Stephen Colbert will officially kick off his reign as “Late Show” host on Tuesday, Sept. 8, CBS announced Monday.

Colbert, who ended his run on “The Colbert Report” in a wacky finale last month, was named David Letterman’s replacement this past spring. The veteran late-night host had surprised everyone when he earlier announced his retirement. Letterman’s last night at the desk will be Wednesday, May 20.

That’s a long time for Colbert to be off the air, which he acknowledged with a very Colbert-esque quote in CBS’s release. “I have nine months to make a show, just like a baby. So first, I should find out how you make a baby,” he said.

The show will air from the Ed Sullivan Theater in New York City, though CBS said producers and creative elements of the show will be announced later.

And just to keep your head spinning, the late-night shake-ups will start even earlier: Colbert’s replacement, Larry Wilmore, kicks off his “Nightly Show” on Comedy Central next Monday.