EXAMPLE: Company B's STC plan is approved with a start date of Sunday, June 6, 2021. For purposes of Company B's STC plan, June 2021 is not a full calendar month, therefore, June 2022 is the 12th full calendar month that follows the month in which the start date of the plan occurs. Company B's STC plan can expire no later than Saturday, June 25, 2022, which is the last Saturday in the 12th full calendar month after the month in which the start date of the plan occurs.
Ill. Admin. Code tit. 56, § 2870.20