40 CFR § 23.10 - Timing of Administrator's action under the Federal Food, Drug, and Cosmetic Act.
Unless the Administrator otherwise explicitly provides in a particular order, the time and date of the issuance of a regulation under section 21 U.S.C. 346a(e)(1)(C), or any order under 21 U.S.C. 346a(f)(1)(C) or 21 U.S.C. 346a(g)(2)(C), or any regulation that is the subject of such an order, shall, for purposes of 28 U.S.C. 2112, be at 1 p.m. eastern time (standard or daylight, as appropriate) on the date that is for a Federal Register document, 2 weeks after the date when the document is published in the Federal Register, or for any other document, 2 weeks after it is signed.