N.Y. Comp. Codes R. & Regs. tit. 9, § 2108.2 – Time for filing protests.

(a) A protest against any provision of this Subchapter may be filed at any time after the effective date thereof.
(b) A protest against an order of a local rent administrator must be filed with the administrator within 33 days after the date such order is issued unless subdivision (c) of this section is applicable. A protest served by mail, postmarked not more than 33 days after the date of such order, shall be compliance with this subdivision.
(c) A protest may be filed by a tenant against an order of a local rent administrator granting a certificate of eviction relating to a housing accommodation other than in a one- or two-family house after the expiration of the 33-day period provided for in subdivision (b) of this section and prior to the date of the issuance of a final order by a court in summary dispossess proceedings, where there has been a change of circumstances due to the fact that other suitable housing accommodations subject to landlord's control have become vacant since the date of the order granting the certificate of eviction.