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| | History & info - Daylight Saving Time, early adoption, U.S. law |
 | | Daylight Saving Time has been used in the U.S. and in many European countries since World War I. At that time, in an effort to conserve fuel needed to produce electric power, Germany and Austria took time by the forelock, and began saving daylight at 11:00 p.m. |
 | | Daylight Saving Time became a local option, and was continued in a few states, such as Massachusetts and Rhode Island, and in some cities, such as New York, Philadelphia, and Chicago. |
 | | In 1972, Congress revised the law to provide that, if a state was in two or more time zones, the state could exempt the part of the state that was in one time zone while providing that the part of the state in a different time zone would observe Daylight Saving Time. |
| webexhibits.org /daylightsaving/e.html (0 words) |
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