Okla. Stat. tit. 58, § 58-553: Date of hearing - Notice of final settlement

Every account for the final settlement and petition for

distribution of an estate shall stand for hearing at a date to be

fixed by the court, not less than twenty (20) days after the filing

thereof; and notice of such hearing shall be given by mailing

written or printed copies of the notice of such hearing to the

heirs, legatees and devisees whose addresses are known, and

deposited in the post office with the postage thereon prepaid, at

least ten (10) days before the hearing, and said notice of such

hearing shall also be given by publication once each week for two

(2) consecutive weeks in a newspaper published in the county,

showing the name of the decedent and of the executor or

administrator, the date of the hearing, and that such account is for

final settlement and distribution: Provided, any number of accounts

may be included in one notice and the cost of publication thereof

divided among the estates whose settlements are advertised therein.