Hawaii Revised Statutes Division 1. Government § 290-2

(a) Upon taking custody of any abandoned vehicle, a written notice shall immediately be sent by registered or certified mail to the legal and registered owner of the vehicle at the address on record at the vehicle licensing division. The notice shall contain a brief description of the vehicle, the location of custody, and intended disposition of the vehicle if not repossessed within ten days after the mailing of the notice, or in the case where the address of the registered owner on record at the vehicle licensing division is an out-of-state address, within twenty business days after the mailing of the notice. A notice need not be sent to a legal or registered owner or any person with an unrecorded interest in the vehicle whose name or address cannot be determined. Absent evidence to the contrary, a notice shall be deemed received by the legal or registered owner five days after the mailing.

(b) The county agency designated by the mayor to carry out the functions and requirements of section 290-1 and this section shall adopt rules pursuant to chapter 91 regarding notification of vehicle owners.

(c) For purposes of this section, “business days” shall exclude Saturdays, Sundays, and state holidays.