Uniform Time Act
Gale McGee (D–WY) and Norris Cotton (R–NH) on April 13, 1966 |
The Uniform Time Act of 1966,
History
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
Specifications
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
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.
The territories of the Northern Mariana Islands, Puerto Rico, 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time zone boundary, until April 2, 2006, when the entire state once again observed DST, a first since Congress repealed the Standard Time Act of 1918.[5]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
- 1918 Standard Time Act
- Time in Indiana
- Time in Arizona
- Sunshine Protection Act
References
- ^ 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.
- Pub. L.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.
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: 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.