Create the calendar. DATA= identifies the activities data
set; HOLIDATA= identifies the holidays data set. FILL displays all months,
even those with no activities. By default, only months with activities appear
in the report. INTERVAL=WORKDAY specifies that activities and holidays are
measured in 8-hour days and that PROC CALENDAR schedules activities only Monday
through Friday.
proc calendar data=acts holidata=holidays fill interval=workday;