Today is also...
National Lover's Day
Take Our Daughters and Sons to Work Day
World Book Day
National Picnic Day
Event
International Creator Day 
Movie Theatre Day
National Cherry Cheesecake Day
National English Muffin Day
National Take a Chance Day
Shakespeare Day
World Laboratory Day
World Table Tennis Day
International English Language 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