Question: when does crisis on infinite earths start on the cw?
Answer: 6, at 8 p.m. ET and 9 p.m. ET; Black Lightning bows in Monday, Oct. 7 at 9 p.m.; The Flash returns Tuesday, Oct. 8, at 8 p.m. ET; and Arrow's final season premieres Tuesday, Oct. 15, at 9 p.m. ET; all on the CW.