We Now Know When David Letterman Leaves “The Late Show”

(NEW YORK) — We've known since April that David Letterman's leaving The Late Show next year. Now, we know when.

CBS announced on Wednesday that May 20, 2015 will be Letterman's last day behind the Late Show desk, after which Stephen Colbert will take over. Colbert's debut date has not yet been announced.

“David Letterman has given to all of us a remarkable legacy of achievement and creative brilliance that will never be forgotten,” said CBS President Les Moonves in a statement. “It’s going to be tough to say goodbye, but I know we will all cherish the shows leading up to Dave’s final broadcast in May.”

Letterman is currently the longest-running late night host on American TV, having begun on Feb. 1, 1982 as host of Late Night with David Letterman on NBC, which re-defined the genre for every generation thereafter. He jumped to CBS on Aug. 30, 1993 after NBC passed him over in favor of Jay Leno to succeed Johnny Carson as host of The Tonight Show.

The night he steps down, Letterman will have hosted 6,028 total episodes of both Late Night and The Late Show.

Also on CBS, Craig Ferguson's last broadcast as host of The Late Late Show after 10 years is Dec. 19. British actor James Corden will make his debut as the show's host on March 9, 2015.

Copyright 2014 ABC News Radio. All Rights Reserved. (PHOTO: Jeffrey R. Staab/CBS via ABC News)

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