Real age of Jackie Earle Haley in The Day of the Locust
In the movie The Day of the Locust, Jackie Earle Haley was:
13 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 The Day of the Locust was released:
January 1, 1975
And the day in which Jackie Earle Haley was born:July 14, 1961
Since movies usually don't take more than one year to be released since the beginning of the filming process, Jackie Earle Haley may have been one year younger or one year older than the shown age while some scenes of the movie were being filmed.