Why America Still Changes Clocks for Daylight Saving Time
In most of the United States, except for Hawaii and Arizona, clocks are set back one hour on Sunday, November 2, marking the end of daylight saving time. This annual tradition, known as "falling back," usually happens before bedtime on the preceding Saturday.
Seasonal Changes in Daylight
Since the Summer Solstice, the amount of daylight has gradually decreased. By November 2, the sun sets in San Diego as early as 4:56 p.m., according to the National Oceanic and Atmospheric Administration (NOAA). Sunrise on that day will be at 6:07 a.m.
Continuing Shorter Days
The daylight continues to shrink, with the sun setting even earlier on Thanksgiving Day, November 27, at 4:43 p.m. By the Winter Solstice on December 21, the shortest day of the year, the sun will set at approximately 4:47 p.m.
"Daylight saving time is coming to an end!"
The decreasing daylight hours correspond with the onset of darker days for those living in the northern hemisphere.
Additional Notes
- Setting clocks back gives an extra hour of morning light.
- The tradition influences many aspects of daily life and schedules.
- Sunlight hours remain shortest around the Winter Solstice.
Summary
Daylight saving time continues in most U.S. states to adjust daylight hours seasonally, with clocks moving back in early November to better align waking hours with daylight during shorter winter days.
Author's summary: The twice-yearly clock change persists in most of the U.S. to align daylight with waking hours, as winter brings increasingly shorter days and longer nights.
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