How old was Mark Harmon in Beyond the Poseidon Adventure?

Have you ever watched a movie and found yourself curious about a celebrity’s age at the time? That kind of trivia can make the viewing experience even richer. Here’s the age that matched the moment.

The age of Mark Harmon while starring in Beyond the Poseidon Adventure was:

27 years old

That was the real age of the celebrity according to our calculation.

To determine the age, we considered the first day of the year Beyond the Poseidon Adventure premiered:

January 1, 1979

And the known birth date of Mark Harmon:

September 02, 1951

Since movies are typically released within a year of filming, Mark Harmon could have been a year younger or older than the displayed age during certain scenes.