Summer 2011: When And Why We Use It

No, it's not your imagination. You really are waiting for more to get that extra hour of sleep this year.

In fact, daylight saving time (DST) is coming to an end on Sunday morning, November 6, when you move your clocks back one hour. Or you forget to move clocks back one hour and find yourself at work in the early hours before the Office lights even included.

The extended daylight saving time started back in 2007, after the United States energy policy Act 2005, entered into force and the clock was set back one hour on the first Sunday in November instead of the last Sunday in October, according to the international business times. They also changed the daylight saving time begins on the second Sunday of March on the first Sunday of April.

There were a number of conflicting reports about how much energy is saved for daylight saving time. Back in the 1970-IES Research has shown that we are saved by 1% of the energy at the national level, which was a big motivation to adopt DST. On the one hand, States such as California State energy savings are insignificant. But another report, published in 2008, the United States Department of energy concluded 4 weeks extra daylight saving time can save 1.3 trillion watt-hours per day, enough to power houses in the year 100000 reports Scientific American.

While Benjamin Franklin first came up with the idea in the year 1784, TimeandDate.com explains, DST was not used until the first world war to save energy. United States observed DST year round during the second world war and implemented it during the energy crisis in the 1970-IES, notes the Scientific American.

Not everyone in the United States observes daylight saving time (DST), including Hawaii, most of Arizona, Puerto Rico, the Virgin Islands, American Samoa, Guam and Northern Mariana Islands.

For the post Chris Klein on ABC15.com discusses why most of Arizona does not observe the change of time: "in accordance with the editorial of the Arizona Republic from 1969 onwards, due to the State in extreme heat. If Arizona observe daylight saving time, the Sun will be out till 21.00 in the summer (and not 8:0, as it does now). "

Summer 2011: When And Why We Use It