Get ready to move your clocks ahead this weekend.

Daylight Saving Time ( DST ) officially begins at 2:00 a.m. Sunday. That means you will " spring forward " and move your clocks ahead one hour , except in Arizona , they were smart and opted out of Daylight Saving Time. The practice of trying to save daylight began in 1918 so as to create more light in the evening. DST will last until November 1, 2020.