Reference: Repeat_Time
The Workday modifier is applied only to the keyword values for the period, and not Hours, Days, Minutes, or Seconds. It will adjust the actual start day of the script so it does not take place on a weekend or a holiday. The program attempts to select the first workday that is earlier than the scheduled day, unless the workday would be in the previous month. In this case, the scheduled day is advanced to the next workday. The Daily value is always handled by advancing the day.