In computing any period of time prescribed by this chapter, by notice, or by any order, or rule of the commission, or any applicable statute, the time begins with the day following the act, event, or default and includes the last day of the period unless it is a Saturday, Sunday, or legal holiday, or a day or a part of a day on or for which the governor has granted administrative leave in the State, in which event the period runs until the end of the next day which is not a Saturday, Sunday, or legal holiday. Unless otherwise specified in these rules, when the prescribed period of time is less than seven days, Saturdays, Sundays, or legal holidays within the designated period shall not be included in the computation.
Haw. Code R. § 15-15-16