S.D. Codified Laws § 62-4-27
Current with legislation signed by the governor on or before 3/6/2024
As to employees in employments in which it is the custom to operate for a part of the whole number of working days in each year, the average weekly wages shall be ascertained by multiplying the employee's average day's earnings by number of days which it is customary in such employment to operate during a year, but not less than two hundred, and dividing by fifty-two.
SDCL 62-4-27