How old was Josh Hartnett in Zéro un?

It's common to wonder how old a celebrity was when they starred in a particular film. That knowledge can reshape how we view their performance. Here’s the answer to that particular curiosity.

Josh Hartnett was this age when he appeared in Zéro un:

24 years old

Our analysis shows that this was the celebrity’s true age during filming.

The shown age corresponds to the celebrity’s age at the very start of the release year of Zéro un:

January 1, 2003

And the day Josh Hartnett was born, which is:

July 21, 1978

Since movies are typically released within a year of filming, Josh Hartnett could have been a year younger or older than the displayed age during certain scenes.