Commander Mark Kelly and his six crewmates are scheduled to lift off for the International Space Station at 5:02 p.m. EDT that day.
Discovery's 14-day flight will carry the largest payload so far to the station and the mission will include three spacewalks. It's the second of three flights to carry components to complete the Japan Aerospace Exploration Agency's Kibo laboratory. The crew will install Kibo's large Japanese Pressurized Module and Kibo's robotic arm system.
Kelly will be joined on STS-124 by U.S. astronauts Ken Ham, Karen Nyberg, Ron Garan, Mike Fossum, Chamitoff and Japanese astronaut Akihiko Hoshide.