Upon further checking I see April 4th 2016 is all of the below... It's quite the day!
404 day
Hug a Newsperson Day
International Carrot Day
International Day for Mine Awareness and Assistance in Min Action
National Cordon Bleu Day
National Fun Day
National Tell a Lie Day
Sweet Potato Day
Victims of Violence Wholly Day
Vitamin C Day
Walk Around Things Day
and
World Rat Day.