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Arizona (with the exception of the Navajo Nation) and Hawaii do not observe Daylight Saving Time.
Indiana adopted its use beginning in 2006. American Samoa, Guam, Puerto Rico, and the Virgin Islands still do not observe DST.

Daylight saving time in the United States - Wikipedia

en.wikipedia.org/wiki/Daylight_saving_time_in_the_United_States

During World War I, in an effort to conserve fuel, Germany began observing DST on May 1, 1916. The rest of ...

Most of Arizona Has No Daylight Saving Time - Time and Date

www.timeanddate.com/time/us/arizona-no-dst.html

Almost all of the US state of Arizona does not use Daylight Saving Time (DST), ... set the clocks forward 1 hour in spring for DST with the rest of the United States.

Daylight Savings Time: 7 Surprising Things You May Not Know

news.nationalgeographic.com/news/2015/03/150306-daylight-savings-time-spring-forward-united-states-science-nation/

Mar 6, 2015 ... For most of the United States, this weekend sees the return of clock ... Each U.S. state and territory is free to ignore daylight savings time, ... "Many people don't want to move their clocks, whether it's ... Research shows that given an extra hour of evening daylight, many Americans use the time to go out...

Which states do not observe Daylight Saving Time? | Tulsa City ...

www.tulsalibrary.org/faq/which-states-do-not-observe-daylight-saving-time

Currently, Arizona, Hawaii, the eastern time zone portion of Indiana, Puerto Rico, the U.S. Virgin Islands and American Samoa do not observe Daylight Saving ...

POLL: Do you think daylight saving time is still necessary?

www.accuweather.com/en/weather-news/poll-fall-back-end-daylight-saving-time/36571690

Nov 7, 2016 ... Homes would need to use less energy to stay lit. ... Among the states that don't currently participate in daylight saving are Arizona and Hawaii, ...

Which states want to drop daylight saving time? - CSMonitor.com

www.csmonitor.com/USA/USA-Update/2016/1105/Which-states-want-to-drop-daylight-saving-time

Nov 5, 2016 ... ... along with three US territories, already don't observe daylight saving time. ... it wasn't adopted in the United States for well over another century. ... found annual energy usage declined about 0.03 percent because of the ...

Daylight Saving Time - Infoplease

www.infoplease.com/spot/daylight1.html

The federal law that established "daylight time" in the United States does not require any ... summer sun in those regions you can understand why residents don't need another hour of sunlight. ... Most of Canada uses Daylight Saving Time.

Daylight Saving Time: How it Started & Why Some States Don't ...

www.theblaze.com/news/2011/11/02/daylight-savings-time-how-it-started-why-some-states-dont-participate/

Nov 2, 2011 ... Arizona, Hawaii, American Samoa, Puerto Rico and the Virgin Islands don't participate in daylight saving. Indiana used to be split, but opted for ...

Why doesn't Arizona observe daylight-saving time? - AZCentral.com

www.azcentral.com/story/news/local/arizona/2015/01/09/arizona-daylight-saving-explainer/21500667/

Jan 9, 2015 ... Daylight-saving time and Arizona: Why they don't mix ... States could opt out, but Arizona took part that first summer and realized that late ...