What to know about daylight saving time and when to adjust your clock.

A bill recently introduced in Congress proposes half-daylight saving time, permanently setting clocks 30 minutes forward from standard time.

As the saying goes, "spring forward, fall back." But why do we change the clocks at 2 a.m.?

Plan on a glorious extra hour of sleep as most of America "falls back" into standard time. But make sure to get outside for some morning sun, too — it'll help your body clock reset faster.Daylight ...