31 C.F.R. § 589.310 – Effective date.

(a) The term effective date refers to the effective date of the applicable prohibitions and directives contained in this part as follows:
1. (1) With respect to a person whose property and interests in property are blocked pursuant to § 589.201(a)(2), 12:01 a.m. eastern daylight time, March 17, 2014;
2. (2) With respect to a person whose property and interests in property are otherwise blocked pursuant to § 589.201, the earlier of the date of actual or constructive notice that such person's property and interests in property are blocked;
3. (3) With respect to the transactions prohibited by § 589.202, § 589.203, § 589.204, or § 589.205, the earlier of the date of actual or constructive notice that a person was added to the Sectoral Sanctions Identifications List (SSI List);
4. (4) With respect to the transactions prohibited by §§ 589.206 through 589.208, 3:30 p.m. eastern standard time, December 19, 2014; and
5. (5) With respect to the transactions prohibited by § 589.209, the effective date of a prohibition on the opening or a prohibition or strict condition imposed on the maintaining of a correspondent account or a payable-through account in the United States by a U.S. financial institution for a particular foreign financial institution pursuant to § 589.209(d) is the earlier of the date the U.S. financial institution receives actual or constructive notice of such prohibition or condition.
(b) For the purposes of this section, constructive notice is the date that a notice of the blocking of the relevant person's property and interests in property, or a notice of the person's addition to the SSI List, or a notice of the imposition of a prohibition or strict condition pursuant to § 589.209, is published in the Federal Register.