Today is also...
Earth Day
Event
April Showers Day
In God We Trust Day 
National Jelly Bean Day
Oklahoma Day
International Mother Earth DayToday is also part of...
Event
Earth Month
International Guitar Month
Keep America Beautiful Month
National Card and Letter Writing Month
National Decorating Month
National Food Month
National Grilled Cheese Month
National Humor Month
National Literature Month
National Poetry Month
Couple Appreciation Month
National Coin Week 
National Princess Week