This strategy was actually implemented during WWI, and not part of a green movement folks. It was, however, an effort to reduce energy usage in homes and save it for war production. During WWII, the federal government again required that the states observe the time change, as between WWI and WWII, states and local municipalities could chose whether or not to observer DST. In the year of 1966 however, Congress initiated and passed the Uniform Time Act, which standardized the actual duration for DST. There are several states and US properties that do not observe DST due to the fact that they are closer to the equator and days are more consistent in length throughout the year. Those states and territories are Arizona (except for some Indian Reservations), Hawaii, Puerto Rico, the U.S. Virgin Islands and American Samoa.
In 2007, with the passing of the Energy Policy Act in 2005, which implemented a 4 week increase in the length of DST. This act increased the length of DST from the second Sunday in March, to the First Sunday of November, in the hopes that it could save 10k barrels of oil every day through the reduced usage of power by businesses during the daylight hours. Unfortunately, it is nearly impossible to determine the actual amount of energy savings from DST, and it may even be possible that little to no energy whatsoever is saved by it.
For our friends across the Atlantic in Europe, they also have been taking advantage of the extra sunlight for decades, and in 1996 the European Union (EU) standardized a EU-wide European Summer Time which runs from the last Sunday in March to the last Sunday in October and ends, so for those of you whom are from Europe, don’t forget to turn your clocks back on October 31st this year as daylight savings ends!
In the southern hemisphere, or the continents of South America, Australia, and Africa, they also observe this standard, however seeing as summer comes in December, the DST is observed from October to March. Again, Countries that are on or nearer to the equator don’t observe DST since there is no distinct advantage of moving the clocks forward during the summer months, as the daylight hours are nearly the same throughout the year. There are two countries that observe DST throughout the entire year, those being Kyrgystan and Iceland, so the clocks are permanently forwarded an hour.
For those in the U.S. that observe DST, the savings time change for fall 2010 again is Sunday, November 7th, 2010 at 2 AM as dst ends, and for those of you in Europe, Daylight Savings Time ends Sunday, October 31st, 2010, so set your clocks back and don’t be an hour early for church!