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why did the united states start daylight savings time why did the united states start doing daylight savings time why did the united states go to daylight savings time why does the united states do daylight savings time why does the united states use daylight savings time why does the united states have daylight saving time when did the united states start observing daylight savings time when did the united states start having daylight savings time what year did the united states adopt daylight savings time when did the united states begin using daylight savings time
