N.Y.C. Admin. Code § 13-110: § 13-110 Purchase of credit for past teaching service in the city university of New York.

In the same manner as hereinbefore provided under section 13-108 of this chapter for the purchase of city-service preceding membership, on or before January first, nineteen hundred sixty-five, or within one year after first beginning membership, credit may be purchased for teaching service in the city university of New York preceding membership and if the teaching service was on an hourly basis, credit of one year of city service for retirement purposes shall be allowed for a minimum of thirty weeks per year with an average service of fifteen hours of teaching per week (four hundred fifty hours per year), provided that no such member shall receive more than one year of credit for service rendered during one calendar year.