Loyalty Day 2018 is observed on Tuesday, May 1, 2018
- Keep Kids Alive Drive 25 Day 2018 is observed on Tuesday, May 1, 2018
- National Chocolate Parfait Day 2018 is observed on Tuesday, May 1, 2018
- Mother Goose Day 2018 is observed on Tuesday, May 1, 2018
- May Day 2018 is observed on Tuesday, May 1, 2018
- Phone in Sick Day 2018 is observed on Tuesday, May 1, 2018
- New Homeowners Day 2018 is observed on Tuesday, May 1, 2018
- National Purebred Dog Day 2018 is observed on Tuesday, May 1, 2018
- Silver Star Service Banner Day 2018 is observed on Tuesday, May 1, 2018
- Save the Rhino Day 2018 is observed on Tuesday, May 1, 2018
- School Principals’ Day 2018 is observed on Tuesday, May 1, 2018
- Worthy Wage Day 2018 is observed on Tuesday, May 1, 2018
- The Start of Syringomyelia Awareness Month 2018 is observed on Tuesday, May 1, 2018
- Baby Day 2018 is observed on Wednesday, May 2, 2018
- Brothers and Sisters Day 2018 is observed on Wednesday, May 2, 2018
- International Scurvy Awareness Day 2018 is observed on Wednesday, May 2, 2018
- National Truffle Day 2018 is observed on Wednesday, May 2, 2018
- National Fire Day 2018 is observed on Wednesday, May 2, 2018
- National Play Your Ukulele Day 2018 is observed on Wednesday, May 2, 2018
- World Tuna Day 2018 is observed on Wednesday, May 2, 2018
- Take a Baby to Lunch Day 2018 is observed on Wednesday, May 2, 2018
- Garden Meditation Day 2018 is observed on Thursday, May 3, 2018
- National Specially-abled Pets Day 2018 is observed on Thursday, May 3, 2018
- National Lumpy Rug Day 2018 is observed on Thursday, May 3, 2018
- National Raspberry Popover Day 2018 is observed on Thursday, May 3, 2018
- National Two Different Colored Shoes Day 2018 is observed on Thursday, May 3, 2018
- Public Radio Day 2018 is observed on Thursday, May 3, 2018
- Paranormal Day 2018 is observed on Thursday, May 3, 2018
- Wordsmith Day 2018 is observed on Thursday, May 3, 2018
- Sun Day 2018 is observed on Thursday, May 3, 2018
- World Press Freedom Day 2018 is observed on Thursday, May 3, 2018
- Anti-Bullying Day 2018 is observed on Friday, May 4, 2018
- Bird Day 2018 is observed on Friday, May 4, 2018
- Intergalactic Star Wars Day 2018 is observed on Friday, May 4, 2018
- National Candied Orange Peel Day 2018 is observed on Friday, May 4, 2018
- International Firefighters Day 2018 is observed on Friday, May 4, 2018
- National Orange Juice Day 2018 is observed on Friday, May 4, 2018
- National Weather Observers Day 2018 is observed on Friday, May 4, 2018
- National Kids Fitness Day 2018 is observed on Friday, May 4, 2018
- Renewal Day 2018 is observed on Friday, May 4, 2018
- Respect For Chickens Day 2018 is observed on Friday, May 4, 2018
- Petite and Proud Day 2018 is observed on Friday, May 4, 2018
- World Give Day 2018 is observed on Friday, May 4, 2018
- Cartoonists Day 2018 is observed on Saturday, May 5, 2018
- Cinco de Mayo 2018 is observed on Saturday, May 5, 2018
- International Midwives Day 2018 is observed on Saturday, May 5, 2018
- Museum Lover’s Day 2018 is observed on Saturday, May 5, 2018
- National Chocolate Custard Day 2018 is observed on Saturday, May 5, 2018
- National Hoagie Day 2018 is observed on Saturday, May 5, 2018
- Oyster Day 2018 is observed on Saturday, May 5, 2018
- Revenge of the Fifth 2018 is observed on Saturday, May 5, 2018
- Totally Chipotle Day 2018 is observed on Saturday, May 5, 2018
- International No Diet Day 2018 is observed on Sunday, May 6, 2018
- Joseph Brackett Day 2018 is observed on Sunday, May 6, 2018
- National Beverage Day 2018 is observed on Sunday, May 6, 2018
- National Crêpe Suzette Day 2018 is observed on Sunday, May 6, 2018
- National Nurses Day 2018 is observed on Sunday, May 6, 2018
- National Tourist Appreciation Day 2018 is observed on Sunday, May 6, 2018
- National Barrier Awareness Day 2018 is observed on Monday, May 7, 2018
- National Cosmopolitan Day 2018 is observed on Monday, May 7, 2018
- National Roast Leg of Lamb Day 2018 is observed on Monday, May 7, 2018
- Paste Up Day 2018 is observed on Monday, May 7, 2018
- National Tourism Day 2018 is observed on Monday, May 7, 2018
- Free Trade Day 2018 is observed on Tuesday, May 8, 2018
- Iris Day 2018 is observed on Tuesday, May 8, 2018
- National Coconut Cream Pie Day 2018 is observed on Tuesday, May 8, 2018
- No Socks Day 2018 is observed on Tuesday, May 8, 2018
- National Have a Coke Day 2018 is observed on Tuesday, May 8, 2018
- National Student Nurses Day 2018 is observed on Tuesday, May 8, 2018
- Time of Remembrance and Reconciliation for Those Who Lost Their Lives during the Second World War 2018 is observed on Tuesday, May 8, 2018
- Victory in Europe Day 2018 is observed on Tuesday, May 8, 2018
- World Ovarian Cancer Day 2018 is observed on Tuesday, May 8, 2018
- World Red Cross and Red Crescent Day 2018 is observed on Tuesday, May 8, 2018
- Hurray for Buttons Day 2018 is observed on Wednesday, May 9, 2018
- National Butterscotch Brownie Day 2018 is observed on Wednesday, May 9, 2018
- National Moscato Day 2018 is observed on Wednesday, May 9, 2018
- National Lost Sock Memorial Day 2018 is observed on Wednesday, May 9, 2018
- Tear the Tags Off the Mattress Day 2018 is observed on Wednesday, May 9, 2018
- National Clean Up Your Room Day 2018 is observed on Thursday, May 10, 2018
- National Shrimp Day 2018 is observed on Thursday, May 10, 2018
- National Small Business Day 2018 is observed on Thursday, May 10, 2018
- Trust Your Intuition Day 2018 is observed on Thursday, May 10, 2018
- World Lupus Day 2018 is observed on Thursday, May 10, 2018
- Eat What You Want Day 2018 is observed on Friday, May 11, 2018
- Hostess Cupcake Day 2018 is observed on Friday, May 11, 2018
- National Twilight Zone Day 2018 is observed on Friday, May 11, 2018
- International Awareness Day 2018 is observed on Saturday, May 12, 2018
- International Chronic Fatigue Syndrome Awareness Day 2018 is observed on Saturday, May 12, 2018
- International Nurses’ Day 2018 is observed on Saturday, May 12, 2018
- Limerick Day 2018 is observed on Saturday, May 12, 2018
- National Fibromyalgia Awareness Day 2018 is observed on Saturday, May 12, 2018
- Odometer Day 2018 is observed on Saturday, May 12, 2018
- National Nutty Fudge Day 2018 is observed on Saturday, May 12, 2018
- Cough Drop Day 2018 is observed on Sunday, May 13, 2018
- Frog Jumping Day 2018 is observed on Sunday, May 13, 2018
- International Hummus Day 2018 is observed on Sunday, May 13, 2018
- National Fruit Cocktail Day 2018 is observed on Sunday, May 13, 2018
- National Leprechaun Day 2018 is observed on Sunday, May 13, 2018
- Top Gun Day 2018 is observed on Sunday, May 13, 2018
- Tulip Day 2018 is observed on Sunday, May 13, 2018
- World Cocktail Day 2018 is observed on Sunday, May 13, 2018
- International Dylan Thomas Day 2018 is observed on Monday, May 14, 2018
- National Buttermilk Biscuit Day 2018 is observed on Monday, May 14, 2018
- National Dance Like a Chicken Day 2018 is observed on Monday, May 14, 2018
- The Stars and Stripes Forever Day 2018 is observed on Monday, May 14, 2018
- National Underground America Day 2018 is observed on Monday, May 14, 2018
- HG Awareness Day 2018 is observed on Tuesday, May 15, 2018
- International Conscientious Objectors Day 2018 is observed on Tuesday, May 15, 2018
- International Day of Families 2018 is observed on Tuesday, May 15, 2018
- International MPS Awareness Day 2018 is observed on Tuesday, May 15, 2018
- National Safety Dose Day 2018 is observed on Tuesday, May 15, 2018
- National Tuberous Sclerosis Day 2018 is observed on Tuesday, May 15, 2018
- National Chocolate Chip Day 2018 is observed on Tuesday, May 15, 2018
- Peace Officers Memorial Day 2018 is observed on Tuesday, May 15, 2018
- Relive Your Past By Listening to the First Music You Ever Bought No Matter What It Was No Excuses Day 2018 is observed on Tuesday, May 15, 2018
- Nylon Stockings Day 2018 is observed on Tuesday, May 15, 2018
- Straw Hat Day 2018 is observed on Tuesday, May 15, 2018
- Biographer’s Day 2018 is observed on Wednesday, May 16, 2018
- Love a Tree Day 2018 is observed on Wednesday, May 16, 2018
- National Coquilles St. Jacques Day 2018 is observed on Wednesday, May 16, 2018
- National Mimosa Day 2018 is observed on Wednesday, May 16, 2018
- National Piercing Day 2018 is observed on Wednesday, May 16, 2018
- National Sea Monkey Day 2018 is observed on Wednesday, May 16, 2018
- National Wear Purple for Peace Day 2018 is observed on Wednesday, May 16, 2018
- International Day Against Homophobia, Biphobia and Transphobia 2018 is observed on Thursday, May 17, 2018
- National Cherry Cobbler Day 2018 is observed on Thursday, May 17, 2018
- National Mushroom Hunting Day 2018 is observed on Thursday, May 17, 2018
- National Walnut Day 2018 is observed on Thursday, May 17, 2018
- National Pack Rat Day 2018 is observed on Thursday, May 17, 2018
- World Hypertension Day 2018 is observed on Thursday, May 17, 2018
- World Neurofibromatosis Awareness Day 2018 is observed on Thursday, May 17, 2018
- World Telecommunication and Information Society Day 2018 is observed on Thursday, May 17, 2018
- HIV Vaccine Awareness Day 2018 is observed on Friday, May 18, 2018
- I Love Reese’s Day 2018 is observed on Friday, May 18, 2018
- International Museum Day 2018 is observed on Friday, May 18, 2018
- Mother Whistler Day 2018 is observed on Friday, May 18, 2018
- National Cheese Soufflé Day 2018 is observed on Friday, May 18, 2018
- National No Dirty Dishes Day 2018 is observed on Friday, May 18, 2018
- National Visit Your Relatives Day 2018 is observed on Friday, May 18, 2018
- Send an Electronic Greeting Card Day 2018 is observed on Friday, May 18, 2018
- World AIDS Vaccine Day 2018 is observed on Friday, May 18, 2018
- Boy’s Club Day 2018 is observed on Saturday, May 19, 2018
- Celebrate Your Elected Officials Day 2018 is observed on Saturday, May 19, 2018
- May Ray Day 2018 is observed on Saturday, May 19, 2018
- National Asian and Pacific Islander HIV/AIDS Awareness Day 2018 is observed on Saturday, May 19, 2018
- National Devil’s Food Cake Day 2018 is observed on Saturday, May 19, 2018
- National Hepatitis Testing Day 2018 is observed on Saturday, May 19, 2018
- National Frog Jumping Jubilee Day 2018 is observed on Saturday, May 19, 2018
- World IBD Day 2018 is observed on Saturday, May 19, 2018
- Be a Millionaire Day 2018 is observed on Sunday, May 20, 2018
- Eliza Doolittle Day 2018 is observed on Sunday, May 20, 2018
- Flower Day 2018 is observed on Sunday, May 20, 2018
- Pick Strawberries Day 2018 is observed on Sunday, May 20, 2018
- National Quiche Lorraine Day 2018 is observed on Sunday, May 20, 2018
- Weights and Measures Day 2018 is observed on Sunday, May 20, 2018
- World Autoimmune Arthritis Day 2018 is observed on Sunday, May 20, 2018
- American Red Cross Founder’s Day 2018 is observed on Monday, May 21, 2018
- I Need a Patch for That Day 2018 is observed on Monday, May 21, 2018
- National Memo Day 2018 is observed on Monday, May 21, 2018
- National Strawberries and Cream Day 2018 is observed on Monday, May 21, 2018
- Rapture Party Day 2018 is observed on Monday, May 21, 2018
- Sister Maria Hummel Day 2018 is observed on Monday, May 21, 2018
- World Day for Cultural Diversity for Dialogue and Development 2018 is observed on Monday, May 21, 2018
- Canadian Immigrants Day 2018 is observed on Tuesday, May 22, 2018
- Harvey Milk Day 2018 is observed on Tuesday, May 22, 2018
- International Day for Biological Diversity 2018 is observed on Tuesday, May 22, 2018
- National Vanilla Pudding Day 2018 is observed on Tuesday, May 22, 2018
- National Maritime Day 2018 is observed on Tuesday, May 22, 2018
- National Buy a Musical Instrument Day 2018 is observed on Tuesday, May 22, 2018
- Sherlock Holmes Day 2018 is observed on Tuesday, May 22, 2018
- World Goth Day 2018 is observed on Tuesday, May 22, 2018
- Declaration of the Bab Day 2018 is observed on Wednesday, May 23, 2018
- International Day to End Obstetric Fistula 2018 is observed on Wednesday, May 23, 2018
- National Taffy Day 2018 is observed on Wednesday, May 23, 2018
- Lucky Penny Day 2018 is observed on Wednesday, May 23, 2018
- World Crohn’s and Colitis Day 2018 is observed on Wednesday, May 23, 2018
- World Turtle Day 2018 is observed on Wednesday, May 23, 2018
- Asparagus Day 2018 is observed on Thursday, May 24, 2018
- Brother’s Day 2018 is observed on Thursday, May 24, 2018
- International Tiara Day 2018 is observed on Thursday, May 24, 2018
- Scavenger Hunt Day 2018 is observed on Thursday, May 24, 2018
- National Escargot Day 2018 is observed on Thursday, May 24, 2018
- Geek Pride Day 2018 is observed on Friday, May 25, 2018
- National Brown-Bag-It Day 2018 is observed on Friday, May 25, 2018
- National Missing Children’s Day 2018 is observed on Friday, May 25, 2018
- National Tap Dance Day 2018 is observed on Friday, May 25, 2018
- Towel Day 2018 is observed on Friday, May 25, 2018
- National Wine Day 2018 is observed on Friday, May 25, 2018
- International Jazz Day 2018 is observed on Saturday, May 26, 2018
- National Blueberry Cheesecake Day 2018 is observed on Saturday, May 26, 2018
- National Paper Airplane Day 2018 is observed on Saturday, May 26, 2018
- National Cherry Dessert Day 2018 is observed on Saturday, May 26, 2018
- National Grey Day 2018 is observed on Saturday, May 26, 2018
- World Redhead Day 2018 is observed on Saturday, May 26, 2018
- Sally Ride Day 2018 is observed on Saturday, May 26, 2018
- World Lindy Hop Day 2018 is observed on Saturday, May 26, 2018
- World Dracula Day 2018 is observed on Saturday, May 26, 2018
- Cellophane Tape Day 2018 is observed on Sunday, May 27, 2018
- National Grape Popsicle Day 2018 is observed on Sunday, May 27, 2018
- Nothing To Fear Day 2018 is observed on Sunday, May 27, 2018
- Old-Time Player Piano Day 2018 is observed on Sunday, May 27, 2018
- Sunscreen Protection Day 2018 is observed on Sunday, May 27, 2018
- Amnesty International Day 2018 is observed on Monday, May 28, 2018
- International Hamburger Day 2018 is observed on Monday, May 28, 2018
- Slugs Return From Capistrano Day 2018 is observed on Monday, May 28, 2018
- National Brisket Day 2018 is observed on Monday, May 28, 2018
- Ascension of Bahá’u’lláh 2018 is observed on Tuesday, May 29, 2018
- End of the Middle Ages Day 2018 is observed on Tuesday, May 29, 2018
- International Day of United Nations Peacekeepers 2018 is observed on Tuesday, May 29, 2018
- Learn About Composting Day 2018 is observed on Tuesday, May 29, 2018
- Paper Clip Day 2018 is observed on Tuesday, May 29, 2018
- National Biscuit Day 2018 is observed on Tuesday, May 29, 2018
- World Digestive Health Day 2018 is observed on Tuesday, May 29, 2018
- Put a Pillow on Your Fridge Day 2018 is observed on Tuesday, May 29, 2018
- Loomis Day 2018 is observed on Wednesday, May 30, 2018
- My Bucket’s Got A Hole In It Day 2018 is observed on Wednesday, May 30, 2018
- Water a Flower Day 2018 is observed on Wednesday, May 30, 2018
- National Mint Julep Day 2018 is observed on Wednesday, May 30, 2018
- National Macaroon Day 2018 is observed on Thursday, May 31, 2018
- National Meditation Day 2018 is observed on Thursday, May 31, 2018
- Save Your Hearing Day 2018 is observed on Thursday, May 31, 2018
- Necrotizing Fasciitis Awareness Day 2018 is observed on Thursday, May 31, 2018
- Speak in Complete Sentences Day 2018 is observed on Thursday, May 31, 2018
- What You Think Upon Grows Day 2018 is observed on Thursday, May 31, 2018
- World No Tobacco Day 2018 is observed on Thursday, May 31, 2018
Special Days and International Days in May
Special Days and International Days in May
