Oklahoma Statutes § 1-106 Determining dates

In determining the date of any event pertaining to elections which date is fixed by statute as occurring a certain number of days before or after an election, neither the day of the election nor the day of the event shall be counted. If the date set by law for an event pertaining to an election falls on an official holiday, the Secretary of the State Election Board shall have the authority to move the event to a preceding business day or to the next succeeding business day as appropriate for completion of the event.