Rule of construction regarding calculation of deadlines

(a) In general With respect to the calculation of any period of time for the purposes of a deadline in this Act, the last day of the period shall be included in such calculation, unless such day is a Saturday, a Sunday, or a legal public holiday, in which case the period of such deadline shall be extended until the end of the next day which is not a Saturday, a Sunday, or a legal public holiday. (b) Legal public holiday defined For the purposes of this section, the term legal public holiday means a day described in section 6103(a) of title 5, United States Code.