Don't forget to push your clocks ahead by an hour tonight for Daylight Savings Time (DST).

Yep, that means we lose hour of sleep.

DST goes into effect at 2 a.m., when clocks spring forward by an hour. As a result, mornings will be darker and evenings will be lighter.

The annual ritual started in World War I as a way to conserve energy by adding another hour of light to the day. DST will last until Nov. 7, when clocks fall back again.