This Agreement shall become effective upon ratification and shall remain in full force and effect until 11:59:59 PM, May 31, 2026, and thereafter for successive one (1)-year periods, unless terminated by either party sending to the other party written notice of the proposed termination at least sixty (60) days prior to the expiration date or unless the Agreement is extended by mutual written agreement. Notice of termination may be submitted by certified mail or email with a read receipt attached.