Holidays 4.16
- Day of Mushroom Encouragement
- Eggs Benedict Day
- Emancipation Day (DC)
- Foursquare Day
- Liberating the Rainbow Lost in White Light Festival
- National Librarian Day
- National Stress Awareness Day
- National Wear Your Pajamas To Work Day
- Royalty Day
- Sechseläuten (Zurich, Switzerland) [3rd Monday]
