World War II Britain outdid its allies by adopting "double summer time", setting clocks two hours forward, putting London temporarily in the odd position of being one hour later than Paris, creating what must have been a monumental headache for D-Day planners. Most people say "Daylight Savings Time", but there really is only one.
Who's in charge of time?
Daylight Saving Time was initially enacted to save energy. Today, however, time-zone boundaries and DST's scheduling are regulated by the Department of Transportation.
Dr. Estemalik said those impacted by headaches during the time change may want to consider taking melatonin to help them get a good night's sleep because regulating the sleep cycle can help keep headaches at bay. "I can't tell you how many people have come up to me who have said, even my high school age kid, it's hard to get him up in the morning when we fall back the clocks". Some studies also claim crime decreases the day after Daylight Saving Time resumes. By advocating for daylight saving time, he did not practice what he preached of "early to bed, early to rise".More news: US Sees National Security Risk From Broadcom's Qualcomm Deal
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Not everyone agrees it offers energy-saving benefits, however.
Whether to observe daylight saving time is purely a state matter, so how a state determines that - through law, resolution, or executive order - is up to the state. However, it was nixed later that year but it persisted in some form at local or state levels for 48 years before being officially recognized again nationally in 1966 by the Uniform Time Act. Arizona hasn't had to spring forward since 1968 since they already see plenty of sunlight year-round.
Arizona, Hawaii, and the territories like Puerto Rico, Virgin Islands, and American Samoa do not use DST. It ends up fine either way but why not just stick with one or the other? Twenty-six states considered making daylight saving time permanent a year ago, according to Time Zone, a group tracking and promoting the effort.