Standard Time Act - Misplaced Pages

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United States time zone and Daylight Saving Time law

This article is about the U.S. statute. For the Irish statute, see Standard Time Act, 1968. For the New Zealand statute, see Standard Time Act 1945.

Standard Time Act
Citations

Long title	An Act to save daylight and to provide standard time for the United States.
Nicknames	Calder Act Standard Time Act of 1918
Enacted by	the 65th United States Congress
Effective	March 19, 1918
Public law	65-106
Statutes at Large	40 Stat. 450
Codification
U.S.C. sections created	15 U.S.C. ch. 6, subch. IX §§ 261–264
Legislative history
Introduced in the Senate as S. 1854 by William M. Calder (R-NY) Passed the House on March 15, 1918 (253-40) Signed into law by President Woodrow Wilson on March 19, 1918

The Standard Time Act of 1918, also known as the Calder Act, was the first United States federal law implementing Standard time and Daylight saving time in the United States. It defined five time zones for the continental United States and authorized the Interstate Commerce Commission to define the limits of each time zone.

The section concerning daylight saving time was repealed by the act titled An Act For the repeal of the daylight-saving law, Pub. L. 66–40, 41 Stat. 280, enacted August 20, 1919, over President Woodrow Wilson's veto.

As a result of a 1966 amendment of Section 261 to add more time zones, the wording in Section 264 of the act wrongly placed most of the state of Idaho (south of the Salmon River) in UTC−06:00 CST (Central Standard Time), but was amended in 2007 by Congress to UTC−07:00 MST (Mountain Standard Time). MST was observed prior to the correction.

References

The Uniform Time Act of 1966. Pub. L. 89–387, 80 Stat. 107, enacted April 13, 1966
Prerau, David (2006). Seize the Daylight: The Curious and Contentious Story of Daylight Saving Time. Thunder's Mouth Press. p. 90. ISBN 978-1-56025-796-7.
U S Congress (2010). Congressional Record, V. 153, PT. 4, February 17, 2007 to March 12, 2007. BERNAN Press. p. 5309. ISBN 9780160869761. Retrieved May 14, 2015.

v t e Time in the United States
States	Alabama Alaska Arizona Arkansas California Colorado Connecticut Delaware Florida Georgia Hawaii Idaho Illinois Indiana Iowa Kansas Kentucky Louisiana Maine Maryland Massachusetts Michigan Minnesota Mississippi Missouri Montana Nebraska Nevada New Hampshire New Jersey New Mexico New York North Carolina North Dakota Ohio Oklahoma Oregon Pennsylvania Rhode Island South Carolina South Dakota Tennessee Texas Utah Vermont Virginia Washington West Virginia Wisconsin Wyoming
Federal district	Washington, D.C.
Territories	American Samoa Guam Northern Mariana Islands Puerto Rico U.S. Virgin Islands
Legislation	Standard Time Act of 1918 Uniform Time Act of 1966 Emergency Daylight Saving Time Energy Conservation Act (1974) Energy Policy Act of 2005 Sunshine Protection Act
Daylight saving time History Permanent time observation

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