New York Codes, Rules and Regulations
Title 15 - Department of Motor Vehicles
Chapter I - REGULATIONS OF THE COMMISSIONER
Subchapter F - BUSINESSES REQUIRING LICENSES
Part 79 - Motor Vehicle Inspection
Section 79.3 - Schedule of inspection

(a) Every motor vehicle and trailer registered in this State is required to be inspected prior to midnight of the expiration date printed on its current inspection sticker or if no expiration date is printed on the current inspection sticker, then it is required to be inspected within one year from the last day of the month punched. Upon the casual (non-dealer) sale or transfer of a motor vehicle, any certificate of inspection issued prior to the date of the sale or transfer shall be deemed invalid. Every motor vehicle and trailer must be inspected upon change of registrant.