New Hampshire Statutes § 652:18 Days Included and Excluded

I. Except where specifically stated to the contrary, when a period or limit of time is to be reckoned from a day or date, that day or date shall be excluded from and the day on which an act should occur shall be included in the computation of the period or limit of time.

II. Whenever the election laws refer to a period or limit of time, Saturdays, Sundays, and holidays shall be included, except as provided in paragraph I. However, when the last day for performing any act under the election laws is a Saturday, Sunday or official state holiday, the act required shall be deemed to be duly performed if it is performed on the following business day.