High Quality Content by WIKIPEDIA articles! The fifth season of the television series Buffy the Vampire Slayer premiered on September 26, 2000 on The WB Television Network and concluded its 22-episode season on May 22, 2001. It maintained its previous timeslot, airing Tuesdays at 8:00 pm ET. This was the final season to air on The WB before it moved to UPN; The WB billed the season five finale as the "The WB series finale".