Since passage of the Energy Policy Act of 2005, daylight saving time in the United States has begun annually on the second Sunday in March and ended on the first Sunday in November. When daylight saving time begins in March, clocks "spring forward" one hour, and when it ends in November, clocks "fall back" one hour.

Daylight saving ends on Nov. 3, when clocks get turned back one hour. The switch happens at 2 a.m. local time. So, at 1:59:59 a.m. on Nov. 3, your digital clocks, like the one on your cellphone, will not jump to 2 a.m. — they will fall back to 1 a.m. You will need to reset your analog clocks and any clocks that do not automatically adjust.