To extend, temporarily, daylight saving time, and for other purposes.

For each State and area of a State that is not exempt from section 3(a) of the Uniform Time Act of 1966 (15 U.S.C. 260a(a)), such section shall be carried out in calendar years 2020 and 2021 as if the periods described in such section for such calendar years described just one period that commenced at 2 o'clock antemeridian on March 8, 2020, and ends at 2 o'clock antemeridian on November 7, 2021.