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Hercules X-1/HZ Hercules (Her X-1/HZ Her) is an X-ray binary monitored bymultiple X-ray missions since last century. With the abundance of long-termobservations, we present a complete set of orbital light-curves of Her X-1/HZHer during the six states of the 35-day cycle in multiple energy bands. Theseillustrate in detail the changing light-curve caused by the rotatingtwisted-tilted accretion disc surrounding the neutron star. The orbitallight-curves during Main-High (MH) state are analyzed in 0.05 35-day phaseintervals. These show the regular occurrence of pre-eclipse dips which march toearlier orbital phase as 35-day phase increase. From the multi-bandlight-curves we derive time-average orbital phase dependence of column densityfor photoelectric absorption and energy-independent transmission as a functionof 35-day phase. The X-ray light-curves during Low States are similar in shapeto the optical Low State light-curve, but X-ray leads optical by $\simeq$0.04to 0.08 in orbital phase.

The Evolution of the Orbital Light-curve of Hercules X-1 with 35-day Phase