On February 21, 2017, the U.S. Environmental Protection Agency (EPA) issued a notice delaying the effective date from March 20, 2017, to March 21, 2017, of the notice issued on January 19, 2017. 82 Fed. Reg. 11218. The February 21 notice appears to correct a miscalculation of the 60-day freeze period required under the Regulatory Freeze Pending Review memorandum issued on January 20, 2017, to the notice EPA issued on January 19, 2017, titled Statutory Requirements for Substantiation of Confidential Business Information (CBI) Claims Under the Toxic Substances Control Act (TSCA). 82 Fed. Reg. 6522. Counting calendar days is never easy.