Real age of Robert Duvall in MASH
In the movie MASH, Robert Duvall was:
38 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 MASH was released:
January 1, 1970
And the day in which Robert Duvall was born:January 05, 1931
Since movies usually don't take more than one year to be released since the beginning of the filming process, Robert Duvall may have been one year younger or one year older than the shown age while some scenes of the movie were being filmed.