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Daylight Saving Time is about to begin -- that time of year when most people in the country lose an hour of sleep in exchange for more light in the evenings. It's more than just a custom; Daylight Saving is the law in places where it's observed.
The practice of "springing forward" in March and "falling back" in November is observed in most states. The two exceptions are Arizona and Hawaii, according to National Geographic News.
But it wasn't always like this. In fact, Daylight Saving Time is officially less than a century old. Let's turn back the clock and see how it became law: