Real age of Charlie Day in It's Always Sunny in Philadelphia Season 3: Sunny Side Up
In the movie It's Always Sunny in Philadelphia Season 3: Sunny Side Up, Charlie Day was:
31 years old
That was the real age of the celebrity according to our calculation.
The calculation of the shown age took into account the first day of the year in which the movie It's Always Sunny in Philadelphia Season 3: Sunny Side Up was released:
January 1, 2008
And the day in which Charlie Day was born:February 09, 1976
Since movies usually don't take more than one year to be released since the beginning of the filming process, Charlie Day may have been one year younger or one year older than the shown age while some scenes of the movie were being filmed.