Brazilian president Dilma Rousseff has vetoed a parliamentary bill to turn the clocks 1 hour back in the state of Acre after Brazil's parliament had already voted "yes" for the bill to go ahead.
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Arizona is an exception to the rule when it comes to daylight saving time in the United States. Most parts of the state, except the Navajo Nation community, observe Mountain Standard Time (MST) all year long. more
A Time Zone refers to any of 24 regions loosely divided by longitude, where the same standard time is kept. more
DST has become a political issue, while others debate whether setting the clocks one hour ahead in the spring has the intended effect of conserving energy or reducing road accidents. more