This Act may be cited as the Daylight Act.

Section 3(a) of the Uniform Time Act of 1966 (15 U.S.C. 260aU.S. Code — Title 15, Section 260aView official source on GovInfo) is amended— (1) by inserting or may by law apply the advancement of time described in this section for the duration of the year, after may by law exempt itself from the provisions of this subsection providing for the advancement of time,; (2) by striking the standard time otherwise applicable during that period and inserting the same standard time; (3) by striking may by law exempt either the entire State as provided in (1) or and inserting, by law, may apply either standard time provided for in paragraph (1) to the entire State,; and (4) by inserting, or may apply the advancement of time for the duration of the year to the entire area of the State lying within any time zone before the period at the end.