A party affected by an Excuse event shall use reasonable efforts to overcome the event as promptly as possible and shall notify the other party of the event within fifteen (15) days of its occurrence. The notice shall (a) describe the Excuse event in reasonable detail, (b) explain why the Excuse event was not reasonably within the control of the affected party and could not have been prevented or overcome by the exercise of reasonable diligence, and (c) state the expected duration of the Excuse event. If a party fails to give notice of an Excuse event within this 15-day period, the Excuse event will excuse only performance due on or after the date on which the notice is actually received by the other party.