Daylight Saving Time (DST), the practice of moving clocks ahead one hour in the summer months and returning them back an hour in the winter, was first implemented by Germany during World War I, as a way to conserve electricity.
The idea, however, dates back to William Willett, an Englishman who campaigned for “summer time” in the early 1900s so that people would have more time to be out in the sunlight – though the British government was not interested.
