815 ILCS 5/2.13
"Effective date" when used with respect to a registration under the Federal 1933 Act means the date and time as of which a statement for the registration of securities under said Act first becomes effective or, upon the election of an applicant for registration under subsection A of Section 5, subsection A of Section 6 or subsection A of Section 7 of this Act, the date and time as of which a post-effective amendment to the registration statement filed under the Federal 1933 Act relating to such securities becomes effective; provided that in the case of securities initially registered under the Federal 1933 Act for the invitation of competitive bids, "effective date" shall mean the date upon which a post-effective amendment to the registration statement filed under the Federal 1933 Act relating to such securities becomes effective for the first offering of such securities otherwise than for such invitation or, upon the election of any applicant for registration under subsection A of Section 5, subsection A of Section 6 or subsection A of Section 7 of this Act, the date and time as of which a subsequent post-effective amendment filed under the Federal 1933 Act relating to such securities becomes effective.
815 ILCS 5/2.13