Ohio Rev. Code § 1701.02: Computation of time for notice.

In computing the period of time for the giving of a notice required or permitted under sections 1701.01 to 1701.98, inclusive, of the Revised Code, or under the articles, the regulations, or the bylaws of a corporation, or a resolution of its shareholders or directors, the day on which the notice is given shall be excluded, and the day when the act for which notice is given is to be done shall be included, unless the instrument calling for the notice otherwise provides. If notice is permitted to be given by mail, the notice shall be deemed to have been given when deposited in the mail.