At night, trains are half-hourly, or hourly. All services stop at all stations, except for the once-per-day K pattern, which runs early in the morning each direction, terminating and commencing at Rockingham station.
Night-time train schedules run every half hour or hour. Except for the daily K-pattern service that departs from Rockingham station early in the morning and returns late, all other services operate continuously between stations.