(DST pin) For decades, daylight saving in the United States was a confounding patchwork of local practices.
After the national repeal in 1919, some states and cities, including New York City and Chicago, continued to shift their clocks. National daylight saving time returned during World War II, but after its repeal three weeks after war’s end the confusing hodgepodge resumed. States and localities could start and end daylight saving whenever they pleased, a system that Time magazine (an aptly named source) described in 1963 as “a chaos of clocks.” In 1965 there were 23 different pairs of start and end dates in Iowa alone, and St. Paul, Minnesota, even began daylight saving two weeks before its twin city, Minneapolis. Passengers on a 35-mile bus ride from Steubenville, Ohio, to Moundsville, West Virginia, passed through seven time changes. Order finally came in 1966 with the enactment of the Uniform Time Act, which standardized daylight saving time from the last Sunday in April to the last Sunday in October, although states had the option of remaining on standard time year-round.