N.Y.C. Charter § 1510: Section 1510. Annual record of assessed valuation; public inspection.

The books of the annual record of the assessed valuation of real estate shall be opened to the public not later than the fifteenth day of January in each year, not a Saturday, Sunday or legal holiday, and remain open during the usual business hours for public inspection and examination until the first day of March thereafter. The commissioner, previous to and during the time such books are open to public inspection, shall advertise such fact in the City Record and in such other newspaper or newspapers published in the several boroughs as may be authorized by the director of the City Record with the approval of the mayor and the comptroller.