Haw. Rev. Stat. § 8-19: Makahiki Commemoration Day.

One of the kapu Hua days of Mōhalu, Hua, or Akua of the lunar month of `Ikuā of each year shall be known and designated as Makahiki Commemoration Day to recognize the Makahiki, a season and New Year festival of Hawaiian tradition celebrating harvest, bounty, and the god Lono. The calendar date on which the State should commemorate the Makahiki season shall be projected yearly using various technologies that track celestial phenomena to determine and publicize the equivalent day of the Gregorian calendar. This day is not and shall not be construed as a state holiday.