The Uniform Time Act of 1966, Pub. L.Tooltip Public Law (United States) 89–387, 80 Stat. 107, enacted April 13, 1966, was a Law of the United States to "promote the adoption and observance of uniform time within the standard time zones" prescribed by the Standard Time Act of 1918. Its intended effect was to simplify the official pattern of where and when daylight saving time (DST) is applied within the U.S. Prior to this law, each state had its own scheme for when DST would begin and end, and in some cases, which parts of the state should use it.[1]
Uniform Time Act
Long title
An Act to promote the observance of a uniform system of time throughout the United States.
The law, as originally written, required states that observe DST to begin it at 2 a.m. local time on the last Sunday in April, and to end it at 2 a.m. local time on the last Sunday in October and explicitly preempted all state laws related to daylight saving time per the weights and measures power given to Congress in Article 1, Section 8 of the U.S. Constitution. In 1972, the act was amended to allow states with more than one timezone to exempt only one timezone from DST, in addition to exempting the whole state.[2] The law was later amended again in 1986 to move the uniform start date for DST to the first Sunday in April (effective 1987). The latest amendment, part of the Energy Policy Act of 2005, extends DST by four or five weeks by moving the uniform start date for DST to the second Sunday in March and the end date to the first Sunday in November (effective 2007). The Department of Energy was required to report to Congress the impact of the DST extension by December 1, 2007 (nine months after the statute took effect). The report, released in October 2008, reported a nationwide electricity savings of 0.03% for the year of 2007.[3]
Specificationsedit
The law does not require that all states observe DST. Individual states may exempt themselves from DST and observe standard time year-round by passing a state law, provided:
if the state lies entirely within a time zone, that the exemption apply statewide, or
if the state is divided by a time zone boundary, that the exemption apply statewide or to the entire part of the state on one side of the boundary.
Non-observersedit
observance of daylight saving in Arizona varies
The state of Hawaii has never observed daylight saving, even during World War II when "War Time" was observed by other states as an energy saving measure.
Observance of daylight saving varied by county in Indiana, which is divided by the Eastern/Central time zone boundary, until April 2, 2006, when the entire state once again observed DST, a first since Congress repealed the Standard Time Act of 1918.[5]
Arizona has not observed daylight saving since the year following the enactment of the Uniform Time Act of 1966. Native American nations within Arizona may choose. The Navajo Nation has chosen to use daylight saving throughout its territory, which includes parts of New Mexico and Utah where daylight saving is observed. The Hopi Nation, with territory surrounded entirely by the Arizona portion of the Navajo Nation, has chosen not to observe daylight saving.
^Jennifer Vernon (March 31, 2006). . National Geographic. Archived from the original on June 2, 2004. Retrieved June 23, 2012.
^An Act to amend the Uniform Time Act to allow an option in the adoption of advanced time in certain cases. Pub. L.Tooltip Public Law (United States) 92–267
^Belzer, David B. (October 2008). Impact of Extended Daylight Saving Time on National Energy Consumption. U.S. Department of Energy. (PDF). Archived from the original (PDF) on May 18, 2013. Retrieved October 21, 2013.{{cite web}}: CS1 maint: archived copy as title (link)
^Jennifer Vernon (March 31, 2006). . National Geographic. Archived from the original on June 2, 2004. Retrieved June 23, 2012.
^Justin L. Mack (March 8, 2019). "Looking back at Indiana's complicated relationship with time: Why Indiana observes daylight saving time". IndyStar. Retrieved November 24, 2020.
February 16, 2024
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The Uniform Time Act of 1966 Pub L Tooltip Public Law United States 89 387 80 Stat 107 enacted April 13 1966 was a Law of the United States to promote the adoption and observance of uniform time within the standard time zones prescribed by the Standard Time Act of 1918 Its intended effect was to simplify the official pattern of where and when daylight saving time DST is applied within the U S Prior to this law each state had its own scheme for when DST would begin and end and in some cases which parts of the state should use it 1 Uniform Time ActLong titleAn Act to promote the observance of a uniform system of time throughout the United States NicknamesUniform Time Act of 1966Enacted bythe 89th United States CongressEffectiveApril 1 1967CitationsPublic law89 387Statutes at Large80 Stat 107CodificationActs amendedStandard Time Act of 1918Titles amended15 U S C Commerce and TradeU S C sections created15 U S C ch 6 subch IX 260 267Legislative historyIntroduced in the Senate as S 1404 by Sens Gale McGee D WY and Norris Cotton R NH Passed the House on March 16 1966 292 93 in lieu of H R 6785 Reported by the joint conference committee on March 30 1966 agreed to by the House on March 30 1966 282 91 Signed into law by President Lyndon B Johnson on April 13 1966 Contents 1 History 1 1 Specifications 2 Non observers 3 See also 4 ReferencesHistory editThe law as originally written required states that observe DST to begin it at 2 a m local time on the last Sunday in April and to end it at 2 a m local time on the last Sunday in October and explicitly preempted all state laws related to daylight saving time per the weights and measures power given to Congress in Article 1 Section 8 of the U S Constitution In 1972 the act was amended to allow states with more than one timezone to exempt only one timezone from DST in addition to exempting the whole state 2 The law was later amended again in 1986 to move the uniform start date for DST to the first Sunday in April effective 1987 The latest amendment part of the Energy Policy Act of 2005 extends DST by four or five weeks by moving the uniform start date for DST to the second Sunday in March and the end date to the first Sunday in November effective 2007 The Department of Energy was required to report to Congress the impact of the DST extension by December 1 2007 nine months after the statute took effect The report released in October 2008 reported a nationwide electricity savings of 0 03 for the year of 2007 3 Specifications edit The law does not require that all states observe DST Individual states may exempt themselves from DST and observe standard time year round by passing a state law provided if the state lies entirely within a time zone that the exemption apply statewide or if the state is divided by a time zone boundary that the exemption apply statewide or to the entire part of the state on one side of the boundary Non observers edit nbsp observance of daylight saving in Arizona variesThe state of Hawaii has never observed daylight saving even during World War II when War Time was observed by other states as an energy saving measure The commonwealths of the Northern Mariana Islands and Puerto Rico and the territories of American Samoa Guam and U S Virgin Islands also do not observe Daylight Saving Time 4 Observance of daylight saving varied by county in Indiana which is divided by the Eastern Central time zone boundary until April 2 2006 when the entire state once again observed DST a first since Congress repealed the Standard Time Act of 1918 5 Arizona has not observed daylight saving since the year following the enactment of the Uniform Time Act of 1966 Native American nations within Arizona may choose The Navajo Nation has chosen to use daylight saving throughout its territory which includes parts of New Mexico and Utah where daylight saving is observed The Hopi Nation with territory surrounded entirely by the Arizona portion of the Navajo Nation has chosen not to observe daylight saving See also edit1918 Standard Time Act Time in Indiana Time in ArizonaReferences edit Jennifer Vernon March 31 2006 The History of Daylight Saving Time National Geographic Archived from the original on June 2 2004 Retrieved June 23 2012 An Act to amend the Uniform Time Act to allow an option in the adoption of advanced time in certain cases Pub L Tooltip Public Law United States 92 267 Belzer David B October 2008 Impact of Extended Daylight Saving Time on National Energy Consumption U S Department of Energy Archived copy PDF Archived from the original PDF on May 18 2013 Retrieved October 21 2013 a href Template Cite web html title Template Cite web cite web a CS1 maint archived copy as title link Jennifer Vernon March 31 2006 The History of Daylight Saving Time National Geographic Archived from the original on June 2 2004 Retrieved June 23 2012 Justin L Mack March 8 2019 Looking back at Indiana s complicated relationship with time Why Indiana observes daylight saving time IndyStar Retrieved November 24 2020 Retrieved from https en wikipedia org w index php title Uniform Time Act amp oldid 1196202907, wikipedia, wiki, book, books, library,
