When did Big Brother Season 27 Episode 21 air?
Big Brother Season 27 Episode 21 aired on August 21, 2025.
Big Brother
Expect the unexpected.
American version of the reality game show which follows a group of HouseGuests living together 24 hours a day in the "Big Brother" house, isolated from the outside world but under constant surveillance with no privacy for three months.
Created by: John de Mol
Season 27 · Episode 21
Episode 21
Aug 21, 2025·43m
Will a showmance be torn apart? It all comes down to who wins safety in the BB Blockbuster…. Plus another Houseguest will be evicted!
Episode FAQ
Direct answers for episode-level questions and details.
How long is Big Brother Season 27 Episode 21?
This episode runs for approximately 43 minutes.
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