Mark your calendars! Stephen Colbert announced on Thursday the end date for The Colbert Report.

The final episode of The Colbert Report will air Thursday, December 18 on Comedy Central. As previously reported, he’ll begin his run as host of The Late Show on CBS sometime in 2015.

“Stephen Colbert, the guy you’ve seen here every night for nine years will be gone. All you’ll have left of me is this book,” Colbert said as he promoted his paperback tonight. “So pick up America Again in paperback for a loved one. Or for a hated one. Go to your local independent book store, because I have a longtime war against Amazon, and I will never relent. Or — buy it on Amazon, because, you know, just buy it.”

(By the way – you can buy it on Amazon right here.)

The first episode of The Colbert Report aired on October 17, 2005. By the time Colbert wraps in December, he’ll have nearly 1,500 episodes under his belt.

Letterman has yet to reveal the date of his final episode, but it’ll be sometime next year.

There’s no doubt we’ll be spending many of our weeknights over the next two months making sure to tune in to the final episodes of The Colbert Report.

CBS announced that he would succeed Letterman in April.