For the purposes of subparagraph (A), the top 100 designated market areas shall be as determined by Nielsen Media Research and published in the Nielsen Station Index Directory and Nielsen Station Index United States Television Household Estimates or any successor publication as of the date of a satellite carrier’s application for certification under this section.
47 U.S. Code § 342 - Process for issuing qualified carrier certification
The date of enactment of the Satellite Television Extension and Localism Act of 2010, referred to in subsecs. (a)(2) and (b)(1), is the date of enactment of Pub. L. 111–175, which shall be deemed to refer to Feb. 27, 2010, see section 307(a) of Pub. L. 111–175, set out as an Effective Date of 2010 Amendment note under section 111 of Title 17, Copyrights.