Some time zones don’t participate in daylight saving time, and a few places divide their region into half-hour zones.Īctually, it’s even more complicated than that.
For us the world is divided into 24 time zones, and each zone differs by an hour from the time zone next to it. Most countries have signed on to the idea of a standard world time system. The preferred spelling is ‘daylight saving time.’Ī sad footnote is that supposedly we don’t save energy anymore by switching to daylight saving time because the energy we save by not having to turn on the lights as early is more than offset by how much more we run our air conditioners while we’re home in the warmer evenings. The words are not capitalized, and there’s no hyphen. Remember the spelling by thinking that the whole idea was that people were saving energy. When the United States joined the war, lawmakers agreed that moving the clocks was a good way to save energy, and in the official 1918 law that established the time change in the U.S., they named it “daylight saving time.” It is still generally agreed to be “daylight saving time” today, and not “savings time” (1, 2, 3)- no S at the end. Britain and Germany were the first countries to institute a time change during World War I.
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