When did The Simpsons Season 20 Episode 21 air?
The Simpsons Season 20 Episode 21 aired on May 17, 2009 at 8 PM ET.


Just a product of society that's lost its good manners.
Set in Springfield, the average American town, the show focuses on the antics and everyday adventures of the Simpson family; Homer, Marge, Bart, Lisa and Maggie, as well as a virtual cast of thousands. Since the beginning, the series has been a pop culture icon, attracting hundreds of celebrities to guest star. The show has also made name for itself in its fearless satirical take on politics, media and American life in general.

When nearby Ogdenville’s economy crumbles due to tainted barley discovered in Krusty’s veggie burgers, the unemployed workers of Ogdenville flock to Springfield. After Mayor Quimby closes Springfield’s borders and enlists private citizens to help patrol them, Homer organizes a border patrol group.
Direct answers for episode-level questions and details.
The Simpsons Season 20 Episode 21 aired on May 17, 2009 at 8 PM ET.
This episode runs for approximately 22 minutes.
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