Daylight Saving Time (DST) involves setting clocks forward or back by one hour twice a year. Benjamin Franklin first proposed DST in 1784 to save candles. DST was formally introduced to the US in 1918 and during World War II, FDR kept DST year-round for three years. In 2007, DST was extended by one month under George W. Bush. Opinions are mixed on whether the extension was worthwhile. The future of DST may continue to change periodically.

1. Daylight
TIME
a HISTORICAL &
PRACTICAL GUIDE
min
(US) DST TIME
ut
fall
back
ack
es B
(US) DST TIME
set 60
ute
spring
Forward
ead
s ah
set 60
min
SAVING
BEGINS:
ENDS:
2:00 a.m.
on Sunday
November
2nd, 2014
2:00 a.m.
on Sunday
March 9th,
2014
THEmispronounced as
TERM
is commonly
SAVINGs TIME
(but there is no "s" at the end of saving).
Benjamin Franklin
first suggested Daylight Saving Time in
1784 as a way to economize the use of
candles by rising earlier to make use of
the extra sunlight.
SAMOA
hawaii
GUAM
ARIZONA
USA
Puerto
rico
observe DST
don’t observe DST
(due to sunny weather)
virgin islands
1
DST was formally introduced
to the United States in 1918.
942 - 1 945
fdr
After Pearl Harbor, FDR instituted year round
DST for three years. US time zones were aptly
named "War Time." Once Japan surrendered
in 1945, the time zones were relabeled
"Peace Time."
65 %
of the year 1
2
3
4
5
6
7
8
9
10
11
12
AS of 2007
The rules for DST changed for the first time
in 20 years. George W. Bush extended the
length of DST by about one month, leaving
it in effect 238 days out of the year.
BUT IS IT HELPING?
The extension of DST had little or
no effect on energy in California.
Many individuals still found that the
extra daylight gave them the
chance to have more fun after a
long day at work or school.
4o%
47%
not Worth it
WORTH IT
0:30
1:00
2:00
DIFFERENCES
DST is almost always one hour ahead, but history has seen several variants of this,
such as the 30 minute “half-adjustment” and the two hour "double adjustment."
the future
Given its varied past, there is no telling what
will happen with DST in the future. It will likely
continue to change from time to time due to
special events or conditions.
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REferences:
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www.timeanddate.com / DST / 2014
www.webexhibits.org / Daylight Savings
www.news.nationalgeographic.com / When does daylight Saving Time End / 2013
http://www.nist.gov / Current Rules / 2014
http://www.rasmussenreports.com / Think there’s Still a Need for DST? / 2013