| Europe Day | |  |
| National Lost Sock Memorial Day | | |
| National Moscato Day | | |
| National Butterscotch Brownie Day | | |
| National Sleepover 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 | | |
| Victory Day | | |
| Matsu's Birthday | | |
| Remembrance Day | | |
| Liberation Day (except Alderney and Sark) | | |
| Liberation Day | | |
| World Migratory Bird Day | | |
| National Miniature Golf Day | | |
| World Belly Dance Day | | |
| National Windmill Day | | |
| World Buckfast Day | | |
| Constitution Day | | |
| National Clean Up Your Room Day | | |
| National Lipid Day | | |
| National Shrimp Day | | |
| Mother's Day | | |
| Confederate Memorial Day | | |
| Day of the National Emblem and Flag of Belarus | | |
| Liberation Day (only Sark) | | |
| Monarchy Day | | |
| Father's Day | | |
| World Lupus Day | | |
| International Day Of Argania | | |
| Mother Ocean Day | | |
| One Day Without Shoes Day | | |
| National Eat What You Want Day | | |
| National Foam Rolling Day | | |
| National Twilight Zone Day | | |
| National Women’s Checkup Day | | |
| Confederate Memorial Day observed | | |
| Mother's Day | | |
| Gospel Day | | |
| Victory Day observed | | |
| Europe Day observed | | |
| World Ego Awareness Day | | |
| International Nurses Day | | |
| National Limerick Day | | |
| National Odometer Day | | |
| National Nutty Fudge Day | | |
| National Fibromyalgia Awareness Day | | |
| Primary Election Day | | |
| St. Andrew's Day | | |
| International Day Of Plant Health | | |
| National Crouton Day | | |
| National Frog Jumping Day | | |
| National Apple Pie Day | | |
| National Fruit Cocktail Day | | |
| National Receptionists Day | | |
| National Third Shift Workers Day | | |
| World Cocktail Day | | |
| International Hummus Day | | |
| Leprechaun Day | | |
| Donate A Day’s Wages To Charity Day | | |
| National Root Canal Appreciation Day | | |
| Top Gun Day | | |
| World Facilities Management Day | | |
| Independence Day | | |
| National Unification Day | | |
| Kamuzu Day | | |
| National Decency Day | | |
| National Dance Like a Chicken Day | | |
| National Buttermilk Biscuit Day | | |
| Ascension Day | | |
| Father's 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 | | |
| Bike to Work Day | | |
| National Endangered Species Day | | |
| National Pizza Party Day | | |
| NASCAR Day | | |
| National Defense Transportation Day | | |
| Yom Yerushalayim (Jerusalem Day) | | |
| Bring Flowers To Someone Day | | |
| National Straw Hat Day | | |
| International Virtual Assistants Day | | |
| Shades Day | | |
| National Police Week | | |
| International Vascular Birthmarks Awareness Day | | |
