Ariz. Rev. Stat. § 47-4213
A. With respect to settlement by a bank, the medium and time of settlement may be prescribed by federal reserve regulations or circulars, clearing-house rules and the like or agreement. In the absence of such prescription:
2. The time of settlement is:
C. If settlement for an item is made by cashier's check or teller's check and the person receiving settlement, before its midnight deadline: