Big Brother 27 Schedule – When Is Big Brother On?

Big Brother 27 new season starts July 2025

Here we have the Big Brother 27 schedule from CBS as announced in the preseason. These tend to change wildly after just a few weeks into the season when either something isn’t working or CBS is moving other shows around and Big Brother becomes the pawn in their schedule games. All the same, this is what’s on the TV docket for BB27 so far, and of course we will keep it updated as we go through the season.

The summer kicks off with three 90-minute episodes before settling into its for-now routine of 60-minute shows on Sundays and Thursdays then 90-minutes every Wednesday night. I guess Survivor carved the path for those longer shows and now CBS is testing it out on Big Brother. Considering how much we see gets regularly cut it’s tempting to hope we’ll get more accurate versions of events on the broadcasts, but that may be hoping for too much.

Note the Unlocked episodes which will feature past Houseguests and weekly bonus content that didn’t make the regular shows. This could be really interesting if it’s done right and will also depend on who they pull in to host. We shall see but for now it’s something new and that’s exciting!

Big Brother 27 Schedule:

  • Thursday 7/10 @ 8 – 9:30 PM ET/PT – 90-minute Season premiere
  • Sunday 7/13 @ 8 – 9:30 PM ET/PT – 90-minute episode
  • Wednesday 7/16 @ 8 – 9:30 PM ET/PT – 90-min episode
  • Thursday 7/17 @ 8 – 9 PM ET/PT – regular 60-minute episode
  • Sunday 7/20 @ 8 – 9 PM ET/PT – regular 60-minute episode
  • Wednesday 7/23 @ 8 – 9:30 PM ET/PT – 90-min episode
  • Friday 7/25 @ 8 – 9 PM ET/PT – Big Brother Unlocked episode
  • Friday 8/8 @ 8 – 9 PM ET/PT – Big Brother Unlocked episode
  • Friday 8/22 @ 8 – 9 PM ET/PT – Big Brother Unlocked episode
  • Friday 9/5 @ 8 – 9 PM ET/PT – Big Brother Unlocked episode
  • Friday 9/19 @ 8 – 9 PM ET/PT – Big Brother Unlocked episode
  • Friday 9/26 @ 8 – 9 PM ET/PT – Big Brother Unlocked episode

The Big Brother: Unlocked shows will be every other Friday night starting on July 25th and running through September 26th. Perhaps that hints at the season finale in early October? Not sure, but it’s certainly reasonable. Last season started a week later with a July 17th premiere and ended on October 13th, so it’s totally possible for this season to wrap up by Thursday, October 8th.

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