Sesame Street / Season 42 S42E12 Elmo and the Monarch Butterfly Sesame Street Netflix Share WhatsApp Telegram X (Twitter) Facebook Copy link Aired 5479days : 14hours : 57min : 04sec Friday, October 28, 2011 at 7:00 AM (Eastern Time) Synopsis This episode has no synopsis. Previous episode S42E11 Baby Bear's Baby Doll Next episode S42E13 Siblings Data from TVmaze (CC BY-SA). Updated October 28, 2026, 19:31.