It wasn't until World War II that the idea was tried again in the States. This time, it fared better -- it was saving energy, and crime and traffic accident rates dropped. Congress left it up to individual states to decide if they wanted to keep DST until 1966, when Congress nationalized it to save confusion over who was on DST.
The time was set at the last Sunday in April to last Sunday in October. In 1986, President Reagan moved it forward to the first Sunday in April.
Then, in 2007, we moved the dates again. Now, it begins on the second Sunday in March, and ends on the first Sunday in November.
For More Information: