Okla. Stat. tit. 12 § 1756
The date for the appearance of the defendant as provided in the order endorsed on the affidavit shall not be more than sixty (60) days nor less than ten (10) days from the date of the order. The order shall be served upon the defendant at least seven (7) days prior to the date specified in the order for the appearance of the defendant. If it is not served upon the defendant, the plaintiff shall apply to the clerk for a new order setting a new day for the appearance of the defendant, which shall not be more than sixty (60) days nor less than ten (10) days from the date of the issuance of the new order. When the clerk has fixed the date for appearance of the defendant, the clerk shall inform the plaintiff, either in person or by certified mail, of the date and order the plaintiff to appear on that date.
Okla. Stat. tit. 12, § 1756