CBS and After Dark schedules
 

Big Brother 18 will run 99 days in total, from move-in and premiere taping on June 15 through finale September 21.

The CBS premiere is June 22 at 8pm (two hours), followed by the second show on June 23 at 9pm. Feeds start after that second show, June 23 at 10pm Pacific/1am Eastern.

Regular season schedule is Sundays 8pm, Wednesdays 8pm, and live eviction Thursdays 9pm on CBS (Global in Canada).

After Dark regular schedule is Mondays, Wednesdays, Fridays, Saturdays, Sundays midnight to 3am, Tuesdays 11pm to 3am, and Thursdays 1am to 3am on Pop (Slice in Canada).