SODPROPS stands for Simultaneous Opposite Direction Parallel Runway OPerationS. SODPROPS regulations allow airports to move traffic in opposite directions while maintaining safety standards. Opposite direction operations are often useful at airports with noise sensitive neighbors on one side, where arriving and departing traffic over water or away from residential areas might be preferred.
A Batik Air 737-8 MAX landing on Runway 34L, while a Jetstar A320 departs in the opposite direction on Runway 16L during SODPROPS.

SODPROPS is most commonly associated with Sydney Kingsford Smith Airport. At Sydney, traffic can arrive on Runway 34L and depart Runway 16L, keeping flights over the bay.

SODPROPS are only possible during periods of light winds and good visibility, which often makes for excellent photography.