Bat-Signal will light up skies on Batman Day to celebrate Caped Crusader's 80th anniversary

Holy anniversary, Batman. The Caped Crusader is 80 years old and it's time to celebrate.

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Saturday is Batman Day, and the iconic Bat-Signal, which lit the skies of Gotham City to summon Batman in times of trouble, will be lit in cities around the world, The New York Times reported.

"I don't know who he is beneath that mask of his, but I know when we need him, and we need him now!" Gotham City Police Commissioner Gordon would say in the campy 1960s "Batman" television series.

Batman's actual "birthday" was March 30, 1939, when the superhero made his debut in DC Comics, But the Bat-Signal ritual has taken place on Sept. 21 to honor the Dark Knight.

In the real Gotham, New York City will project the Bat-Signal on the side of the Domino Sugar Refinery Building in Brooklyn from 8 p.m. until midnight, WNBC reported.