Real age of Alan Arkin in Simon
In the movie Simon, Alan Arkin was:
45 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 Simon was released:
January 1, 1980
And the day in which Alan Arkin was born:March 26, 1934
Since movies usually don't take more than one year to be released since the beginning of the filming process, Alan Arkin may have been one year younger or one year older than the shown age while some scenes of the movie were being filmed.