Ohio Rev. Code § 1545.03
Upon the filing of the application provided for in section 1545.02 of the Revised Code, the probate judge shall fix a time for the hearing of such application which shall not be less than twenty nor more than forty days subsequent to the date of the filing of the application. Such judge shall publish notice of the filing of such application and the date of hearing thereof in two newspapers of general circulation within such district, or if there is but one newspaper of general circulation within such district, in such newspaper. If there is no newspaper of general circulation within such proposed district, then such judge shall post such notice in five of the most public places within such proposed district. Such notice shall be published or posted for a period of not less than fifteen days prior to the date fixed for the hearing. The hearing may be adjourned from time to time upon good cause shown.
R.C. §1545.03