In computing any period of time specified under this chapter, in a notice, or in any order of the board, the time begins with the day following the act, event, or default and includes the last day of the period so computed, unless it is a Saturday, Sunday, or holiday; in which event the period runs until the end of the next day which is not a Saturday, Sunday or holiday. As used in this chapter, "holiday" includes any day designated as such by section 8-1, HRS.
Haw. Code R. § 12-47-19