"When a domain name expires, the associated website and email services are typically taken offline shortly after, usually within a few days. Most registrars offer a grace period, typically around 30 days, where the domain can be renewed at the regular price. If not renewed within the grace period, the domain enters a redemption period, usually another 30 days, where it can still be renewed, but at a higher cost. If not renewed in either period, the domain is eventually deleted and becomes available for anyone to register."
So we could still have few days, or maybe a month if demand for domains isnt high. I dont know if site will be alive during grace period or just domain being still available to buy at same price.