Real age of Joseph Gordon-Levitt in (500) Days of Summer
In the movie (500) Days of Summer, Joseph Gordon-Levitt was:
27 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 (500) Days of Summer was released:
January 1, 2009
And the day in which Joseph Gordon-Levitt was born:February 17, 1981
Since movies usually don't take more than one year to be released since the beginning of the filming process, Joseph Gordon-Levitt may have been one year younger or one year older than the shown age while some scenes of the movie were being filmed.