Occurs twice a year; spring forward, fall back to make better use of daylight. In spring, the clocks go forward an hour.
Pro Tip 2/3
Schedule Changes
May affect transportation, meetings, and TV schedules, so check updates during these periods. My favorite show is one hour later because the clocks go forward tonight.
Pro Tip 3/3
Night Shortening
Sleep may be shorter on the night when the time moves forward. I'm tired because the clocks went forward and I lost an hour of sleep.