Michigan mortgage foreclosure auctions are commonly called sheriff’s sales. In a foreclosure by advertisement, six months after the sale is the most common redemption period, but shorter and longer periods apply. To redeem, you need the sale amount plus required interest and charges—not just the missed payments. A sale may still be possible if the required payoff or redemption can be completed before the applicable deadline.
Our agreement of sale will often get a sheriff's sale postponed so we can close. Signing alone doesn't postpone it automatically; we use the agreement to ask for the postponement, and it works more often than people think.
Have the title company or an attorney confirm the sale status, exact deadline, and amount needed before relying on a closing date. The postponement request does not itself change the applicable redemption deadline.
Sources: Michigan State Housing Development Authority foreclosure stages · Michigan law on redemption periods and amounts · Michigan law on adjourning a foreclosure sale.