When Kelly Sun fully regains consciousness in the hospital, she panics because she has to be in Korea on Friday, only to be told by Stabler it's already Friday, and that she's missed her flight. It's established that Kelly was at the airport "last night" - Thursday - when she was drugged. That's not nearly enough time to get to South Korea by Friday; a non-stop flight from New York to Seoul takes at least 14 hours, and Seoul is 14 hours ahead of Eastern Standard Time. (Had Kelly left New York on Thursday evening, she likely would have arrived in Korea very late Friday or early Saturday,)