The judge of the circuit court shall have power, upon request of the board of county commissioners or upon his own motion, by an order to that effect, to appoint and hold special terms, at the county seat of any county within his circuit, and such special terms shall be regarded the same as the regular terms prescribed by this chapter; provided that the order for any such special term shall be filed in the office of the clerk of courts at least ten days before the opening of such term.
SDCL 16-5-18