| Constitution Day | |  |
| National Clean Up Your Room Day | | |
| National Lipid Day | | |
| National Shrimp Day | | |
| National Birth Mother’s Day | | |
| National Babysitter’s Day | | |
| National Dog Mom’s Day | | |
| National Train Day | | |
| National Archery Day | | |
| Cornelia De Lange Syndrome Awareness Day | | |
| Stamp Out Hunger Food Drive Day | | |
| Mother's Day | | |
| Confederate Memorial Day | | |
| World Migratory Bird Day | | |
| Liberation Day (only Sark) | | |
| Monarchy Day | | |
| World Lupus Day | | |
| National Miniature Golf Day | | |
| International Day Of Argania | | |
| World Belly Dance Day | | |
| Mother Ocean Day | | |
| National Windmill Day | | |
| One Day Without Shoes Day | | |
| World Buckfast Day | | |
| National Eat What You Want Day | | |
| National Foam Rolling Day | | |
| National Twilight Zone Day | | |
| Mother's Day | | |
| Day of the National Emblem and Flag of Belarus | | |
| Father's Day | | |
| World Ego Awareness Day | | |
| International Nurses Day | | |
| National Limerick Day | | |
| National Odometer Day | | |
| National Nutty Fudge Day | | |
| National Fibromyalgia Awareness Day | | |
| National Women’s Checkup Day | | |
| Mother's Day | | |
| Gospel Day | | |
| St. Andrew's Day | | |
| Wesak - Buddha Day | | |
| Buddha Purnima | | |
| Buddha Purnima/Vesak | | |
| Vesak Full Moon Poya Day | | |
| International Day Of Plant Health | | |
| National Crouton Day | | |
| National Frog Jumping Day | | |
| National Apple Pie Day | | |
| National Fruit Cocktail Day | | |
| World Cocktail Day | | |
| International Hummus Day | | |
| Leprechaun Day | | |
| Top Gun Day | | |
| Independence Day | | |
| National Unification Day | | |
| Kamuzu Day | | |
| National Decency Day | | |
| National Dance Like a Chicken Day | | |
| National Buttermilk Biscuit Day | | |
| National Receptionists Day | | |
| National Third Shift Workers Day | | |
| Donate A Day’s Wages To Charity Day | | |
| National Root Canal Appreciation Day | | |
| World Facilities Management Day | | |
| Independence Day Holiday | | |
| Teachers' Day | | |
| Family Day | | |
| International Day of Families | | |
| Peace Officers Memorial Day | | |
| Feast Day of St Isidore | | |
| National Chocolate Chip Day | | |
| National Nylon Stocking Day | | |
| Bring Flowers To Someone Day | | |
| National Notebook Day | | |
| National Straw Hat Day | | |
| National Police Week | | |
| Global Accessibility Awareness Day | | |
| International Vascular Birthmarks Awareness Day | | |
| SPLA Day | | |
| Honor Our LGBT Elders Day | | |
| National Do Something Good for Your Neighbor Day | | |
| National Love a Tree Day | | |
| National Piercing Day | | |
| National Sea Monkey Day | | |
| National Biographer’s Day | | |
| National Coquilles Saint Jacques Day | | |
| Bike to Work Day | | |
| National Endangered Species Day | | |
| National Pizza Party Day | | |
| NASCAR Day | | |
| Lag B'Omer | | |
| National Defense Transportation Day | | |
| Great Prayer Day | | |
| Horse Rescue Day | | |
| National Barbecue Day | | |
| National Waiters Day | | |
| Drawing Day | | |
| International Day Of Light | | |
| International Virtual Assistants Day | | |
| Shades Day | | |
| International Day Of Living Together In Peace | | |
| World Telecommunication and Information Society Day | | |
| Constitution Day | | |
| 17 May Constitution Day (1814) | | |
| Galicia Literature Day | | |
| Liberation Day | | |
| National Pack Rat Day | | |
| National Cherry Cobbler Day | | |
| National Graduation Tassel Day | | |
| National Walnut Day | | |
| National Learn to Swim Day | | |
| Armed Forces Day | | |
| Europe Day | | |
| World Whisky Day | | |
| National Work From Home Day | | |
| World Fiddle Day | | |
| National Pinot Grigio Day | | |
| World Neurofibromatosis Awareness Day | | |
| Plant A Lemon Tree Day | | |
