92 Ill. Adm. Code 14.1160
Computation of Time
Section 14.1160 Computation of
Time
a) In
computing any period of time prescribed or allowed by this Subpart, Notice,
Order, regulation of the Division, the ALJ, or by any applicable statute; the
day of the act, event or default after which the designated period of time
begins to run, is not to be included.
b) The
last day of the period so computed is to be included, unless it is a Saturday,
Sunday or legal holiday for the Division, in which event the period runs until
the end of the next day which is neither a Saturday, Sunday nor a legal holiday
for the Division. When the period of time prescribed is seven days or less,
intermediate Saturdays, Sundays and legal holidays for the Division shall be
excluded in the computation.