Okla. Stat. tit. 12A, § 12A-4-108: Time of Receipt of Items

TIME OF RECEIPT OF ITEMS

(a) For the purpose of allowing time to process items, prove

balances, and make the necessary entries on its books to determine

its position for the day, a bank may fix an afternoon hour of 2:00

p.m. or later as a cut-off hour for the handling of money and items

and the making of entries on its books.

(b) An item or deposit of money received on any day after a

cut-off so fixed or after the close of the banking day may be

treated as being received at the opening of the next banking day.