Saturdays, Sundays and legal holidays for the State of Illinois shall be included in computing the time for any act in Subpart C of this Part, except that when such time expires on a Saturday, Sunday or legal holiday for the State of Illinois, such period shall be extended to include the next following business day.
Ill. Admin. Code tit. 8, § 1.245
Amended at 6 Ill. Reg. 14981, effective November 24, 1982