When does Snoopy's Reunion return?

Snoopy's Reunion is the 34th prime-time animated TV special based upon the comic strip Peanuts. It originally aired on the CBS network on May 1, 1991 as part of the animated anthology series Toon Nite. Five of the siblings appeared at some point in the Peanuts comic strip; Molly and Rover only appear in this special.