Definition:Daylight saving time
daylight saving time
- An adjustment of the official time during summer to cause events to be scheduled during daylight hours.
- 2005: answers.firstgov.gov -- Daylight Saving Time is a change in the standard time of each time zone. ... The American law by which we turn our clock forward in the spring and back in the fall is known as the Uniform Time Act of 1966. The law does not require that anyone observe Daylight Saving Time; all the law requires is that if we are going to observe Daylight Saving Time, it must be done uniformly. 
- summer time UK
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