- a) Except as otherwise provided, computation of time under this Subpart is based upon calendar days.
- b) In computing any period of prescribed time, the day on which the designated period of time begins is not included. The last day of the period is included unless it is a Saturday, Sunday or legal holiday on which the Department is not open for business, in which event the period runs until the end of the next day that is not a Saturday, Sunday or legal holiday.
- c) Saturdays, Sundays and legal holidays that fall within the prescribed time period are excluded from the computation of time when the prescribed time period is 7 days or less.
- d) A business day is any day the Department is open for business.
(Source: Added at 37 Ill. Reg. 14090, effective August 26, 2013)