(A) Upon motion and for good cause shown, the commission may increase or decrease the time prescribed by any rule of this chapter of the Administrative Code, or by its orders, for doing any act, or may permit an act to be done after the expiration of such time . However, the commission shall not increase or decrease the time for:
(2) Giving public notice of hearings on the adoption, amendment, or rescission of rules; or
(3) Taking any orther action where a time period is prescribed by statute, unless agreed to by the parties and approved by the commission.
(B) In computing any period of time prescribed or allowed by this chapter of the Administrative Code, the day of the act or event from which the designated period of time begins to run shall not be included. The last day of the period so computed shall be included, unless it is a Saturday, Sunday or a legal holiday, in which event the period runs until the end of the next day which is not a Saturday, Sunday or a legal holiday. When the period of time prescribed or allowed is less than seven days, intermediate Saturdays, Sundays and legal holidays shall be excluded in the computation.