Here’s something to make you feel old: Sesame Street is 50 years old. Only a small percentage of TV series that debut each year are considered hits. Most of those don’t make it past 10 seasons. And then there are those that defy the odds like Sesame Street which has been delighting kids while teaching them life lessons for 50 years on PBS and more recently, HBO. ABC will present Sesame Street: 50 Years of Sunny Days, a two-hour documentary special about this show’s impact on Monday, April 26, 2021.

If you remember, during the early days of Sesame Street, each episode was “brought to you by the letters H and I and the number 5,” a rainbow of human and Muppet cast members were shown in every episode and simple concepts like “near and far” were presented in fun and unique ways. Over the years, social issues have been raised and explained on the show including homelessness, multicultural representation, autism, refugee crises and even addiction.

Produced by TIME Studios, this special will highlight the impact of this iconic show and the nonprofit behind it, Sesame Workshop. The documentary features special guests including W. Kamau Bell, Gloria Estefan, Dr. Anthony Fauci, Whoopi Goldberg, Christopher Jackson, John Legend, Lucy Liu, Olivia Munn, Questlove, Chrissy Teigen and Usher as well as other celebritiy appearances which will be announced at a later date. It will also chronicle the creation of a black family of Muppet characters which is part of the show’s new racial justice initiative.

Sesame Street: 50 Years of Sunny Days will air on Monday, April 26, 2011 at 8 p.m. on ABC and the special can be viewed the next day on demand and on Hulu.