Eight Oahu state parks will begin fall and winter park hours starting Tuesday. The parks affected will be open from 7 A-M to 6-45 P-M daily. They include places like Makapu’u lighthouse.. Kahana Beach Park .. And the Sand Island State Recreation Area. Other Oahu parks have year-round open hours. Hanauma Bay will also shift to winter hours — closing at 6 P-M every night– starting on Wednesday.