The time to "spring forward" is nearly upon us. See when you'll have to adjust your clocks.

Corrections & clarifications: An earlier version of this story didn't explain the origins of daylight saving time, which was the result of a basic framework originally introduced in the Uniform Time ...

For example, on Saturday, the day before the time change took effect, sunrise in Boston was at 6:09 a.m. and sunset at 5:41 p.m., according to the National Weather Service. On Sunday, after the clocks ...