| National Orchid Day | |  |
| National Eggs Benedict Day | | |
| National Wear Your Pajamas to Work Day | | |
| National Healthcare Decisions Day | | |
| National Bean Counter Day | | |
| National High Five Day | | |
| Get to Know Your Customers Day | | |
| Emancipation Day | | |
| Save The Elephant Day | | |
| College Student Grief Awareness Day | | |
| National Librarian Day | | |
| Independence Day | | |
| Women's Rights Day | | |
| Herbalist Day | | |
| National Bat Appreciation Day | | |
| National Ellis Island Family History Day | | |
| National Haiku Poetry Day | | |
| National Cheeseball Day | | |
| Flag Day | | |
| Fast and Prayer Day | | |
| Blah Blah Blah Day | | |
| National Kickball Day | | |
| National Ford Mustang Day | | |
| World Hemophilia Day | | |
| Nothing Like A Dame Day | | |
| Birthday of Guru Angad Dev | | |
| International Day for Monuments and Sites | | |
| Independence Day | | |
| National Lineman Appreciation Day | | |
| National Columnists’ Day | | |
| National Animal Crackers Day | | |
| National Auctioneers Day | | |
| National Piñata Day | | |
| Pet Owners Independence Day | | |
| Declaration of Independence | | |
| Bicycle Day | | |
| National Hanging Out Day | | |
| National Oklahoma City Bombing Commemoration Day | | |
| National Garlic Day | | |
| National Amaretto Day | | |
| Landing of the 33 orientals | | |
| Birthday of King Mswati III | | |
| Administrative Professionals Week | | |
| National Rice Ball Day | | |
| Chinese Language Day | | |
| Lima Bean Respect Day | | |
| National Cheddar Fries Day | | |
| National Look Alike Day | | |
| National Pineapple Upside Down Cake Day | | |
| Sechseläuten | | |
| St. George's Day | | |
| Patriot's Day | | |
| Queen's Birthday | | |
| 420 Day | | |
| Tiradentes Day | | |
| San Jacinto Day | | |
| National Kindergarten Day | | |
| National Chocolate Covered Cashews Day | | |
| National Yellow Bat Day | | |
| Queen's Birthday | | |
| Yom HaZikaron (Memorial Day) | | |
| National Tea Day | | |
| National Bulldogs Are Beautiful Day | | |
| World Creativity And Innovation Day | | |
| National Holocaust, World War II Genocide and other Fascist Crimes Victims Remembrance Day | | |
| Oklahoma Day | | |
| National Girl Scout Leader’s Day | | |
| National Jelly Bean Day | | |
| Administrative Professionals Day | | |
| Yom Ha'atzmaut | | |
| Earth Day | | |
| Stephen Lawrence Day | | |
| National Beagle Day | | |
| International Mother Earth Day | | |
