Tonight's episode of Big Brother (September 18, 2025) is a special double eviction show that will last two hours, airing from 8 to 10 p.m. Eastern Time. This week is an exception to the usual schedule, where episodes typically run 90 minutes on Wednesdays and one hour on Thursdays and Sundays. However, for this Thursday night, the episode duration is extended to two hours for the double eviction event.

In summary:

• Big Brother tonight runs for 2 hours (8-10 p.m. ET)
• It is a double eviction episode, making it longer than usual.