HONOLULU (KHON2) — A new study has uncovered that Hapaialiʻi Heiau – an ancient Hawaiian religious site – served as a sophisticated seasonal calendar. The research, published in Waka Kuaka ...

The heiau, as it’s known in Hawaiian, was reconstructed in 2007 and dates to the early to mid 15th century, according to a Feb. 24 news release from the University of Hawaiʻi at Mānoa.