If a bank (including a Reserve Bank) or nonbank payor is delayed in acting on an item beyond applicable time limits because of interruption of communication or computer facilities, suspension of payments by a bank or nonbank payor, war, emergency conditions, failure of equipment, or other circumstances beyond its control, its time for acting is extended for the time necessary to complete the action, if it exercises such diligence as the circumstances require.
12 C.F.R. §210.14