Mich. Comp. Laws § 125.1449d: Sale of premises at public sale; hours; location; appointed person; highest bidder.

Sec. 49d.

The sale shall be at public sale, between the hours of 9 a.m. and 4 p.m., at the place of holding the circuit court for the county in which the premises to be sold, or some part of them, are situated, and shall be made by the person appointed for that purpose in the mortgage, or by the sheriff, undersheriff, or a deputy sheriff of the county, to the highest bidder.