Daylight saving time was established by the Standard Time Act of 1918. The Act was intended to save electricity for seven months of the year, during World War I.A Time-Change Timeline, National Public Radio, March 8, 2007 DST was repealed in 1919 over a Presidential veto,An Act For the repeal of the daylight-saving law, but standard time in time zones remained in law, with the Interstate Commerce Commission (ICC) having the authority over time zone boundaries. Daylight time became a local matter.
