BIG BROTHER, hosted by Julie Chen and celebrating its 20th season, will once again have three weekly episodes. The hit reality series debuts with a special two-hour premiere on Wednesday, June 27 (8:00-10:00 PM, ET/PT), followed by the Thursday episode on June 28 (9:00-10:00 PM, ET/PT) and the Sunday broadcast on July 1 (8:00-9:00 PM, ET/PT). On Wednesday, July 4, the show moves to 9:00 PM for the remainder of its Wednesday run. Last summer, all three editions of BIG BROTHER ranked in the summer’s top 10 in viewers and all key demos. Bet on Big Brothers winner here at William Hill.