Daylight Saving Time – DST
Daylight Saving Time (DST) is a way of making better use of the natural daylight by setting your clock forward one hour during the summer months, and back again in the fall.
Spring forward – Fall back©thinkstockphotos.com
Clocks back or forward?
To remember which way to set your watch, keep in mind “spring forward, fall back”. You set your clock forward in the spring when DST starts (= lose one hour), and back one hour when DST ends in the fall (= regain one hour).
USA, Central America, Canada, Europe, Asia, northern Africa
Many countries in the Northern Hemisphere (north of the equator) observe DST, but not all. Daylight saving time is in use between March and April and ends between September and November as the countries return to Standard Time.
Australia, New Zealand, South America, southern Africa
In the Southern Hemisphere (south of the equator) the participating countries start DST between September and November and ends between March and April. Standard time begins in the southern hemisphere between March–April and ends between September–November.
Why use DST at all?
Many countries use DST to make better use of the natural daylight in the evenings, and many don't. The difference in light is most noticable in the areas close to the Poles, i.e. furthest away from the Earth's equator.
Some studies show that DST could lead to fewer road accidents and injuries by supplying more daylight during the hours more people use the roads. Other studies claim that people's health might suffer due to DST changes.
DST is also used to reduce the amount of energy needed for artificial lighting during the evening hours. However,many studies disagree about DST's energy savings and while some studies show a positive outcome, others do not.
DST first used in Germany
US inventor and politician Benjamin Franklin first proposed the concept of DST in 1784, but modern Daylight Saving Time first saw the light of day, in 1895 when an entomologist from New Zealand, George Vernon Hudson, presented a proposal for a two-hour daylight saving shift. However,
Germany was the first country to implement DST on April 30, 1916 when the clocks were set forward at 11 pm (23:00).