Haw. Rev. Stat. § 92H-4

A government agency, person, or organization that receives a valid written request and requires additional time to comply with the written request may extend the deadline to comply with the written request. The extension shall be made by providing a written acknowledgement to the requestor within three business days. The extension of time to comply with the written request may be extended for up to an additional ten business days from the date the written acknowledgement is transmitted.