USA - 2005 Energy Bill

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Daylight Saving Time USA

Energy Policy Act of 2005

USA Daylight Saving Time change from 2007

Starting March 11, 2007, daylight saving time was extended by at least another four weeks, from the second Sunday of March to the first Sunday of November.

The change was introduced by the Energy Policy Act of 2005 (USA: Public Law 109-58 / 109th Congress / Section 110)

The Energy Policy Act of 2005 (Public Law 109-58) is a statute which was passed by the United States Congress on July 29, 2005 and signed into law on August 8, 2005 at Sandia National Laboratories in Albuquerque, New Mexico.

The amendment to shorten the winter, lengthen the summer and save energy by extending daylight saving time by at least four weeks, was first introduced by Representatives Fred Upton (Republican-Michigan) and Edward J. Markey (Democrat-Massachusetts).

The House of Representatives had originally approved a motion that would have extended DST even further.  Proponents claimed that the extension would save "the equivalent of" 10,000 barrels of oil per day.

As proposed this puts the USA out of step with other countries in North America (for example Canada) but each country is considering their position.


Public Law 109-58 109th Congress


    (a) Amendment.--Section 3(a) of the Uniform Time Act of 1966 (15
U.S.C. 260a(a)) is amended--
            (1) by striking ``first Sunday of April'' and inserting
        ``second Sunday of March''; and
            (2) by striking ``last Sunday of October'' and inserting
        ``first Sunday of November''.

    (b) Effective Date.--Subsection (a) <<NOTE: 15 USC 260a
note.>> shall take effect 1 year after the date of enactment of this Act
or March 1, 2007, whichever is later.

    (c) Report to Congress.--Not <<NOTE: 15 USC 260a note.>> later than
9 months after the effective date stated in subsection (b), the
Secretary shall report to Congress on the impact of this section on
energy consumption in the United States.

    (d) Right to Revert.--Congress retains the right to revert the
Daylight Saving Time back to the 2005 time schedules once the Department
study is complete.


USA & Canada clocks
on Daylight Saving Time until:
Sunday 1 November 2015 2am local time

EU / UK clocks on
GMT until:

Sunday 29 March 1am GMT

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USA - 2005 Energy Bill