Real age of Alan Rickman in The Hitchhiker's Guide to the Galaxy
In the movie The Hitchhiker's Guide to the Galaxy, Alan Rickman was:
58 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 The Hitchhiker's Guide to the Galaxy was released:
January 1, 2005
And the day in which Alan Rickman was born:February 21, 1946
Since movies usually don't take more than one year to be released since the beginning of the filming process, Alan Rickman may have been one year younger or one year older than the shown age while some scenes of the movie were being filmed.