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U.S. Daylight Saving Time Schedule
Daylight Saving Time is observed in the
U.S. beginning at 2 a.m. on the second
Sunday in March, and ends at 2 a.m. on
the first Sunday in November.
Barring any further modifications to DST,
the following are the dates Daylight Saving
Time will be in effect in the United States:
2012: March 11 - November 4
2013: March 10 - November 3
2014: March 9 - November 2
2015: March 8 - November 1
2016: March 13 - November 6
2017: March 12 - November 5
2018: March 11 - November 4
2019: March 10 - November 3
2020: March 8 - November 1
2021: March 14 - November 7
2022: March 13 - November 6
2023: March 12 - November 5
2024: March 10 - November 3
2025: March 9 - November 2
2026: March 8 - November 1
2027: March 14 - November 7
2028: March 12 - November 5
2029: March 11 - November 4
2030: March 10 - November 3
Daylight Saving Time in the United States
Setting your clock ahead one hour of standard
time provides more daylight at the end of the
day during late spring, summer, and early fall.
Daylight Saving Time provides more accessible
daylight hours for those working outdoors, such
as farmers, as well as a safer commute home for
Until recently, Daylight Saving Time in the United
States had been observed from the first Sunday in
April to the last Sunday in October. In 2007, a
new U.S. Federal law went into effect and it was
henceforth observed from the second Sunday in
March to the first Sunday in November, adding
about a month to Daylight Saving Time.
Most areas in Arizona, Hawaii and the U.S. territories
of Puerto Rico, Virgin Islands, Guam, and American
Samoa, do not observe DST, but instead stay on
"standard time" all year long. Indiana was another
state that was only partially on DST until 2006.
The rule to remember when setting your clocks is,
spring forward one hour in the spring, and fall
back one hour in autumn.
NOTE: A number of sources incorrectly refer to it
as "Daylight Savings Time." It is properly referred to as Daylight
Saving (singular) Time, not Daylight Savings (plural) Time.
Daylight Saving Time Equals Energy Savings?
Energy savings was one of the most prominent
advantages the experts used to argue in favor
for implementing, and later, expanding the use
of Daylight Saving Time in the United States.
The contention was that moving our clocks ahead
one hour, would cut the amount of electricity
we consume each day by reducing the need for
electrical lighting by one hour each evening.
Studies conducted in the 1970s by the U.S.
Department of Transportation concluded that we
reduce the entire country's electrical usage by
about one percent each day during Daylight Saving
Time. California Energy Commission studies later
confirmed a savings of about one percent per day.
Experts also argued that Daylight Saving Time
saves lives and prevents traffic injuries by
allowing more people to travel home from work
and school in daylight, which is much safer than
darkness. The U.S. Department of Transportation
estimated that 50 lives were saved and about 2,000
injuries were prevented in March and April of the
study years. The department also estimated that
$28 million was saved in traffic accident costs.
Another contention was that Daylight Saving Time
prevents crime. Because people get home from work
and school and complete more errands and chores
in daylight, Daylight Saving Time would seem to
reduce people's exposure to various crimes, which
are more common in darkness than in light.
A more recent in-depth University of California
study contradicted the earlier findings and
showed that Daylight Saving Time actually raises
utility bills. The USC study concluded that
Americans were each spending $3.19 more per
year as a result of Daylight Saving Time. This
seemingly minuscule increase adds up to hundreds
of millions of dollars in additional energy usage
in America each year. Likewise, earlier claims of
safety and crime prevention under DST have now
The USC study revealed that the amount of
electricity used to power light bulbs did
indeed drop when DST was observed. But it also
established that overall electrical usage
increased as a result of additional use
of air-conditioning because more people were
home on hot afternoons when they would have
otherwise still been at work. The additional
hour of darkness on cool mornings also caused an
increase in the use of heaters.
The USC study was not the first to question the
claim of energy savings under Daylight Saving Time.
Back in the 1970s, the National Bureau of Standards
concluded that there was no significant energy
savings when DST was observed.
Additional study of the issue is obviously
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This page was last updated January 1, 2012. |