Okla. Stat. tit. 12A, § 4A-106 – Time Payment Order is Received

(a) The time of receipt of a payment order or communication canceling or amending a payment order is determined by the rules applicable to receipt of a notice stated in Section 1-202 of this title. A receiving bank may fix a cut-off time or times on a funds-transfer business day for the receipt and processing of payment orders and communications canceling or amending payment orders. Different cut-off times may apply to payment orders, cancellations, or amendments, or to different categories of payment orders, cancellations, or amendments. A cut-off time may apply to senders generally or different cut-off times may apply to different senders or categories of payment orders. If a payment order or communication canceling or amending a payment order is received after the close of a funds-transfer business day or after the appropriate cut-off time on a funds-transfer business day, the receiving bank may treat the payment order or communication as received at the opening of the next funds-transfer business day.
(b) If this Article refers to an execution date or payment date or states a day on which a receiving bank is required to take action, and the date or day does not fall on a funds-transfer business day, the next day that is a funds-transfer business day is treated as the date or day stated, unless the contrary is stated in this Article.
Oklahoma Code Comment A payment order is effective on the funds transfer day during which it is received. The receiving bank can adjust this rule by setting cut-off times for payment orders. These cut-off times may differentiate among senders, by categories of payment orders, or among payment orders, amendments or cancellations. For example, payment orders to be executed on Fedwire could have a cut-off of 2 p.m. while payment orders to be executed through a local ACH might have a cut-off of 3 p.m. Historical Data Laws 1990, SB 641, c. 110, § 6, eff. July 1, 1991; Amended by Laws 2005, HB 2028, c. 139, § 34, eff. January 1, 2006 (superseded document available).