1918
Library of Congress
Daylight Saving Time (DST) originated from an idea proposed by George Vernon Hudson, a New Zealand entomologist, in 1895. Hudson's proposal aimed to make better use of daylight by shifting the clocks forward in the summer months. However, it was not until World War I that DST was widely adopted, initially by Germany and its allies in 1916, to conserve coal by reducing the need for artificial lighting in the evening hours. This practice quickly spread to other countries, including the United Kingdom and the United States, as a way to save energy during the war effort. The concept behind DST was to make better use of daylight during the evenings, thereby saving on energy consumption.
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