Kit Harington in Game of Thrones

Macall B. Polay/HBO

You know nothing about hosting "Saturday Night Live," Jon Snow — but you'll soon learn.

"SNL" has booked "Game of Thrones" star Kit Harington to host the April 6 episode. The musical guest will be Broadway’s "Waitress" creator Sara Bareilles. Both are making their "SNL" debuts.

Harington's gig at Studio 8H will come just a week before the eighth and final season of "Game of Thrones" premieres on HBO. The actor also voices a character in "How to Train Your Dragon: The Hidden World."

The following week, on April 13, Oscar winner Emma Stone — coming off her nominated performance in "The Favourite" — is set to host for the fourth time. Stone is currently filming the sequel "Zombieland: Double Tap," which opens in theaters in October.

The musical guest will be the popular K-pop group BTS, who will debut their latest album "Map of the Soul: Persona" a few days prior.

The previously announced host for March 30 is "Killing Eve" star and Golden Globe winner Sandra Oh, with musical guest Tame Impala.