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domingo, 26 de outubro de 2014

Daylight Saving Time

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.

It was first introduced by US inventor Benjamin Franklin in 1784. In his essay “An Economical Project for Diminishing the Cost of Light” he proposed to economize the use of candles by getting people out of bed earlier in the morning to make use of the morning sunlight.

Germany was the first country to implement DST. Clocks there were first turned forward at 11:00 p.m. (23:00) on April 30, 1916.

Northern hemisphere summer
Southern hemisphere summer

Never used DST
Used DST in the past

DST is now in use in over 70 countries worldwide and affects over a billion people every year. The beginning and end dates vary from one country to another. 

The European Union adopted the “Summer Time” period that was used in the United Kingdom for many years, where DST begins on the last Sunday in March and ends on the last Sunday in October.

Sunday, October 26, 2 am

TIME explains Daylight Saving Time

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