HBO premiere dates for Westworld, Divorce and Insecure During their TCA panel today, HBO announced the premeire dates for their highly-anticipated drama Westworld and their upcoming comedies Divorce and Insecure. Westworld will premiere on Sunday, October 2 at 9 PM ET with both Divorce and Insecure tapping in a week later on Sunday, October 9 at 10 PM PT and 10:30 PM PT respectively. The one-hour drama series Westworld is a dark odyssey about the dawn of artificial consciousness and the evolution of sin.