New York is a judicial foreclosure state. After a judgment of foreclosure and sale is signed, the court appoints a referee who sets a sale date, publishes a Notice of Sale in a designated newspaper for four consecutive weeks, and conducts the auction in a public location — typically the county courthouse or, for many Suffolk cases, the town hall of the property's township.
Because dates are set per case, the practical 'calendar' is the running list of published Notices of Sale plus each county's posted auction parts. Sales are frequently adjourned at the last minute — for loss-mitigation review, bankruptcy filings, or settlement conferences — so every date must be re-confirmed within 24 hours of the sale.