49 U.S. Code § 312 - Alternative timing system
 So in original.
The date of enactment of the National Timing Resilience and Security Act of 2018, referred to in subsecs. (b)(1) and (c)(1), (2), is the date of enactment of section 514 of Pub. L. 115–282, which was approved Dec. 4, 2018.
Section 1618 of the National Defense Authorization Act for Fiscal Year 2017, referred to in subsec. (b)(1), is section 1618 of Pub. L. 114–328, div. A, title XVI, Dec. 23, 2016, 130 Stat. 2595, which is not classified to the Code.
Section 8507(d) of div. G of Pub. L. 116–283 effective as if included in Pub. L. 115–282, see section 8507(d)(7) of Pub. L. 116–283, set out as a note under section 1226 of Title 33, Navigation and Navigable Waters.
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