It’s time to move the clocks again.
Daylight saving time officially ends 2 a.m. local time Sunday, Nov. 1. That means most people will opt to move their clocks back one hour before they go to bed on Halloween night, Saturday, Oct. 31. That’s not as hard a task as it used to be since most people’s smart phones and other devices handle “falling back” 1 hour without any help.
The move from DST takes place almost everywhere in the U.S. with the exception of Hawaii and most of Arizona, which don’t observe the change.
Clocks will move ahead an hour at 2 a.m. March 14, 2021 with the start of daylight saving time.
The history of daylight saving time in the U.S. dates back to World War I when the government instituted the change to extend daylight working hours in an effort to save fuel. The change was made official in March 1918 only to go away after the war. It returned during World War II but uniform across the country.
Congress passed the Uniform Time Act in 1966, establishing a schedule for DST: – clocks would be moved ahead one hour on the last Sunday in April and one hour back on the last Sunday in October.
The schedule was altered several times in the following decades, most recently by the Energy Policy Act of 2005, which set the start of DST (springing forward) at the second Sunday in March and the ending of DST (fall back) on the first Sunday in November.
In general, most states have about 7.5 months of daylight saving time and 4.5 of standard time.