The normal retirement date of each firefighter will be the first day of the month coinciding with, or next following, the earlier of the date on which such firefighter has attained and completed twenty (20) years of service, regardless of age, or at fifty-five (55) years of age with ten (10) years of service. There is no age requirement for a normal retirement. For all members first hired on or after February 5, 2019 (hereinafter “Tier 2 members”), the normal retirement date will be the first day of the month coinciding with or next following the date on which the firefighter has attained and completed twenty- five (25) years of service, regardless of age, or at fifty- five (55) years of age with ten (10) years of service. If a Tier 2 member separates from service with less than twenty-five (25) years of service the normal retirement date shall be the first day of the month coinciding with, or next following, attainment of age fifty-five (55).