Real age of Cary Grant in North by Northwest
In the movie North by Northwest, Cary Grant was:
54 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 North by Northwest was released:
January 1, 1959
And the day in which Cary Grant was born:January 18, 1904
Since movies usually don't take more than one year to be released since the beginning of the filming process, Cary Grant may have been one year younger or one year older than the shown age while some scenes of the movie were being filmed.