Charlie Day is 48 years and 9 month(s) old. He was born in 9 Feb, 1976. Charlie Day under the full name Charles Peckham Charlie Day was born in 1976. He is a screen writer and a television producer but he is best known because of playing Charlie Kelly at the It’s Always Sunny in Philadelphia. He played in other movies like The Lego Movie, Pacific Rim and Horrible Bosses.