Okla. Stat. tit. 12 § 27
In any matter taken under advisement, a decision shall be rendered within sixty (60) days of the date on which the matter was taken under advisement or, if briefs are to be submitted, within sixty (60) days of the date of the filing of the final brief.
When a trial court takes a matter under advisement, the judge shall specify the date by which a decision shall be rendered. If briefs are to be submitted, the dates for filing such shall also be specified.
The Chief Justice may extend the deadline for a decision upon sworn application for an extension of time of the trial judge setting forth with specificity the reasons therefor.
Upon entering and filing the decision with the court clerk, in a matter taken under advisement, it shall be the duty of the judge to see that file-stamped copies of the minute order or judgment setting out such decision are mailed by the court clerk to counsel in the case and to any party appearing pro se.
The court may direct a party to mail file-stamped copies of the judgment or order to the other parties. 12 O.S. §§ 696.2, 696.3.
The copies of the order or judgment mailed under this rule shall bear the notation of the date of mailing, and the clerk or party mailing shall file a certificate of mailing with the district court clerk. 12 O.S. § 696.2.
Okla. Stat. tit. 12, § 27