Real age of M. Night Shyamalan in Signs
In the movie Signs, M. Night Shyamalan 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 Signs was released:
January 1, 2002
And the day in which M. Night Shyamalan was born:August 06, 1970
Since movies usually don't take more than one year to be released since the beginning of the filming process, M. Night Shyamalan may have been one year younger or one year older than the shown age while some scenes of the movie were being filmed.