The Emperor: Owner of the Mask () is a South Korean television series starring Yoo Seung-ho, Kim So-hyun, Kim Myung-soo, Yoon So-hee, Heo Joon-ho and Park Chul-min. It aired on MBC every Wednesday and Thursday at 22:00 (KST) from May 10, 2017 for 40 episodes.
The Emperor: Owner of the Mask ran two years ago on a South Korean network at 10 P.M.
This statement is definitely correct because I basically copied information from the text but neglected to use military time. I'm sure this is why the system got it wrong.