Real age of Diane Keaton in Manhattan
In the movie Manhattan, Diane Keaton was:
32 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 Manhattan was released:
January 1, 1979
And the day in which Diane Keaton was born:January 05, 1946
Since movies usually don't take more than one year to be released since the beginning of the filming process, Diane Keaton may have been one year younger or one year older than the shown age while some scenes of the movie were being filmed.