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

The Bat-Signal will shine Saturday night in Los Angeles and other cities worldwide to celebrate Batman Day.

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.

Twelve other cities will do the same, shining the signal from 8 p.m. to midnight local time, the Times reported.

The celebration began in Melbourne, Australia, at Fed Square, according to DC's Bat Tracker. Other cities include Tokyo, Paris, Sao Paulo, Mexico City, Montreal, Barcelona, London, Johannesburg, Rome; and Berlin

The final lighting will be at City Hall in Los Angeles, the location of 70-foot Bat-Signal in 2017 to honor TV's Batman -- Adam West -- who died in June 2017.