The minute-by-minute schedule for show day, distributed to the entire production crew. Lists load-in, soundcheck, doors, opener set time, changeover, headliner set time, encore, load-out, and any other scheduled events (meet-and-greets, photo ops). The ROS is the source of truth: everyone references it during the day. Day sheets typically include the ROS prominently up top. Build the ROS during advancing; print and distribute the morning of show.