What changes when the clocks fall back this weekend

Millions of Americans will gain an hour of sleep this weekend when the twice-a-year time change commonly known as daylight savings ends for 2026. Most of the U.S. will "fall back" an hour when the clocks change at 2 a.m. on Sunday.Here's what to know about what's formally known as daylight saving time as it ends for the year:What is daylight saving time, and why do we have it?Daylight saving time is the period during the year, from March to early November, when the majority of the U.S. operates